Model U407
Angle-pattern check valve installed where the suction line meets the top of an underground fuel storage tank. Holds the prime in the line when the dispenser pump stops and prevents product draining back to the tank.
Prices on request. Contact us for availability and quotations.
A suction-fed dispenser lifts fuel out of a buried tank. If the column of fuel in the suction line is allowed to drain back to the tank each time the pump stops, the pump must re-prime on every delivery — slow at best, and on a long line it will not prime at all. The angle check valve is the non-return valve that holds that column in place.
It is fitted at the top of the storage tank where the suction line turns, hence the 90° body: one port takes the drop pipe into the tank, the other the line to the dispenser. Flow lifts the poppet off its seat; reverse flow and the weight of the standing column seat it again.
The U407 has a cast steel body with a nickel plated surface and a Viton cased oil seal, and is listed for diesel, gasoline, ethanol and similar fuels. The manufacturer recommends it for suction lines where the pressure does not exceed 34 ft of head — about 10.4 m, or roughly 15 psi (1.0 bar). It is not a pressure-line valve.
When ordering, state the port size and thread form and the fuel. Note that a check valve at the tank top does not replace the foot valve at the bottom of the suction tube or the emergency shut-off valve under the dispenser; the three do different jobs and a suction installation normally carries all three.
| Model Designation | U407 |
|---|---|
| Pattern | Angle (90°) body check valve |
| Body | Cast steel, nickel plated |
| Seal | Viton (FKM) cased oil seal |
| Maximum Suction Head | Recommended for suction lines where the pressure does not exceed 34 ft of head (approx. 10.4 m, roughly 15 psi / 1.0 bar) |
| Media | Diesel, gasoline, ethanol and similar fuels |
| Installation | Between the fuel line and the top of the fuel storage tank |
