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industrial valves
General Valve

Introduced in 1941, General Valve Twin Seal Valves, were the first to meet the rigid requirements of double block & bleed service – almost 80 years ago. In the years since, subtle yet significant design refinements have been made to improve the valve’s performance. The General Valve Twin Seal Valve replaces the antiquated two-valve system with just one double seated bubble-tight valve. The upstream and downstream seals provide the same function as the two block valves. The body (serving as a spool piece) bleed verifies seal integrity.

logo General Valve

Quick (stock) delivery possible for a selection of General Twin Seal, Tru Seal and four-way diverter valves​

General valve dual expanding plug valve & four-way diverter valve, Twin Seal and Tru Seal​

Model 200 (211, 221, 241) with manual operator (201, 202, 203, 202G, 203G)​
#150 : 2”, 3”, 4” & 6”​
#300 : 2”, 3” & 4” ​
#600 : 2”, 3” & 4” ​

Model 8800A (881A, 8821A, 8841A) with manual operator (625H, 625G, 751G, 1261G, 1276G, 1500G)​
#150 : 8”, 10”, 12”, 14”, 16”, 18”, 20”, 24”, 30”, 36”​
#300 : 6”, 8”, 10”, 12”, 16”, 20”, 24” & 30”​
#600 : 6”, 8”, 10”, 12”, 16”, 20” & 24”​

Model 800 (C821, CA821, C841, C851, C861) with manual operator (1261G, 1261-7G, 1276G, 625G, 755G)​
#300 : 14” & 18”​
#600 : 14”​
#900 : 2” 3”, 4”, 6”, 8” & 10”​
#1500 : 2” & 3” ​

Model 900 (C911, A1911, C921, CA921, C941) with manual operator (501 TS, 625 TS, 751 TS, 1261 TS, 1261.7 TS 1276 TS, 1500 TS)​
#150 : 2”, 3”, 4”, 6” 8”, 10”, 12”, 14”, 16”, 18”, 20” & 24”​
#300 : 2”, 4”, 6” 8”, 10”, 12”,  16”, 18” & 20”​
#600 : 2”, 4”, 6” 8”, 10”, 12”,  16”, 18” & 20”​
full bore, piggable​

Model 400 (C411, C421, C441) with manual operator (1261 TS, 1276 TS)​
#150 : 18”, 20” & 24”​
#300 : 24”​
#600 : 18”​
short pattern​

Body material : WCC (model 200 & 8800A), WCB (400, 800 & 900)​

Slip materials available:​
Viton, Viton 90-dutometer, Viton Extreme, fiber reinforced Viton, Viton GF, PPE low temperature Viton, Viton GFLT, Viton 90-durometer GFLT, Nitrile, Nitrile 90-durometer, Low temperature nitrile, Low temperature 90-durometer Nitrile, modified Nitrile, Ethylene Propylene, Fluorsilicone, Aflas, VTR 6279, PTFE (Teflon)​

The operator (handwheel or actuator) can be oriented each 45 degrees.​

Flanged ANSI or DIN​

Applications, metering station, multi product (fuel) manifolds, tank storage, tank, farms, pipe lines, tank isolation, fuel hydrant isolation, fuel loading & unloading, airports, filling lines, etc.​

Actuators (for TwinSeal, TruSeal)
Pneumatic piston spring to close​
-ESD service​
-2 way manual override​
-fail close​
-mechanically lock the valve open or close​
-fail close, fail open or fail in place​
-optional with limit switches​
Pneumatic diaphragm double acting with volume tank​
-final operating stroke after regular air supply failure​
-optional limit switches​
Pneumatic diaphragm spring to close​
-fail to close​
-optional limit switches​

Pressure relief systems (required for API 6D with liquid service)​
-manual bleed​
-safety bleed & differential thermal relief (DTR), standard delivery​
-safety block & & differential thermal relief (DTR), fire safe​
-automatic body bleed​
-line-relieving safety bleed & & differential thermal relief (DTR) = LRDTR​
​​
Four-way diverter valve​

Gear operated model types (B4711, CA4711, C4721, B4721, CA4721, C4741, CA4741, C4751)​
#150 : 12 &16”​
#300 : 2”, 3”, 4”, 6”, 8”, 10”, 12”, 12”, & 16”​
#600 : 2”, 3”, 4”, 6”, 8”, 10” & 12”​
#900 : 3”, 4”, 6”, 8” & 10”​

Electrohydraulic operated (HGO) model types (CA4711, B4711, C4711, CA4721, B4721, C4721, CA741, C4751)​
#150 : 12”, 16” & 20”​
#300 : 12”, 16” & 20”​
#600 : 12”​
#900 : 10”​

Body material : WCB​