LESER COMPACT PERFORMANCE SAFETY VALVES OF TYPE 437
VAN AN TOÀN LESER 437
LESER COMPACT PERFORMANCE SAFETY VALVES OF TYPE 437
Information Product:
Safety valves with compact dimensions and high connection variety
- Standard delivery time for all options 14 days. Only a few more complex options have longer delivery times.
- Flanged and threaded valves with a wide range of options
- Small installation space with simultaneous horizontal installation option
- Bellows version available
- Set pressures up to 850 barg / 12325 psig
- LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%
Industries:
- Chemical
- Oil & Gas
- Petrochemical
- Energy
- Technical Gases
- LNG and LPG
- Pharmaceutical
- Food and Beverage
- Ship Building
- General industries
Technical specifications 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:n PN 40 – PN 400 | CL150 – CL2500
- Temperature (in accordance with DIN EN): -270 to 280 °C | -454 to 536 °F
- Temperatur (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 Sec. VIII Div. 1, CRN, AQSIQ, EAC
- Classification societies: LR, RINA, DNV GL, BV
