DN25 LGS HI-FLOW Relief Valve H3625A3C36

25mm Nominal Bore Single Trim Enclosed Discharge Relief Valve for Liquid, Gas and Steam

Notes:

Maximum Pressure when used on Saturated Steam is 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)	3,047.76	6,814.99	15,238.79	21,550.90	26,394.36	30,477.58	33,386.51

Liquid (Hot Water)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kg/Hour)	4,454.42	9,960.38	22,272.08	31,497.47	38,576.37	44,544.15	48,795.68

Gas (Air)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kg/Hour)	180.16	337.88	1,041.39	1,920.77	2,800.16	3,679.54	4,383.05

Steam (Saturated Steam)

Pressure (bar g.)	0.2	1.0	2.5
Flow Rate (kg/Hour)	106.62	214.18	374.94

Min Pressure	0.2 bar g. (2.9 psi g.)
Max Pressure	24 bar g. (348 psi g.) 2.50 bar g. (36.25 psi g.) on steam
Temperature Range	-45°C to 140°C
Flow Area	490.62 mm² (25mm inlet bore diameter)
Inlet Connection	1" BSP female
Outlet Connection	1 1/4" BSP female
Flow Rate	Refer to Flow Tables
Materials	Bronze
Seal Material	EPDM
Test Certifications	Supplied free of charge
Approval	UKCA – PE(S)R, BS EN ISO 4126-1, PED Pressure Equipment Directive (CE Marked), EAC customs union (Russia, Belarus and Kazakhstan)