Masoneilan 78-40 Air Filter Pressure Reducing Regulator
The Masoneilan 78-40 Air Filter Pressure Regulator is designed to provide clean, stable, and accurately regulated compressed air for industrial pneumatic control systems.
- 5–100 psi (0.35–7 bar) Adjustable Outlet Pressure
- Cv 0.25 Flow Coefficient
- 1/4 Inch NPT or Rc Connection Size
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- 1 YearWarranty
Product Overview
The Masoneilan 78-40 Air Filter Pressure Regulator is designed to provide clean, stable, and accurately regulated compressed air for industrial pneumatic control systems. Manufactured by Baker Hughes under the Masoneilan brand, this pressure-reducing regulator maintains a consistent downstream pressure despite variations in supply pressure. Its adjustable outlet pressure range of 5–100 psi (0.35–7 bar) makes it suitable for supplying instrument air to valve positioners, I/P transducers, and other pneumatic control equipment.
Part of the Masoneilan Model 78 Series, the 78-40 combines pressure regulation, 5-micron air filtration, and an internal relief mechanism in a compact aluminium housing. Its adjustable pressure-setting knob, locking screw, and stainless steel drain support convenient operation and maintenance. The regulator is suitable for oil and gas facilities, chemical processing, power generation, water treatment, and industrial automation applications.
Technical Specifications
|
Specification |
Value |
|---|---|
|
Product Name |
Air Filter Pressure Reducing Regulator |
|
Manufacturer / Brand |
Masoneilan / Baker Hughes |
|
Model Number |
78-40 |
|
Product Series |
Model 78 |
|
Product Type |
Instrument Air Filter Regulator |
|
Operating Principle |
Spring-Loaded Diaphragm Pressure Regulation |
|
Adjustable Outlet Pressure |
5–100 psi (0.35–7 bar) |
|
Maximum Inlet Pressure |
210 psi (15 bar) |
|
Flow Coefficient |
Cv 0.25 |
|
Filter Rating |
5 Microns |
|
Filter Material |
Sintered Porous Polyethylene |
|
Connection Size |
1/4 Inch NPT or Rc |
|
Body Material |
Die-Cast Aluminium |
|
Diaphragm Material |
Nitrile Rubber (NBR) |
|
Internal Relief Valve |
Included |
|
Pressure Adjustment |
Adjustable Knob with Locking Screw |
|
Pressure Gauge Ports |
Two |
|
Drain Valve |
Stainless Steel |
|
Standard Operating Temperature |
−40°C to +83°C |
|
Air Consumption |
0.004 scfm |
|
Approximate Weight |
0.45 kg |
|
Operating Medium |
Clean Compressed Instrument Air |
|
Condition |
New |
|
Warranty |
1 Year |
Key Features
Adjustable outlet pressure range of 5–100 psi for instrument air regulation
Maximum inlet pressure rating of 210 psi
Integrated 5-micron filter for removing airborne particles
Built-in relief valve for controlled downstream pressure relief
Durable die-cast aluminium housing for industrial applications
Spring-loaded diaphragm mechanism for stable pressure regulation
Adjustable pressure-setting knob with locking screw
Two pressure gauge ports for flexible gauge installation
Stainless steel drain for convenient maintenance
Compact and lightweight construction for easy installation
Standard 1/4-inch pneumatic connections
Suitable for industrial valve positioners and I/P transducers
Typical Applications
Industrial instrument air pressure regulation
Pneumatic valve positioner air supply
Oil and gas production and processing facilities
Chemical and petrochemical manufacturing
Power generation and utility systems
Water and wastewater treatment facilities
Industrial manufacturing and automation
I/P transducer air supply systems
Pneumatic control valve assemblies
Industrial instrumentation maintenance
Shipping & Support
Fast dispatch – Australia & Worldwide Shipping
Technical assistance available
1-year warranty
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