BETTS 4 in. TTMA Flange x ANSI Flange Stainless Steel Pneumatic Operated Sliding Valve w/ 316 SS Stem & Gates SV774SSTS

The Betts Pneumatic sliding valve meets requirements for an external self-closing stop valve. Valve does not contain a shear section. The cargo tank must protect the valve by providing suitable protection as specified in 49 CFR 178.345-8. The cylinder is air open with spring close and requires 90 psi line pressure to fully open. The PTFE encapsulated o-rings provide a positive seal for pressure or vacuum service and standard 316 stainless steel discs offer premium corrosion resistance. The adjustable packing nut with woven PTFE infused packing allows for easy stem adjustments. The air cylinder max working temperature is 250° F (121° C). A fusible plug, set to melt above 212° F (100° C), is installed in air cylinder to dump air pressure in case of fire. Note: Valve should NEVER be heated with flame. Features Pneumatic operated Stainless steel body with 316 SS stem & gate TTMA Flange x TTMA Flange Air open / spring close Teflon encapsulated seats Specifications   Size     TTMA OD     TTMA BC     TTMA Holes     TTMA Thickness     ANSI OD     ANSI BC     ANSI Holes     ANSI Thickness   3 in. 6.13 in. 4.88 in. (8) .44 in. .135 in. 7.25 in. 6 in. (4) .75 in. .5 in. 4 in. 7.13 in. 5.88 in. (8) .44 in. .135 in. 9 in. 7.5 in. (8) .75 in. .5 in. 6 in. 9.38 in. 8.13 in. (12) .44 in. .135 in. 11 in. 9.5 in. (8) .88 in. .5 in.