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Leslie Controls Model GPD Series Pressure Regulator

Leslie Controls Model GPD Series Pressure Regulator

Control Air Type 1227 Pressure Regulator

Control Air Type 1227 Pressure Regulator

Schroedahl Type BPV Back Pressure Regulator

Product Features

  • Prevents evaporation and cavitation and ensures smooth operation
  • Forged housing material, carbon steel or stainless steel
  • Special material possible
  • Internal operation (no external energy source required)
  • Easy to install
  • Low maintenance

Application

  • Maintaining the pressure in the fl ow recirculation or return line to the tank

Nominal Diameter:  DN 25-300 / NPS 1-12

Pressure Class:  PN 16-400 / Class 150-2500

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Availability: In stock
SKU
SH00500W

Product Features

  • Prevents evaporation and cavitation and ensures smooth operation
  • Forged housing material, carbon steel or stainless steel
  • Special material possible
  • Internal operation (no external energy source required)
  • Easy to install
  • Low maintenance

Application

  • Maintaining the pressure in the fl ow recirculation or return line to the tank

Technical Data

Nominal diameter DN 25 – 300 / NPS 1 - 12
Pressure class PN 16–400 / Class 150 – 2500
Temperature (max.)

Up to 230 °C / 446 °F

(other temperatures on request)

Housing material 1.0460 / A105
1.0571 / LF2
1.4404 / F316L
1.4501 / F55
Housing type Forged
Media Liquids of all kinds
(water, oils, chemicals and others)
Flanges EN 1092-1, ASME B16.5, ISO 7005, JIS, JPI, welding ends of request
Designs As intermediate flange version (Z version)
or with integrated flanges (K version)
Number of stages (max.) 1
Number of controlled stages (max.) 1
Operating range (max.) Delta p up to max. 10 bar

Function

Even the optimal and sophisticated pressure reduc tion of the SCHROEDAHL automatic recirculation valves and control valves set extreme conditions limits in some installations.

SCHROEDAHL back pressure regulators type BPV are used in such cases.

They increase the distance to the evaporation pressure of the medium by generating a defined pressure difference. This prevents unwanted evaporation and cavitation and ensures smooth and gentle operation.

Careful adjustment of the operating parameters between minimum fl ow or control and back pressure valves ensures optimum system operation.

The pressure difference at the back pressure valve as specified in the design shifts the bushing (item 204) in the direction of flow against the pressure spring (item 237). This releases the throttle cross sections at the bushing until the specified pressure difference is attained.