S & R
TYPE 440
Heating & Air Conditioning >
Approvals
Type 440 LESER S&R pressure relief valves are designed, marked, produced and approved according to the requirements of the following regulations:
Technical Specifications for Type 440
Nominal Diameter at Inlet
DN 20 - DN 150 | 3/4" - 6"
Actual Orifice Diameter dâ‚€
18 - 125 mm | 0.71 - 4.92 in
Actual Orifice Area Aâ‚€
133 mm² - 12.272 mm² | 0.206 in² - 19.022 in²
Pressure
1 - 10 bar | 14.5 - 145 psig
Flange Rating Inlet
PN 16 | PN 16
Temperature (in accordance with DIN EN)
up to 120 °C | up to 248 °F
Body Material
0.6025, (0.7043, 1.0619) | Cast steel, Ductile Gr. 60-40-18 / SA 216 WCB
Valve Connection
Flange acc. to DIN
Bellows Material (optional)
EPDM
Load Type
Spring-loaded
Approvals
TRD 721, PED/ DIN EN ISO 4126-1, PED/ AD 2000-Merkblatt A2, EAC
Downloads
Access all the necessary documents and detailed information for pressure relief valves in our download area.
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