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Sewon Q&TECH

Product

Sewon is the world's best company and will manage the world.

P/V Relief Valve

For your safety, choose our products.

NOMINAL SIZE

- 1-1/2", 2", 3", 4", 6", 8", 10", and 12"

CONNECTIONS

- ANSI/ASME B16.5 Class 150 Flange
- KS/JIS 10K Flange

Pressure Relief Valve
Installed in a storage tank or system where there is no possibility of
generating a vacuum or a Vacuum Relief device is installed separately
and only pressure relief function is required.

Drilling conforming to ANSI/ASME B16.5 for Class 150 Flanges,
or KS/JIS 10K Flanges
Designed that the pallet can be seated correctly because of Pallet Guide.
Designed protect storage tank from internal over-pressure, and standard
air-cushioned pallet assures minimal internal vapor leakage
Suitable materials available for corrosive Chemical, and supply
various size valve.
NBR(Buna-N), VITON and other seating materials are available
when required
▶ Consult our factory for special application.

Specifications

Service Pressure and Vacuum Relief, End-of-line
Set pressure & set vacuum, min/max.
Weight loaded type.
Spring loaded type
22mmH2O(0.5oz/sq.in) / 700mmH2O(1psi)
700mmH2O(1psi) / 1.05kg/㎠(15psi)
Temperature range(standard) -45℃~120℃(-113℉~+248℉)

Materials

PART NAME MATERIALS STANDARD MATERIALS OPTIONAL
Body & Cover Carbon Steel, 304 S.S, 316 S.S, Aluminum Hastelloy, Alloy 20, FRP, PTFE, ETFE LINED
Seat 304 S.S, 316 S.S, Aluminum Hastelloy, Alloy 20, FRP, PTFE, ETFE LINED
Pallet 304 S.S, 316 S.S Hastelloy, Alloy 20, FRP, PTFE, ETFE LINED
Pallet Guide 304 S.S, 316 S.S 316 S.S, PTFE COATING
Seating Diaphragm FEP TEFLON (Weight loaded type)
VITON O-ring (spring loaded type)
Metal to metal
Weather Hood 304 S.S, Aluminum 316 S.S

▶ Other special materials and special specifications are available upon customer`s request.

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