Back Pressure Valve

Micro / Ultra-micro Low Flow Back Pressure Valve

The micro-pressure back pressure valve is designed with a single-diaphragm structure using rubber or PTFE diaphragm for pressure transmission. It is specifically designed for micro-pressure requirements and provides stable inlet pressure for high-flow liquids and gases. The valve body and diaphragm adopt a soft sealing form and can be installed at the top of the storage tank as a pressure relief valve or nitrogen release valve.

Technical Parameters:

  • Pressure sensing type: Diaphragm
  • Pressure gauge interface (optional): 1/4" NPT internal thread or M14*1.5 

  • Internal thread:  Interface size 1/8" - 4" internal thread, flange, clamp, quick coupling, etc.

  • Operating temperature: -20 - 180℃

  • Pressure resistance:  Maximum 6 bar

  • Pressure adjustment: 0-10KPa; 0-30KPa; 0-50KPa; 0-100KPa


Valve body, valve core, spring seat: SS304 or 316L stainless steel, PVDF, lined with fluorine, Hastelloy alloy, etc.

Spring:  65Mn,stainless steel

Valve seat seal: Fluorine rubber etc.

Diaphragm: PTFE, NBR, fluorine rubber, metal diaphragm

Product Description

Design Features of Ultra-micro Low Flow Back Pressure Regulator:

The valve body is made of stainless steel, with a PTFE diaphragm, and O-rings and valve seats can be made of EPDM or FFKM material. back pressure regulators can be used in the food, pharmaceutical, chemical and other industries.

The balanced valve seat, external pressure feedback, and super-large diaphragm sensing provide precise and stable throttling control, with adjustable pressure down to zero.

The internal design has no dead corners, which is convenient for cleaning and can be cleaned online with CIP. Maintenance is easy, and the valve does not need to be removed for online repair of better parts. For more corrosive media, the valve body material can be made of PVDF or metal-lined with PTFE.

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