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Flat Type Stations
Cabinet Type Stations
Slam Shut Valve
• BM5
Relief Valves
Dry Gas Filters
Water Bath Heaters
Filter Separators
Other Devices


OSE Slam Shut Valve



The purpose of the Type OSE slam-shut device is to totally and rapidly cut the flow of gas when the inlet and/or outlet pressure in the system either exceeds or drops below set points. The Type OSE consist of a valve, either mechanism box, BM1 or BM2, and either one or two manometric sensing devices (BMS1 or BMS2).

Overpressure and Underpressure Protection
Two-stage Tripping Mechanism
Sizes 1 through 6-inch (DN 25 through 150)
Sizes 8 and 10-inch (DN 200 and 250) is Manually Operated
High Accuracy
Easy In-Line Maintenance
Water Tight
Positive Shutoff

Body Size and End Connection Style
WCB Steel
1 and 2-inch NPT
1, 2, 3, 4, 6, 8 and 10-inch (DN 25, 50, 80, 100, 150, 200 and 250)
CL150 RF, CL300 RF or CL600 RF Flanged

Cast Iron
1 and 2-inch NPT
1, 2, 3, 4, and 6-inch (DN 25, 50, 80, 100, and 150)
CL125 FF, CL250 RF Flanged

Maximum Inlet Pressure
W1470 psig (101 bar) or maximum body rating, whichever is lower(1)(2)

(1)Relief pressure plus maximum allowable buildup over setting.
(2)The pressure / temperature limits should not be exceeded.

Maximum Set Pressure
1470 psig (101 bar) or maximum body rating, whichever is lower

Minimum Set Pressure
4.02-inches w.c. (10 mbar)

Maximum Shutoff Pressure Differential
1470 psig (101 bar) or maximum body rating, whichever is lower

Pressure Registration

Maximum Temperature Capabilities
-20° to 150°F (-29° to 66°C)

Pressure Sensing Connections
1/4-inch NPT

Vent Connection
1/4-inch NPT

Construction Materials
Body: WCC Steel or Cast Iron
Bonnet: Steel
Valve Plug: 300 Series Stainless Steel
Valve Plug Seal O-Ring: Nitrile (NBR)
Seat Ring: 300 Series Stainless steel
Mechanism Box: Aluminum
First and Second State Mechanism: Steel
Diaphragm: Reinforced Nitrile (NBR)
Bellows: 316 Stainless Steel
Piston: 316 Stainless Steel




• Explosion-proof switch
• Non-explosion-proof limit switch
• Solenoid

• Additional manometric device for extra pressure sensing