Parker M8A-RH4A-NET-SS-K1 - Relief Valves, 6,000 PSI - R Series

Parker's R Series Relief Valves are designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Pressures range from 10 PSI (0.7 BAR) to 6,000 PSI (413.7 BAR).
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Brand Parker
Part No. M8A-RH4A-NET-SS-K1
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Products specifications
Attribute nameAttribute value
Cracking Pressure50 - 350 psiMaximum Operating Pressure350 psi
Connection 1 SizeTwo Ferrule Compression FittingConnection Size8 mm
Connection 2 SizeTwo Ferrule Compression FittingMinimum Operating Temperature-43 °C
Actuation TypeStandardDivisionInstrumentation Products Division
Maximum Operating Temperature250 °FBack-Up Washer MaterialPTFE
Packing MaterialNeoprene RubberFlow Coefficient0.41 Cv
Materials of Construction316 Stainless SteelActuationStandard
Material316 Stainless SteelConnection Size8 mm
Connection Size 28 mmConnection 1 StyleTwo Ferrule Compression Fitting
Cracking Pressure (psi)50 - 350Packing MaterialNeoprene Rubber
Connection 2 StyleTwo Ferrule Compression Fitting
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