LESER Compact Performance Type 459

Product Benefits

  • Great variety of threaded or flanged connections.
  • Valve sizes from ⅜” through 1½”
  • Broad set pressure range up to 850 bar / 12328 PSIG.
  • Wide range of materials and options to fit any application.
  • Stellited metal sealing for longer product life.
  • Soft seat for superior tightness.
  • Single trim for steam, gas, and liquid.

Technical Data

Nominal Diameter Inlet-Thread: 1/2″ – 1 1/2″ | 1/2″ – 1 1/2″

Nominal Diameter Inlet-Flange: DN 15 – DN 25 | 1/2″ – 1″

Actual Orifice Diameter d₀: 9 – 17.5mm | 0.354 – 0.689 in

Actual Orifice Area A₀: 63.6 – 241mm² | 0.099 – 0.374 in²

Pressure: o.2 – 250 bar | 2.9 – 3626 PSIG

Flange Rating Inlet: PN 40 – PN 400 | CL150 – CL2500

Temperature (in accordance with DIN EN): -273 TO 450℃ | -459 to 842℉

Temperatur (nach ASME): -196 to 450 °C | -321 to 842 °F

Material Outlet Body: 1.0619, 1.4408, 0.7043 | SA 216 WCB, SA 351 CF8M, Duktil Gr. 60-40-18

Material Inlet Body: 1.4104, 1.4404 | SA 479 430, SA 479 316L

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

Bellows Material (optional): Stainless steel, elastomer and Hastelloy

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, DNV GL, BV, ABS

Application

  • Thermal relief
  • Air/gas compressors and pumps
  • Technical gases and CO₂ plants
  • LPG/LNG terminals, carriers etc.
  • Chemical equipment and piping
  • Cryogenic systems and oxygen applications

Make An Enquiry

    Information provided on this form will be used for sales follow up and for marketing purposes. You can opt out at any time. Click here to read our privacy policy for full details.
  • This field is for validation purposes and should be left unchanged.

Let’s Connect

Get in touch with our dedicated team. We are here to help!