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Simple, straightforward and low shipping rates for these Hudson automatic watering valves.


Compact Float Valve for Livestock, Ponds and Tanks

Great for Cows, Sheep, Horses, Poultry, Koi ponds or even a Single Pet

The unique design of this compact valve makes it especially well suited for animal watering applications, such as: Alpacas, goats, turkeys, pigs, chickens, dogs and cats. It can also be used in many other ways, like: aquariums, fountains, holding tanks, ponds, irrigation systems, swimming pools, landscaping and other commercial, industrial and residential applications. These damage-resistant valves ensure worry-free operation in many types of uses. Inexpensive and self-contained, these valves are easy to install and will provide years of trouble-free service.


Additional usage options:
  • Zoos
  • Kennels
  • SPCA facilities
  • 4H clubs
  • Animal Shelters
  • Livestock Auctions
  • Stock yards
  • Fairs
  • Ranches
  • Dog parks
  • Pet enclosures
  • Backyards
image of the livestock watering valve
close-up of a valve
image of the livestock watering valve in use
valve in use

Ultra-Compact Watering Valve
image of the half inch livestock watering float valve
1/2" Valve
click here for larger image
image of the one inch livestock watering float valve
1" Valve
click here for larger image
These amazing water valves feature:
  • No lever arm
  • No exterior moving parts
  • Ultra-Compact - 1/2" valve is only 2-13/16" in diameter, 1" valve is only 3-1/2" in diameter. Both are only 5" tall
  • Resistant to freezing (1" valve only)
  • No float ball
  • Installs in minutes
  • High volume - 1" flow rate is 60 gpm at 40 psi, 1/2" is 18 gpm at 40 psi
  • Anti-siphon, when water outlet of the valve is at least 1" above the overflow level of the trough, pond, tank, etc..
  • Rust-proof
  • Can be used in aquariums, fountains, holding tanks, ponds, irrigation systems, swimming pools, landscaping, and many other applications
  • Standard temperature units can handle water up to 90°F and high temperature units can handle water up to 150°F
This compact water level control valve, with its new and innovative design, will solve your fresh water control problems once and for all. This small, virtually indestructible valve is well adapted to a wide variety of applications, from personal home use to large-scale industrial use. This valve is ideal for any application where it is necessary to control the level of fresh water. The unique compact design has caught the attention of people in every type of industry where water control is necessary. The patented design of the Hudson Valve uses water pressure as the primary force to close the valve, as opposed to a lever arm and float ball. The compact, self-contained design greatly enhances the valve's reliability. The valve body is made of durable glass-filled nylon. Internal parts are of ABS plastic, silicone, and stainless steel. When properly installed, the valve will meet anti-siphon requirements.

This float valve will turn the water off at 1-1/2" to 2" above the bottom of the valve depending on the pressure of the water in the trough, tank, pond, etc. The pressure of the water flowing upward forces the float to rise and shut off the water flow.

Description Price & Quantity
1/2" Small to Medium Application Watering Valve - Standard Temp
Great for dogs, cats, sheep, chickens, goats and other small animals or water tanks not requiring high volumes of water. - view dimensions
$29.86
1/2" High Temp Compact Watering Valve
Used for light to medium flow industrial and commercial applications when water temperatures up to 150°F are required. - view dimensions
$32.88
1" Medium to Large Watering Valve - Standard Temp
Perfect for cows, horses, pigs and other large animals as well as large populated animal enclosures or large storage tanks requiring large volumes of water quickly. - view dimensions
$29.87
1" High Temp Compact Watering Valve
Used for medium to high flow industrial and commercial applications when water temperatures up to 150°F are required. - view dimensions
$32.89
1/2" Valve Mounting Bracket BB03-S $20.93
1" Valve Mounting Bracket BB03 $20.97

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Watering Valve Repair Kits and Parts
image of the half inch livestock watering valve repair kit
1/2" Valve Repair Kit
view parts breakdown
image of the one inch livestock watering valve repair kit
1" Valve Repair Kit
view parts breakdown

These repair kits include the control diaphragm; the diaphragm stem, strainer, and retainer ring; the float; the shut-off pad; the screen.


Model # Description Price & Quantity
K4-S 1/2" Valve Repair Kit $16.77
K4-HTS 1/2" High-Temp Valve Repair Kit $19.19
K4 1" Valve Repair Kit $16.62
K4-HT 1" High-Temp Valve Repair Kit $19.75
P01-S 1/2" Valve Cap $18.07
P01 1" Valve Cap $12.76
P02 Continuous Flow Disc for freeze resistance - 1" valve only $2.20

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Click on the links below to view related items & accessories:
image of the brass spring check valvesBrass Spring Check Valves image of the brass foot valveBrass Foot Valves image of the sharkbite fittingsSharkbite® Fittings image of the brass nipplesBrass Nipples


Frequently Asked Questions

Question about how the hudson valve operates"How does the valve work?"
Answer about how the hudson valve operates The valve operates using a float and a control diaphragm chamber. When hooked up to a water source the valve will allow water to flow through it until the water reaches the bottom of the valve. As the water level rises it causes the float inside of the valve to rise allowing the diaphragm chamber to fill and close the valve.

Question about the pressure range the hudson valve operates in"What is the minimum pressure needed to operate this valve as well as the maximum pressure?"
Answer about the pressure range the hudson valve operates in Both the 1/2" and 1" valves have a minimum operating pressure of 8 psi, the 1/2" valve has a maximum operating pressure of 65 psi and the 1" valve is 100 psi maximum. These pressure ranges are the same for the standard temperature and the high temperature valves.

Question about the hudson valve freeze resistance"You state 'resistant to freezing' what does that mean? Can this float valve withstand 20 degree temperatures?"
Answer about the hudson valve freeze resistance You would need to install the "continuous flow disc" during the winter months when freezing may occur. When installed it will allow a constant trickle of water to flow, this constant flow of water helps to prevent pipes from freezing. This will cause your reservoir to overflow, you will need to address this and provide a way to drain the excess water. However this method will not be very effective during very low temperatures or long periods of below freezing temperatures. You should not use this valve as your only method of protection against frozen pipes.

Question about minimum tank depth the hudson valve can be used in"What is the minimum depth this valve requires to operate? How shallow can the water bowl be?"
Answer about minimum tank depth the hudson valve can be used in This valve stops the flow of water between 1-1/2" and 2" from the bottom of the valve, depending on your water pressure. It could conceivably work in a 3" deep bowl, we suggest a 4" deep bowl as a minimum.

Question about using the hudson valve for a 4-H project"My child just started 4-H, would this be a good valve to use for their lamb raising project?"
Answer about using the hudson valve for a 4-H project Yes, the compact size and lack of exposed moving parts makes this valve ideal for these types of projects. This valve is designed to be animal friendly and will work in a small watering pail that is secured from being tipped over.

Question about if the hudson valve can be used with liquids other than water"Will my valve work in liquids other than water?"
Answer to if the hudson valve can be used with liquids other than water The Hudson Valve is designed to be used in fresh water only. Please note these valves will not be covered under warranty if any liquid other than fresh water is used as it's source. All warranties are covered by the manufacturer.



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