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product page - LESER Compact Performance pressure relief valves - Type 437

COMPACT PERFORMANCE

TYPE 437

Type 437 LESER Compact Performance pressure relief valves
Type 437 LESER Compact Performance pressure relief valves
Type 437 LESER Compact Performance pressure relief valves

Industries

Approvals

Type 437 LESER Compact Performance pressure relief valves are designed, marked, produced and approved according to the requirements of the following regulations:

ce-mark logo

UV

asme-uv logo
EAC logo

Technical Specifications for Type 437

Nominal Diameter Inlet - Thread

G 3/8 - 1 | NPT 1/2" - 1"

Nominal Diameter Inlet - Flange

DN 15 - DN 25 | 1/2" - 1"

Actual Orifice Diameter d₀

6 - 10 mm | 0.236 - 0.394 in

Actual Orifice Area A₀

28.3 - 78.5 mm² | 0.044 - 0.122 in²

Pressure

0.1 - 365 bar | 1.5 - 5294 psig

Flange Rating Inlet

PN 40 - PN 400 | CL150 - CL2500

Temperature (in accordance with DIN EN)

PN 40 - PN 400 | CL150 - CL2500

Temperature (in accordance with DIN EN)

-270 to 280 °C | -454 to 536 °F

Temperature (nach ASME)

-268 to 280 °C | -450 to 536 °F

Material Outlet Body

1.4104, 1.4404 | SA 479 430, SA 479 316L

Material inlet body

1.4104, 1.4404, 1.4404 stellitiert | SA 479 430, SA 479 316L, SA 479 316L stellitiert

Valve Connection

Thread acc. to DIN ISO 228-1, DIN ISO 7-1 / BS 21 or ASME B1.20.1, Flange acc. to DIN EN 1092-1 or ASME B16.5

Bellows Material (optional)

No bellows

Load Type

Spring loaded

Approvals

PED/ DIN EN ISO 4126-1, AD 2000-Merkblatt A2, ASME Section XIII certified for Section VIII Div. 1 service, CRN, AQSIQ, EAC

Classification societies

LR, RINA, DNV GL, BV

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Downloads

Access all the necessary documents and detailed information for pressure relief valves in our download area.

view of download the LESER Compact Performance product catalogue
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