DN20 LGS HI-FLOW Relief Valve H3620A1B06

20mm 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)	1,950.57	4,361.60	9,752.83	13,792.58	16,892.39	19,505.65	21,367.37

Liquid (Hot Water)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kg/Hour)	2,850.83	6,374.64	14,254.13	20,158.38	24,688.88	28,508.26	31,229.23

Gas (Air)

Pressure (bar g.)	0.2	1.0	5.0	10.0	15.0	20.0	24.0
Flow Rate (kg/Hour)	115.30	216.25	666.49	1,229.30	1,792.10	2,354.91	2,805.15

Steam (Saturated Steam)

Pressure (bar g.)	0.2	1.0	2.5
Flow Rate (kg/Hour)	68.24	137.07	239.96

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	314 mm² (20mm inlet bore diameter)
Inlet Connection	3/4" BSP female
Outlet Connection	1" 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)