Water Cooled LFCV


This state-of-the-art application is a modified version of the JASC Liquid Fuel Check Valve that incorporates active cooling of the check valve’s external housing. Because the unit is a drop-in replacement for the liquid fuel check valve, no changes to the fuel lines are necessary.

Water Cooled LFCV

Design Features & Benefits

The cooling medium of water helps to maintain an internal check valve temperature that is below the coking threshold of diesel fuel (approx. 250 °F) while operating in an ambient environment in excess of 500 °F. Successful laboratory tests have been conducted with water temperatures up to 150 °F, water pressure at 40 psigand as little flow as 1/4GPM flow rate, while still maintaining an internal check valve temperature below the coking threshold.

JASC has found from engine tests that raising the cooling water flow to 1.0 GPM also enhances cooling of the check valve’s liquid fuel inlet and exit line when operating the engine on gaseous fuels for extended periods of time.

Product Specifications

Inlet Pressure: 0-1225 PSIG (800 PSIG Typical) 
Inlet Temperature: 60 °F to 250 °F
Flow Range: 0.5-15.0 GPM 
Check Pressure: 300 PSIG
Maximum Ambient Temperature: 400 °F 
Maximum Pressure Drop: 170 PSID 
Pressure Drop Tolerance: 155-170 PSID
Operating Flow: 15.00 GPM
Crack Pressure: 114-126 PSID
Cooling Flow: 1.0 GPM at 20 PSI drop from water inlet to water outlet 
Leakage in Check/Flow Direction: ANSI Class 6 or better Soakback Temperature: 700 °F
Contamination Level: 75 microns absolute, 98.6% 39 micron or less, 4 mg/100ml

Construction Materials

Stainless Steel


Part # Flow Crack Pressure Frame
101305-3 15GPM 120 PSID 9EA, 9FA, 7FA, 6FA
101320-3 20GPM 100 PSID 6FA, 7FA, 9FA
101321-3 20GPM 45 PSID 6FA, 7FA, 9FA
101320-2 20GPM 100 PSID 6FA, 7FA, 9FA
101321-2 20GPM 45 PSID 6FA, 7FA, 9FA