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SAFETY RELIEF VALVE (L.P.) (S50)

1/2" Stainless Steel Vent to Atmosphere Style Safety Relief Valve for Set Pressures from 0.7 to 40 bar, with Liquid or Gas. Approved as a Safety Accessory to Category IV of the Pressure Equipment Drective 97/23/EC.

PRESSURE EQUIPMENT DIRECTIVE (PED) 97/23/EC APPROVED
STAINLESS STEEL (316 / 1.4404)
MATERIAL OPTION: BRASS
SUITABLE FOR LIQUID OR GAS USE
VENTING TO ATMOSPHERE

7:1 Product Catalogue Page

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Technical Specification
Material Option (non-std) :	B = Brass
Valve Type:	S50
Porting/Connection Options:	P = BSP (Parallel) N = NPT (Taper)
Valve Options:	RG = Relieving Gear
Pressure/Spring Options:	0.7 - 2B, 2 - 7B, 6 - 12B, 11 - 25B, 20 - 40B (B = Bar)
Max. Working Pressure: Liquid/Gas :	600 psi
Orifice Size:	Ø9.8mm
Connection Size:	1/2"
Valve Seat Material:	Stainless Steel - 316/1.4404
Seal Material:	Viton (other materials available by request)
Dry Weight: (kg) :	0.3
Working Temperature Range:	-10°C to +160°C

Derivative options available
	BS50N-12B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos, Model range: 0.7 - 40 bar, 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-25B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos, Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-2B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos, Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-40B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos, Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-7B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos, Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-RG-12B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-RG-25B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-RG-2B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-RG-40B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50N-RG-7B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-12B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, Model range: 0.7 - 40 bar, 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-25B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-2B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-40B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-7B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-RG-12B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, RG: Relieving gear, Model range: 0.7 - 40 bar, 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-RG-25B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, RG: Relieving gear, Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-RG-2B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, RG: Relieving gear, Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-RG-40B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, RG: Relieving gear, Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	BS50P-RG-7B SAFETY RELIEF VALVE (L.P.) (S50) BS50: 1/2" Brass Safety Relief Valve, P: 1/2" BSP parallel inlet, Vent to atmos, RG: Relieving gear, Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-12B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos. , Model range: 0.7 - 40 bar , 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-25B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-2B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-40B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-7B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-RG-12B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-RG-25B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-RG-2B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-RG-40B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50N-RG-7B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, N: 1/2" NPT male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-12B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos. , Model range: 0.7 - 40 bar , 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-25B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-2B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-40B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, ?9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-7B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos. , Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-RG-12B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 12B: Spring range: 6 to 12 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-RG-25B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 25B: Spring range: 11 to 25 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-RG-2B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 2B: Spring range: 0.7 to 2 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-RG-40B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 40B: Spring range: 20 to 40 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD:
	S50P-RG-7B SAFETY RELIEF VALVE (L.P.) (S50) S50: 1/2" 316 St. St. Safety Relief Valve, P: 1/2" BSPP male inlet, Vent to atmos., RG: Relieving gear, Model range: 0.7 - 40 bar, 7B: Spring range: 2 to 7 bar, Ø9.8mm sensing orifice, Viton seals: -10°C to +160°C, Suitable for use with liquid or gas.	QTY RQD: