Low pressure & high flow UHP cylinder valve - D337

D337 low pressure manual cylinder valve for Ultra High Purity, corrosive, reactive and toxic gases is designed for keeping the highest level of purity of the gas, thanks to the tied diaphragm technology. The D337 valve is also available with the Rotarex puretec Open/close indicator for an improved safety.
Key advantages
  • Reduced dead space and gas wetted volumes allow easy purging
  • No particle generating threads in the gas wetted part
  • Prevents seizure - Gas does not come into contact with the valve operating mechanism
  • Back-up welded diaphragms provide a permanent and durable gas tight seal
Gas TypePure & Ultra-pure
ConnectionsAccording (inter-)national standards and customer specifications
Working pressure45 bar
Flow rateCV=0.7
Temperature range-40 to +65 °c
Body materialsStainless steel 1.4435 (AISI 316L), Hastelloy® C22, Nickel 200,Monel® 2.4360 (Monel 400)
Leak rate1.10-8 M bar l/s
Seat orifice size8 Mm
Markingπ0029 (according to TPED), 3 stars, valve number, manufacturing date
Dimensional drawings
Downloadable catalogs, brochures
  • Download
    Puretec overview
    Last update: Jan 15, 2024
    Available in: en
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