Dome Pressure Regulator 737LE-HD/S-ES, for high inlet and outlet pressures

Dome Pressure Regulator 737LE-HD/S-ES, for high inlet and outlet pressures

Stainless steel, connections G 3/4″ F / G 1″ F, Kv value 1.65 / Cv value 1.9

  • maximum pressure stability even during flow and temperature fluctuations
  • back pressure range 0.5 – 60 bar
  • suitable for high pressures at the inlet, up to 300 bar
  • also suitable for various aggressive and toxic gases
  • ready-to-use
  • connections: G 3/4″ IG; G 1″ IG; 3/4″ NPT
  • option: lockable spindle hood against unauthorized adjustment

Product of WITT

Download Datasheet



High-performance dome-loaded pressure regulator-set. For high and varying flows requiring maximum pressure stability. A complete solution, applicable as a manifold pressure regulator per DIN EN ISO 7291.


  • Pilot Control Tube (PCT): One of the features enabling highly accurate control of outlet pressure
  • Balanced Seat Design (BSD): Further enabling control precision, high reliability and low maintenance
  • A complete solution, ready to use. With integrated pilot pressure regulator, and stainless steel pressure gauges, completely assembled and tested
  • Own-medium controlled. Enabling autonomous operation
  • Closed system. No gas is released to the atmosphere
  • Simple to install and operate. Removable spindle enables the simple setting of the required outlet pressure. Can be positioned at any angle/orientation. For indoor and outdoor installation.

Operation / Usage

Ideal for process gas supply where pressure accuracy is required even when inlet pressures and flow rates are varying. High flow rates and outlet pressure accuracy are achieved, even when the difference between inlet and outlet pressures is small. Own-medium controlled, with the integrated pilot gas regulator, meaning no separate gas supply is required.


Annual testing of body leak tightness is recommended. Depending on the application, moving wetted parts may need periodic replacement. Device-specific Maintenance-Kit is available upon request.


Company certified according to ISO 9001, ISO 22000 and PED 2014/68/EU Module HCE-marked according to PED 2014/68/EUATEX 2014/34/EU with ignition hazard analysis according to EN 1127-1, DIN EN 13463-1 and ZH1/200

Analysed for Food Safety per HACCP-Analysis

Fulfils the requirements of EU Regulations (EC) 1935/2004, and (EC) 2023/2006

Fulfils the requirements of German Food and Feed (LFGB) Law, and is suitable for contact with food gases

Available upon request

Lockable spindle cap

Certificates and test reports

Other Dome types

Switchover systems / parallel supply systems

Customer-specific / customised versions

Related Products

Request Quote For

Dome Pressure Regulator 737LE-HD/S-ES, for high inlet and outlet pressures