Safety Valves

Pilot Operated Safety Relief Valve LCB 100 mm Class 300

Supreme Valves India — Pilot-operated safety relief valve in LCB for low-temperature gas and cryogenic relief. Near-bubble-tight shutoff to 95% of set pressure with modulating relief action. DN100 (4 inch) flanged Class 300 RF. Sized per API 520; design and test per API 526 and API 527.

Key Applications

Natural Gas CompressionLPG StorageHigh Pressure SteamRefinery OverpressureCritical Process Fluids
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Technical Specifications

Valve Type Pilot Operated Safety Relief Valve
Nominal Size DN100 (4 inch)
Pressure Class ASME Class 300
Body Material ASTM A352 Gr. LCB
End Connection Flanged RF per ASME B16.5 / DIN EN 1092-1
Design Standard API 526
Sizing Standard API 520
Testing Standard API 527
Set Pressure Application specific — factory set and tested
Manufacturer Supreme Valves India

Material of Construction (MOC)

Component / Part Available Materials
Body / Bonnet ASTM A352 Gr. LCB
Trim / Internals SS 304 / SS 316 per service
Spring / Diaphragm SS 302 / SS 316 / Inconel per temperature
Gasket Aramid fibre, non-asbestos or spiral wound SS316/graphite

Purchase Options

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Features & Benefits

LCB Body Construction

Low Temperature Carbon Steel body (ASTM A352 Gr. LCB) selected for low-temperature gas and cryogenic relief.

Class 300 Flanged RF

DN100 (4 inch) raised-face flanged end connections for direct pipeline installation.

Export Documentation

Supplied with EN 10204 3.1 MTC, hydrostatic test report, and set-pressure certificate.

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