Pressure Reducing Valves
Pressure Reducing Valve - Gas & Air Direct Acting (Type F-166HP)
By Darling Muesco
Self-actuated spring and diaphragm operated high-capacity gas regulator that holds constant outlet pressure for air, nitrogen, natural gas and hydrogen.
Specifications
- Size range
- 15 NB – 150 NB
- Max pressure
- 20 kg/cm²
- Fluid supported
- Air, nitrogen, natural gas, hydrogen and industrial gases
- Body material
- Cast steel
- Actuation
- Self-actuated, spring and diaphragm operated
- Installations
- Thermotech System, Matrix Lab
Overview
A self-actuated, spring and diaphragm operated high-capacity pressure regulator for precise gas pressure control in commercial gas installations. Maintains constant outlet pressure independent of varying inlet pressure, maximizing combustion efficiency. Suitable for air, nitrogen, natural gas, hydrogen, and other industrial gases. Installed references include Thermotech System and Matrix Lab. Supplied, sized and serviced for gas systems across Nepal.
Features & Benefits
- Self-actuated spring and diaphragm design requires no external power or pilot supply, making it well suited for remote gas installations and skid-mounted combustion systems where instrument air is unavailable.
- High flow capacity in a direct-acting design avoids the need for a pilot-operated regulator in medium-duty applications, reducing cost and the number of potential failure points.
- Precise outlet pressure maintenance improves combustion efficiency by ensuring burners always receive gas at the correct supply pressure, which reduces fuel waste and emissions from incomplete combustion.
- Compatibility with hydrogen is a meaningful differentiator given increasing industrial hydrogen use, as many standard regulators are not rated or material-compatible for hydrogen service.
- Cast steel body handles the pressure and mechanical demands of industrial gas installations better than aluminium-bodied regulators, which are prone to thread damage and body distortion at higher pressures.



