Description
1" BSP Manual Pressure Limiting Valve 5–120 Bar – RSG 780-H
The RSG 780-H is a high-performance, manually adjustable pressure limiting valve designed for reliable pressure control in industrial liquid systems operating between 5 and 120 bar. Featuring infinitely variable pressure adjustment, external pneumatic control and a robust galvanised steel body, this valve provides dependable pressure limiting for demanding industrial and process applications.
Designed to handle compatible liquids containing contamination particles up to 50 microns, the 780-H combines a DN15 flow passage with a 1" BSP female threaded connection, delivering flow rates up to 6 m³/hr.
Its FKM sealing system and durable construction make it suitable for hydraulic and industrial liquid pressure control systems where accurate manual adjustment and reliable pressure limitation are required.
Pressure Control & Adjustment
The RSG 780-H provides stepless manual pressure adjustment across a 5–120 bar operating range, allowing the pressure limiting setting to be matched to the requirements of the installation.
The externally controlled design requires a pneumatic control air supply, filtered to 40 microns, with a maximum control pressure of 8 bar.
Construction & Media Compatibility
Manufactured from galvanised steel with FKM seals, the valve is designed for compatible industrial liquids, including media containing contamination particles up to 50 microns.
The robust construction is suitable for demanding industrial environments where controlled pressure limitation and dependable operation are essential.
Pressure, Flow & Temperature
The valve offers a pressure adjustment range of 5–120 bar with a nominal DN15 passage and a rated flow capacity of 6 m³/hr.
Operating temperatures:
Media temperature: 0°C to +60°C
Ambient temperature: 0°C to +50°C
Maximum pneumatic control pressure: 8 bar
Installation & Maintenance
The RSG 780-H features a G1 (1" BSP) female threaded connection. The manufacturer recommends installation with the control plate positioned upwards wherever practical.
The pneumatic control supply must be filtered to 40 microns to support reliable operation.
Typical Applications
Industrial liquid pressure limiting
Hydraulic pressure control systems
Process liquid pressure management
Industrial machinery and equipment
Pressure control in contaminated liquid systems
Pneumatically controlled pressure limiting circuits
Technical Specification
Manufacturer: RSG Regel- und Steuergeräte GmbH
Series: 780-H
Valve Type: Manual pressure limiting valve
Control: Manual adjustment with external pneumatic control
Pressure Range: 5–120 bar
Port Connection: G1 female (1" BSP)
Nominal Diameter: DN15
Flow Rate: 6 m³/hr
Body Material: Galvanised steel
Seal Material: FKM
Suitable Media: Compatible liquids, contamination up to 50 µm
Media Temperature: 0°C to +60°C
Ambient Temperature: 0°C to +50°C
Control Air: 40 µm filtered, maximum 8 bar
Recommended Mounting: Control plate upwards
Free next day UK delivery.
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