12 best hudson backpack sprayers

Product description

The Hudson Pro Neverpump Bak-Pak Sprayer features a large tank opening for easy filling, a removable/rechargeable lithium-ion battery, branded cushioned straps with adjustable pads, a large comfortable shut-off valve with lock on for continuous spraying, and a fiberglass wand with heavy duty nozzle system.

• High performance rechargeable and removable lithium-ion battery powered sprayer
• Heavy-duty nozzle system including stream, dual mist, fan and shower
• Large comfortable shut-off valve that locks on for continuous spraying
• Cushioned ergonomic straps with adjustable pads for added comfort
• Large 6-inch tank opening for easy filling

User questions & answers

Question:	Can this be used to spray bleach on the roof prior to using power washer? how high can it spray the stream? how long is the hose attached to the wand
Answer:	It will spray anything, it your on the roof, but don’t know if it will spray from the ground. Highly recommend this product!
Question:	Can i use this for acid
Answer:	This sprayer won't hold up to the use of acid.
Question:	Where is this product made
Answer:	Just says H.D Hudson Manufacturing, Lowell, MI. According to the user guide, you could email ladybug at hdhudson dot com and ask.
Question:	Does it come with a battery charger
Answer:	This does come with a battery charger.

Product features

Lithium-Ion Battery

High performance removable and rechargeable lithium-ion battery included for easy charging

Comfortable Shut-Off Valve

Large valve locks on for continuous spraying

6-Inch Tank Opening

Large opening allows for easy filling and includes a removable filter to keep dirt and debris out of tank

Cushioned Straps

Ergonomic straps feature adjustable pads for added comfort and offer even weight distribution

Product description

The Bare Ground 4-gal Backpack Sprayer features multiple nozzle adapters and can be used for multiple purposes. It comes with shoulder straps and an On/Off switch that can be locked into place for continuous spraying. In addition to being a great way to apply Bare Ground liquid this all-season sprayer is great for various jobs and features a side-arm pressurizing lever that can be positioned to best suit user preferences.

• Extra large fill opening prevents spills when adding chemical
• 48” PVC power sprayer-style hose
• Locking large poly control valve – comfortable, thumb operated
• Extra long 20” fiberglass/poly spray wand
• Bonus nozzle system with 4 different spray settings
• Powerful piston pump
• Left or right handed pumping action

User questions & answers

Question:	What type of batteries does it use
Answer:	I have used it a few times. The quality is good it was a little hard to put together. There was quite a few peices that I didn't expect to have to assemble. I hope you find this helpful
Question:	Can I use this to apply oil based deck and fence stain
Answer:	You have to pump it.
Question:	Can used bleach
Answer:	Please contact Oregon Technical Services at 1-800-223-5168 option #1 for information regarding replacement parts for your backpack sprayer
Question:	can i reach web worm nests 30' up in a tree
Answer:	This is a pump sprayer

Product features

Padded Backpack Sprayer Straps

Chemical-resistant straps with adjustable pads for added comfort and support.

4 Nozzle System

Includes cone, stream, dual cone, and fan.

Premium Shut-Off

Large, comfortable shut-off valve has a lock-on feature for continuous spray.

Wide Mouth Opening

Extra large fill opening prevents spills when adding chemicals.

Product description

State-of-the-art pump outperforms the competition with exceptional leak protection. Translucent 4 gallon poly tank to easily see liquid level. Equipped with Viton Seals. 70 psi Sealed Diaphragm Style Pump. 20" brass wand with adjustable brass cone pattern nozzle. Includes three plastic flat fan nozzles. Locking shut-off valve with in-line filter. 47" industrial spray hose. Solid steel pump handle. 1 Year Warranty.

• Translucent 4 gallon poly tank to easily see liquid level
• Equipped with Viton Seals
• 70 PSI sealed diaphragm style pump
• 20” brass wand with adjustable brass cone pattern nozzle
• Includes three plastic flat fan nozzles
• Locking shut-off valve with in-line filter
• 47” industrial spray hose

User questions & answers

Question:	Where is this sprayer made
Answer:	I'm a 38B and the 38B fit me fine, so I'd order your usual size if I were you.
Question:	Is there a user guide
Answer:	Lightly padded... Very comfortable
Question:	How many gallons are in an sp1 sprayer
Answer:	No padding. Will show nipples!
Question:	Is the hd hudson hudson 97154 sp1 pump sprayer safe for chlorine
Answer:	The pilling isn't always from washing. It also comes from your outer clothing rubbing against the bra as well. You might not be able to prevent it.

Product description

SP0 triple function bak-pak sprayer. Combines pressure & safety with exclusive jet agitation. Translucent 4 gallon poly tank to easily see liquid level. Equipped with Viton seals. Jet agitation for wettable powders triple function pump. 20" brass wand with adjustable brass cone pattern nozzle. Includes three plastic flat fan nozzles. Locking shut-off valve with in-line filter. 47" industrial spray hose. 1 year warranty.

• Translucent 4 gallon poly tank to easily see liquid level, Equipped with Viton seals
• Jet agitation for wettable powders, Triple function pump
• 20” brass wand with adjustable brass cone pattern nozzle
• Includes three plastic flat fan nozzles, Locking shut-off valve with in-line filter
• 47” industrial spray hose, 1 year warranty

User questions & answers

Question:	Does this come with different nozzles? I am interested in the flat spray nozzles
Answer:	The cup is supported with a foam form, but it is not removable, through a side slit, and doesn’t move around like some foam liners, which is why I love this bra!
Question:	Can i spray a 50/50 water vinegar mix with this sprayer? Is there a detailed parts image and parts list available
Answer:	I wear a 36 C in traditional bra sizes and a medium was perfect for me.
Question:	Can I buy shoulder straps for this sprayer here
Answer:	I believe they are marked S M L - no specific chest measurement or cup size needed. I usually wear a 36C and a Medium was just right.
Question:	Are spare parts available for the sprayer
Answer:	I wouldnt call it padding so much as "fully lined"..the cups are pretty comfy, but the spacing is a little "off" (too far apart??)

Product features

Adjustable Shoulder Straps

Features adjustable, padded shoulder straps for portability and comfort.

Adjustable Poly Cone Nozzle

Includes 3 plastic flat fan nozzles

Wide Opening

Features a wide mouth opening with filter

Product description

SP2 Piston Pump Bak-Pak Sprayer. Revolutionary sealed pump delivers highest pressure anywhere! Translucent 4 gallon poly tank to easily see liquid level. Equipped with Viton Seals. 180 psi sealed piston pump; also safe for chlorine. 20" brass wand with adjustable brass cone pattern nozzle. Includes three plastic flat fan nozzles. Locking shut-off valve with in-line filter. 47" industrial spray hose. Solid steel pump handle. 1 Year Warranty.

• 180 psi sealed piston pump; also safe for chlorine
• Translucent 4 gallon poly tank to easily see liquid level
• Equipped with Viton Seals and Solid steel pump handle
• 20" brass wand with adjustable brass cone pattern nozzle
• Includes three plastic flat fan nozzles
• Locking shut-off valve with in-line filter, 47" industrial spray hose
• 1 year warranty

User questions & answers

Question:	How high will it spray
Answer:	It works for me and I have unequal breasts due to one having an implant s/p mastectomy. It’s a very comfortable bra
Question:	Has anyone else had to replace the plastic pump arm on the SP2 mine broke after the first use tom
Answer:	Yes it is a fantastic BRA the best I HAVE ever owned I am 73,120lbs and wear a38D Looks Great!!!
Question:	Where might I find parts for the sp2. I have some rotted rubber parts even after rinsing it out after I used it
Answer:	as long as you didn't wear it and the tags are still on.
Question:	Can it be switched right hand pump
Answer:	Im a 30/32dd/e (meaning im usually right in the middle of these sizes but have bounced between them as well) and the small is the right band fit with enough stretch in the cups im not spilling over, honeslty it feels like im wearing nothing its so lightweight and soft and the support it gives offers a lovely bonus view for your significant other while youre just being comfy, im getting more colors

Product features

Adjustable Shoulder Straps

Features adjustable, padded shoulder straps for portability and comfort.

Adjustable Poly Cone Nozzle

Includes 3 plastic flat fan nozzles

Wide Opening

Features a wide mouth opening with filter

Product description

NeverPump Battery operated Bak-Pak sprayer. No need to recharge while on the job site, up to ten hours (600 minutes) of spray time means enough power to completely drain the 4 gallon tank several times over with no down time or hassle to recharge the battery. The battery included with the NeverPump will not slowly degrade its power source and it consistently brings 600 minutes at full 60 psi strength with each charge. Extra large fill opening prevents spills when adding liquid to the 4 gallon tank. The tough, poly tank is translucent, making it easy to see liquid level inside. Includes AC charger that completely charges battery in 9 hours. 1 year warranty

Nozzles Included with Sprayer:

1. Cone nozzle sprays on target to reduce waste.

2. Long-reach adjustable shower nozzle for spraying a fine mist to high places or drenching to penetrate gravel, bark, or thick weed patches with a herbicide.

3. Dual cone nozzle for quicker coverage of larger areas. Delivers a fine particle with a wide spray pattern to create a “fog”. For insect control and to get complete plant coverage above and below the plant canopy, this is the nozzle assembly of choice.

4. Fan nozzle for spraying flat surfaces. Perfect for spraying rows, cracks and crevices with less drift.

From the Manufacturer

For home, lawn and garden rely on Hudson sprayers to protect against insects, weeds and plant diseases. We also make life easier with sprayers for wood deck maintenance, removing wallpaper, mildew control, and many other applications. Concrete contractors, janitorial and sanitation maintenance workers and pest control operators turn to Hudson Professional division sprayers and accessories.

• Sprays for 10 hours (600 Minutes) on a single battery charge. Includes AC charger that completely charges battery in 9 hours
• Tough, translucent, poly tank with Easy-Fill Opening
• Extra long 20 inch fiberglass/poly spray wand with curved tip for on-target spraying
• 72 inch, non-kinking hose for easy reach
• Large 4” tank opening allows for easy filling and features a screen filter to keep dirt/debris out of tank
• Large poly on-off valve - comfortable thumb-operated
• Bonus nozzle system with 4 different spray settings. Cone, Long-Reach, Dual cone & Fan

User questions & answers

Question:	how far will Hudson Never Pump spray
Answer:	The three patterns are: Bubbler like your kitchen faucet that adds air to the stream, Shower and a three stream close pattern water blast.
Question:	where can I get a replacement pump? went bad after 1 summer
Answer:	The plastic adapter at the base is a quick-connect fitting. This works well, doesn't leak, and releases the main assembly easily. The quick-connect fitting is fully compatible with other Gardena nozzles, but I am unsure about other devices.
Question:	Can it spray oil based wood stain
Answer:	Hose diameter isn't an issue, the size of the fitting is what matters and they are the same for 1/2 or 5/8 hoses. Great sprayer, just don't let it freeze with water in in.
Question:	Can I water plants with it
Answer:	It can, general rule of thumb is the product should be good 1-2 years from time of purchase. DEPENDING on how much organic matter is in a product. That one is derived from organic sources. Also store in a cool dry and we like dark places.

Product features

4 Nozzle System

Includes cone, stream, dual cone, and fan.

Wide Mouth Opening

Large 4 in. tank opening with filter allows for easy filling and keeping dirt/debris out of tank.

Premium Shut-Off

Large, comfortable shut-off valve has a lock-on feature for continuous spraying.

Padded Backpack Sprayer Straps

Adjustable padded shoulder straps offer added comfort and support.

Product description

For home, lawn and garden rely on Hudson sprayers to protect against insects, weeds and plant diseases. We also make life easier with sprayers for wood deck maintenance, removing wallpaper, mildew control, and many other applications. Concrete contractors, janitorial and sanitation maintenance workers and pest control operators turn to Hudson Professional division sprayers and accessories. Gasoline powered Bak-Pak 3.75 gallon Duster and Mist Blower. Commercial/professional grade features: Large 2.4 HP engine. Large mouth fill opening prevents spills. Translucent tank. Portable, high-efficiency dispersion for granular fertilizers and pest control applications. Includes quick-adjustable padded shoulder straps. Padded backrest for maximum operator comfort. Easily changes from duster to mist blower with two interchangeable tank inserts. 1 Year warranty

• Portable, flexible and high efficiency Bak-Pak duster and mist blower
• Large 2.4 HP engine
• Large mouth fill opening prevents spills
• Easily changes from duster to mist blower with two interchangeable tank inserts
• Easy dispersion for granular fertilizers and pest control applications
• Complete with quick adjustable padded shoulder straps and padded backrest for maximum operator comfort
• Non-CARB Compliant/Not For Sale In California

User questions & answers

Question:	will this blower fit into a check on luggage
Answer:	Yes
Question:	Hi. anyone have problems with the pulley start-wheel spring system? mine crapped out after a few uses. anyone know how i can get spare parts?. thanks
Answer:	I assume at least 3. The large has 3 rows.
Question:	what is in the bottle.that goes with it
Answer:	No. Not enough padding.
Question:	Can this be also used as a leaf blower
Answer:	3x is 22W*24W 46 inches - 48 inches

Product description

Field King 190328 Professional No Leak Pump Backpack Sprayer does the work of a piston or diaphragm backpack sprayer. The exclusive internal No Leak Pump keeps your back and clothing dry. The paddles keep liquids, powders, and water-soluble solutions mixed, in solution, and ready to spray. Also the pump features Viton seals that can be easily changed within minutes without tools (up to 7x faster than the leading competitor). The premium shut-off offers a comfort grip, lockable trigger to prevent hand fatigue, and a removable in-line filter to reduce clogging. The Field King 190328 Backpack Sprayer is capable of spraying up to 150 PSI - perfect for those hard-to-reach areas. The included pressure regulator maintains a low, continuous 25 PSI (great for spraying herbicides and weed killers). The tank has a built-in carry handle with wand storage. With adjustable padded straps, waist belt and chest cinch strap, the backpack ensures comfort while you work. Multiple nozzles are included for ultimate versatility: brass adjustable nozzle (enables stream to cone patterns), wide flat fan nozzle (red, 0.25 GPM, angled at 70°), narrow flat fan nozzle (yellow, 0.15 GPM, angled at 30°), and foaming nozzle. Also accepts TeeJet nozzles.

• Internal No Leak Pump design is safer to use chemicals will not drip down your back. Internal piston pump delivers up to 150 PSI
• Durable, 21 inch poly wand with the highest quality Viton seals can be used with Wet table powders and liquids for all applications does the work of both a piston and diaphragm backpack
• Premium, lockable shut off with brass components and an in-line filter.
• Easy access pump allows changing of seals in just minutes with no tools
• 4 nozzles included: brass adjustable, 2 flat fans, and foaming nozzle. Also accepts Tee Jet nozzles.

User questions & answers

Question:	what is the difference bet 190328 and
Answer:	The 190328 Field King backpack has adjustable padded shoulder straps and durable poly wand; whereas, the 190348 Field King Max backpack has a deluxe padded harness with a full back pad, wide support waist belt and chest cinch strap. It also features a 21" poly-lined stainless steel wand and foldable pump handle making it easier to transport and store. They both have the internal No Leak pump, Viton seals, lockable shut-off with removable filter, and 4 nozzles. Please let us know if you have any other questions. You can also call us at 1-800-311-9903. Thank you for your interest in our products.
Question:	will it work for Organic fertilizers? Using Fertilizers that have some tiny solids
Answer:	I haven't used it for organic fertilizers but as long as the solids are soluble in water, it should work. If they are not soluble, they will likely clog up the spray head.
Question:	Has anyone had any experience with using this sprayer for a stain or oil based product for spraying/staining a split rail fence
Answer:	use a $20.00 plastic cheaPO 1 gallon pump spray worth it for large deck saves serious time ive done this 5 plus times solvents and stayin etc usually ruin pump in hours make sure finish same day b/c next day pump might be junk
Question:	How many gallons does it hold
Answer:	The tank holds 4 gallons when full; it has graduated markings of 1, 2, and 3 gallons also. When full, it weighs 50 pounds. The back pack makes it feel like less than that once you have it on your back. This is most easily done if you set it on a bench top or table top, and then "slip" into the harness.

Product features

Internal Paddles

Built-in agitator can handle liquids, powders, and water-soluble solutions. Internal paddles, activated by pump action, keeps them mixed, in solution, and ready to spray.

Tested to over 1,000,000 cycles with a wettable powder without failure.

Internal Pressure Chamber

Allows pressure to reach 150 PSI - 65% higher than other diaphragm pump backpacks. Spray hard-to-reach areas and create more precise spray patterns.

Repair in Minutes - No Tools!

Patented pump design has minimal high-wear parts (60% less) and can be repaired in minutes without tools. Less down time!

Superior Shut-Off

Internal components made of durable brass components.

Viton Seals and Gaskets

The highest quality Viton seals throughout for maximum chemical resistance.

4 Nozzle System

Includes an adjustable brass nozzle, 2 flat fans nozzles, and our patented foaming nozzle. Also accepts TeeJet nozzles.

Filtration Basket

Large tank opening with filtration basket keeps large debris out of tank while filling.

Pump Handle

Handle can be reversed for left-or right-handed use.

One Way Valve

Prevents spills if tank is inverted.

Threaded Bolt

For secure handle attachment with no slack (far superior to a typical cotter pin found in competing products).

Wand Storage

Integrated carry handle and wand storage.

• Backpack Sprayer Replacement Straps---this is just a shoulder harness for backpack sprayers, it has two attaching loop at the top left and right of the tank, and the lower has hooks that attach to the lower guard frame
• Backpack Sprayer Shoulder Straps take the strain off your shoulders and back. A great addition to the sprayer and a real back saver!
• Backpack Sprayer Replacement Parts---this is a replacement part, makes the backpack sprayer much more stable and comfortable to use
• Backpack Sprayer Harness, shoulder saver harness for backpack sprayers, it is padded and helps you to carry the weight of the sprayer
• SIZE: A, B length 37.8inch/96cm, belt width: 1.3inch/3.3cm. C length 39.37inch/100cm, belt width: 1.46inch/3.7cm

User questions & answers

Question:	Will this work with a birchmeier sprayer
Answer:	two hooks that can connect to three separate sets of eyes.
Question:	Will this work with the Royal Condor sprayer
Answer:	There is a thin padding
Question:	Will they work on a 4 gallon centurion ergonomic garden sprayer
Answer:	No it does not. I have worn this sports bra for years. It has become my favorite. I will say, though, it does not separate like an actual bra but it does no give the unibody look.
Question:	Will it work on solo brand backpack sprayer
Answer:	The size reflects band size - not cup size. The cups are soft, single layer, and won't provide much support for the girls if you are toting D cups or DD cups.

Product description

Solo 28-inch universal wand and shut-off valve assembly. A step up in quality and function with an unbreakable 20-inch wand fitted to our commercial grade shutoff valve, stainless filter screen, plastic adjustable and flat fan nozzle. Adapts to virtually all competitors sprayers. Solo's number 1 packaged accessory. Includes stainless hose clamp.

• Made in the USA
• Genuine Solo replacement parts
• Includes adjustable and flat Fan nozzle for multiple spraying tasks
• Fits most brands

User questions & answers

Question:	will this work on a rl flomaster rgx model
Answer:	I have not measured it but about 16-18 inches. The deal is its bigger than 1 gal. Closer to 2. I bought one for the farm as soon as I used it bought a second one. We also have a solo mist blower. Solo is second to none on sprayers. These are great compared to what you get at super stores.
Question:	will this fit on a chapin sure sprayer model
Answer:	Probably the best you can do is 20-24 inches at 3 ft
Question:	Will this fit a Chapin
Answer:	AD SAYS: 28-Inch unbreakable wand provides extended reach
Question:	Would this fit a Northstar Model 2270 26 gal sprayer
Answer:	Different spray patterns

Product features

28" Universal Wand and Shut-off Valve Assembly

A step up in quality and function with an unbreakable, heavy duty 20-inch wand.

Solo’s number 1 selling packaged accessory.

Includes a stainless hose clamp.

Fits most brands of manual backpack and handheld sprayers.

Spray multiple, different patterns: stream, mist, flat fan

AssemblyParts

Packaging

Complete Wand

Product description

This 1.3 gallon, rechargeable lithium-ion powered sprayer will spray approximately 18 gallon of liquid on a single charge. There is no pumping required & The translucent tank allows for easy monitoring of fluid levels. The double telescoping wand extends from 16 to 35" & the nozzle adjusts for multiple spray patterns from a fine mist to a straight stream. This unit also features an easy to use thumb-operated power switch & a convenient, padded shoulder strap for comfort & portability. A rechargeable lithium-ion battery & charger are included.

• Rechargeable lithium-ion Battery powered sprayer
• No pumping required and sprays approximately 18-gallons of liquid on a single charge
• Translucent 1.3-Gallon tank allows for easy monitoring of fluid levels
• Adjustable nozzle – sprays from a fine mist to a straight stream
• Convenient, padded shoulder strap for comfort and portability
• Thumb-operated power switch
• Double telescoping wand, extends from 16 to 35-inches

User questions & answers

Question:	Is there suppose to be a power adapter that comes with the unit. all i got was a usb cable
Answer:	The power adapter is universal. It does not come with the unit.
Question:	Sprayer adjustment- fine mist- how do i get the sprayer i bought to spray a fine mist? it just trickles out in a suedo stream....not useable as is
Answer:	A fine mist is essential if you want to spray leaves (tops and bottoms) evenly without excess dripping. To achieve this you will need about 70 psi (pressure) at the nozzle. These cheap little sprayers don't come close to this achieving this pressure. You'll need to buy a professional sprayer.
Question:	Would this work for insectiside inside your home
Answer:	This sprayer can be used with insecticide. This can be used inside the home per the user's discretion. The spray pattern can be adjusted down to a mist.
Question:	I want to use a mixture of Dawn detergent, vinegar and epsom salt as a weed killer. Will this sprayer be able to handle that mixture or will it clog
Answer:	I would guess it can handle it as long as the mixture is thin (like water) . When finished, you'll need to rinse it VERY well because the detergent turns gummy if left to dry on surfaces. I have no idea what epsom salt will do when it dries. I would rinse the container out twice after wiping the insides down really well on the first rinse. then I would run a couple of (good) water loads through the hose and nozzle. ('Good' water is like city water compared to some well water which has a high mineral count and leaves a residue when it dries. You don't want that in the hose, nozzle or pump!)

Product features

Double Telescoping Wand

Double telescoping wand adds length for those hard to reach places. Wand extends from 16 to 35 inches.

Adjustable Nozzle

Nozzle adjusts from straight stream to fine mist.

Rechargeable Lithium-Ion Battery

Lithium-ion battery allows for an approximate 2 to 3 hour continuous run time, and is removable/rechargeable. No pumping required and sprays approximately 18-gallons of liquid on a single charge.

Wand Holders

Unit contains 2 wand holders (1 on the top and 1 on the side) for storage.

• Never Pump Again: Sprays For 2-2.5 hours on a single battery charge or over 50 gallons of solution so that you can complete your whole job on a single charge without worrying about pumping. 40-65PSI pump with adjustable pressure knob. The 3.3 AH lead-acid battery provides 3X the battery life of most other lithium battery sprayers. If needed, the battery can be changed quickly. Includes a fully-automatic AC charger that completely charges the battery in 6 hours. (Battery and charger included!)
• PetraTools HD3000 1 Year Warranty. PetraTools wants to make sure that you are 100% satisfied with your PetraTools HD3000 Sprayer and will help any way they can. Other sprayers provide extremely limited support on Amazon but not PetraTools. Quality control testing and final assembly on each sprayer completed at PetraTools testing centers right here in the USA!
• PetraTools Multipurpose Wand and Nozzle Included: Meet all your spraying needs with the PetraTools wand that can handle acids/bleaches as needed. Includes plastic squeeze handle with locking mechanism and multiple nozzle attachments for all your spraying needs
• Translucent Tank with Gallon Markings: The translucent tank with gallon markers allows you to easily see how much solution you’re mixing in and how much is left in the tank. Variable PSI pressure adjuster allows you to control your PSI output for the perfect spray. The wide mouth lid design makes pouring and mixing solution convenient.
• New 3-Gallon Design: PetraTools has taken one of the most popular and functional sprayer designs and brought it to you in a 3-gallon version, so that you can get all the same power and functionality with a lighter designed tank, higher quality of production and top-notch customer support just a phone call or email away. That's the PetraTools 'Built. Rock. Solid.' guarantee.

User questions & answers

Question:	Is this sprayer able to handle Xelene
Answer:	Hi! Thanks for the great question, as long as the liquid is the same viscosity as water, it can be used. We highly recommend cleaning the unit between each use.
Question:	What is the length of the wand? Can it be extended
Answer:	The wand appears to use universal size threads, the wand is 18" and appears to extend to 29"
Question:	Shoot range in ft
Answer:	It can shoot about 15-20 ft
Question:	How is the tank drained? Where is the drain located on the unit
Answer:	The tank is drained by flipping the cap