Skip to content

1/2 Inch Tank Mount Float Valves – .312 Oriface




The 1/2″ Tank Mount Float Valve enables users to connect reverse osmosis systems to an open water storage tank. Similar to a float valve seen in a toilet tank, the mechanism works by allowing purified water to flow through the tank, once the top water level is reached the valve shuts off access to prevent overflow. Constructed with heavy-duty non-corrosive PVC with replaceable Santoprene rubber seals. For use with 3″ or 6″ x 1.4″ stainless steel rods and 4″ x 5″ float balls.

  • Flow rate of 8 GPM at 20 PSI and 15 GPM at 60 PSI
  • 1/2″ NPT inlet and outlet
  • 0.312 orifice

In stock

Your Garden's Success is our #1 Priority

HTG Supply is committed to providing you with the very best products, pricing and service in the industry. We will ship your order fast and discreetly packaged to protect your privacy. Buy with confidence knowing your HTG Supply purchase includes simple returns as well as lifetime product support. Call our team of real growing experts with your purchasing or product use questions, and we will be here to help!

See it for less somewhere else? Give us a call and we’ll beat any online competitor’s price!

Customer Service:  1-866-710-GROW (4769) | | Hours: Mon-Fri 9:00 a.m. to 5:00 p.m.


1/2 Inch Tank Mount Float Valves – .312 Oriface

This heavy-duty, non-corrosive, PVC float valve has a .312” orifice size and is tank (bulkhead) mounted with a 1/2″ pipe thread inlet and outlet. For use with 3” or 6” rods and 4”x 5” or 2”x 2”x 4” floats.

  • Construction: NSF-approved PVC, 18-8 stainless steel hardware
  • Seal: Santoprene rubber


Pipe Size – Inlet (in) 1/2 NPT Tank
Pipe Size – Outlet (in) 1/2 NPT
Orifice Size (in) 0.312
Free Discharge Flow Capacity – 20 PSI 8 GPM
Free Discharge Flow Capacity – 60 PSI 15 GPM
Weight 0.01 lbs
Dimensions 4 × 3 × 1.2 in


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.