P800 | Inline Relief Valve
BelGAS Regulators
The BelGAS P800 is a direct-operated, inline relief valve designed to protect pneumatic systems from overpressure conditions. Typically installed between a supply regulator and downstream instrumentation, the P800 limits instrument supply pressure to a safe level in the event of regulator failure.
Factory preset and tamper resistant, the P800 provides consistent and reliable protection without the need for field adjustment. Its large diaphragm area and relief seat design enable accurate response and dependable performance in critical instrument air applications.
With a compact footprint and simple inline installation, the P800 is an effective solution for safeguarding sensitive pneumatic equipment while maintaining system integrity and reliability.
Typical Applications:
Instrument air systems, pneumatic control systems, regulator protection, and pressure limiting for sensitive instrumentation
Key Features
- Direct-operated inline relief valve
- Factory preset pressure settings from 2 to 50 PSIG
- Designed to protect pneumatic instruments from overpressure
- Tamper resistant spring case for secure operation
- Large diaphragm area for accurate pressure response
- Large relief seat for effective pressure discharge
- 1/4″ NPT inlet and outlet connections
- 1/2″ NPT vent connection with removable screen
- Compact, lightweight design
- Optional pressure gauge port
PERFORMANCE ADVANTAGES
Why the P800 Performs Where It Counts
RELIABLE INSTRUMENT PROTECTION
Limits downstream pressure to protect sensitive pneumatic devices from regulator failure or pressure spikes.
FACTORY PRESET FOR CONSISTENCY
Pre-set and tamper resistant design ensures reliable operation without field adjustment.
SIMPLE INLINE INSTALLATION
Compact design allows easy integration into existing pneumatic systems with minimal modification.
FAST AND ACCURATE RESPONSE
Large diaphragm and relief seat provide quick reaction to overpressure conditions.