Masoneilan 78-80H High-Capacity Pneumatic Transfer Valve
The Masoneilan 78-80H High-Capacity Pneumatic Transfer Valve is designed for reliable pressure-responsive air switching in industrial pneumatic actuator systems.
- 100–700 kPa (1–7 Bar) Adjustable Set Pressure
- Cv 4.5 Flow Coefficient, IN to OUT
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- 1 Year Warranty
Product Overview
The Masoneilan 78-80H High-Capacity Pneumatic Transfer Valve is designed for reliable pressure-responsive air switching in industrial pneumatic actuator systems. Manufactured by Baker Hughes under the Masoneilan brand, this three-way transfer valve combines an integrated floating-ball pilot valve with a high-capacity pneumatic switching mechanism. It automatically redirects instrument air when the pilot signal pressure falls below a predetermined setting, supporting controlled actuator response during air supply failures and other specified operating conditions.
Part of the Masoneilan 78-80 Series, the 78-80H features an adjustable switching pressure range of 100–700 kPa, a maximum body operating pressure of 1.72 MPa, and standard Rc 1/2 pneumatic connections. Its high-capacity design provides Cv 4.5 for inlet-to-outlet flow and Cv 5.0 for outlet-to-exhaust flow. The valve is suitable for industrial pneumatic control applications involving oil and gas processing, chemical manufacturing, petroleum refining, power generation, water treatment, and automated valve systems.
Technical Specifications
|
Specification |
Value |
|---|---|
|
Product Name |
High-Capacity Pneumatic Transfer Valve |
|
Manufacturer / Brand |
Masoneilan / Baker Hughes |
|
Main Model |
78-80H |
|
Product Series |
78-80 |
|
Product Type |
Three-Way Pneumatic Transfer Valve |
|
Pneumatic Capacity |
High Capacity |
|
Operating Principle |
Pilot-Operated Pneumatic Switching |
|
Pilot Valve |
Integrated Floating-Ball Pilot |
|
Adjustable Set Pressure |
100–700 kPa (1–7 Bar) |
|
Maximum Body Pressure |
1.72 MPa (17.2 Bar) |
|
Maximum Signal Pressure |
1.03 MPa (10.3 Bar) |
|
Pressure Hysteresis |
34 kPa or Less |
|
Flow Coefficient, IN to OUT |
Cv 4.5 |
|
Flow Coefficient, OUT to EXH |
Cv 5.0 |
|
Standard Main Connections |
Rc 1/2 |
|
Optional Main Connections |
NPT 1/2 |
|
Signal Connection |
Rc 1/4 or NPT 1/4 |
|
Standard Housing Material |
Aluminium Alloy |
|
Optional Housing Material |
316L Stainless Steel |
|
Standard Operating Temperature |
−30°C to +83°C |
|
Optional Temperature Range |
0°C to +100°C |
|
Pressure Adjustment |
Adjustable Spring Mechanism |
|
Operating Medium |
Clean, Dry Instrument Air |
|
Related Models |
78-80S, 08-80S, 08-80H, 78-40 |
|
Condition |
New |
|
Warranty |
1 Year |
Key Features
High-capacity three-way pneumatic transfer valve for industrial actuator control
Integrated floating-ball pilot for automatic pressure-responsive switching
Adjustable switching pressure range of 100–700 kPa
Maximum body operating pressure of 17.2 bar
Cv 4.5 inlet-to-outlet flow capacity for pneumatic air delivery
Cv 5.0 outlet-to-exhaust flow capacity for rapid pressure release
Standard Rc 1/2 pneumatic connections for high-capacity airflow
Durable aluminium alloy housing with optional stainless steel construction
Adjustable spring mechanism for precise pressure switching
Supports actuator air failure response and pneumatic transfer applications
Operates using pneumatic pressure without external electrical power
Suitable for industrial valve maintenance and equipment replacement
Typical Applications
Industrial pneumatic actuator control systems
Oil and gas production and processing facilities
Chemical and petrochemical manufacturing plants
Petroleum refining and processing installations
Power generation and utility systems
Water and wastewater treatment facilities
Industrial manufacturing and production machinery
Pneumatic instrument air switching systems
Control valve air failure response applications
Industrial pneumatic automation and maintenance
Shipping & Support
Fast dispatch – Australia & Worldwide Shipping
Technical assistance available
1-year warranty
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