DN40 LGS Relief Valve L3640A1397

40mm Nominal Bore Single Trim Enclosed Discharge Relief Valve for Liquid, Gas & Steam

Notes:

Maximum Pressure when used on saturated steam us 14 bar g. (203 psi g.)

Overpressure = Set pressure +10% (or 0.1 bar g., whichever is greater)

Blowdown Pressure (Gas & Steam) = Set pressure -15% (or 0.3 bar g., whichever is greater)

Blowdown Pressure (Liquid) = Set pressure -20% (or 0.6 bar g., whichever is greater)

Liquid (Water)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kg/hour)	4,993.45	11,165.69	24,967.23	35,309.00	43,244.52	49.934.47	54,700.47

Liquid (Hot Water)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kW)	7,298.11	16,319.08	36,490.57	51,605.46	63,203.52	72,981.14	79,946.83

Gas (Air)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kg/Hour)	295.17	553.59	1,706.21	3,417.00	4,587.78	6,028.56	7,181.19

Steam (Saturated Steam)

Pressure (bar g.)	0.2	1.0	5.0	10.0	14.0
Flow Rate (kg/Hour)	174.69	350.91	1,046.49	1,900.27	2,579.21

Min Pressure	0.2 bar g. (2.9 psi g.)
Max Pressure	24 bar g (348 psi g.) and 14.00 bar g. (203.00 psi g.) on Steam
Temperature Range	-60°C to 200°C
Flow Area	803.84mm² (32mm Inlet bore diameter)
Inlet Connection	1 1/2" BSP Female
Outlet Connection	1 1/2" BSP Female
Flow Rate	Refer to Flow Table Above
Materials	Bronze
Seal Material	PTFE
Test Certifications	Supplied free of Charge
Approval	UKCA - PE(S)R, VS EN ISO 4126-1, PED Pressure Equipment Directive (CE Marked), EAC customs Union (Russia, Belarus and Kazakhstan)