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A pneumatic relief valve is a safety device designed to protect pneumatic systems from overpressure by automatically releasing excess air when the pressure exceeds a predefined set point. These valves are essential in maintaining system integrity, preventing equipment damage, and ensuring operational safety.
Key Features
Pressure Regulation: Maintains system pressure within safe limits.
Automatic Operation: Opens when pressure exceeds the set limit and reseals when normal pressure is restored.
Material Options: Available in brass, stainless steel, or aluminum for different applications.
Adjustable or Fixed Set Pressure: Some models allow for manual adjustment.
Quick Response Time: Ensures rapid pressure relief to prevent system failure.
Typical Applications
Compressed air systems
Pneumatic cylinders & actuators
Air tanks & receivers
Industrial machinery
HVAC systems
Process control systems
Pneumatic Relief Valve Parameters Table
Parameter
Description
Typical Values
Set Pressure Range
Operating pressure range at which the valve opens
0.5 – 20 bar (7 – 290 psi)
Connection Type
Thread size & standard (e.g., NPT, BSP, G)
1/8", 1/4", 3/8", 1/2" NPT/BSP
Flow Capacity (Cv)
Flow coefficient indicating valve efficiency
0.1 – 5.0 Cv
Material
Body & seal material
Brass, Stainless Steel, Aluminum, PTFE
Temperature Range
Operating temperature limits
-20°C to +120°C (-4°F to +248°F)
Reset Pressure
Pressure at which the valve recloses (usually below set pressure)
~90% of set pressure
Leakage Rate
Maximum allowable leakage when closed
< 0.1% of rated flow
Response Time
Time taken to open fully once pressure exceeds set point
< 50 ms
Weight
Approximate valve weight
0.1 – 2 kg (0.22 – 4.4 lbs)
Certifications
Compliance with industry standards (ISO, ASME, CE, etc.)
ISO 4126, ASME, CE, PED
Selection Considerations
System Pressure: Choose a valve with a set pressure slightly above normal operating pressure.
Flow Requirements: Ensure the Cv rating matches system airflow needs.
Environmental Conditions: Consider temperature, humidity, and potential corrosive elements.
Maintenance: Some valves require periodic testing to ensure proper function.
Would you like additional details on a specific model or application?
Pneumatic Relief Valve Product Overview
A pneumatic relief valve is a safety device designed to protect pneumatic systems from overpressure by releasing excess air when the pressure exceeds a preset limit. It ensures system integrity, prevents equipment damage, and enhances operational safety.
Quick Response: Rapid opening and resealing to prevent pressure spikes.
Durable Construction: Made from corrosion-resistant materials (brass, stainless steel, or aluminum).
Adjustable or Fixed Set Pressure: Some models allow for manual adjustment.
Compact Design: Suitable for various pneumatic applications.
Applications
Compressed air systems
Pneumatic cylinders & actuators
Air tanks & receivers
Industrial machinery & automation
HVAC systems
Pneumatic Relief Valve Parameters Table
Parameter
Specifications
Type
Direct-acting, pilot-operated
Connection Type
Threaded (NPT, BSP), Flanged
Port Size
1/8" to 2" (or custom)
Pressure Range
0.5 to 300 PSI (adjustable/fixed)
Set Pressure Accuracy
±5% of set value
Max Operating Temp.
-20°C to 120°C (-4°F to 248°F)
Body Material
Brass, Stainless Steel, Aluminum
Seal Material
NBR, FKM (Viton), EPDM
Flow Capacity (Cv)
0.1 to 10 (varies by model)
Reset Pressure
Typically 90-95% of set pressure
Certifications
ISO 4126, ASME, CE, PED (if applicable)
Selection Considerations
Set Pressure: Choose based on system requirements.
Flow Rate: Ensure adequate venting capacity.
Environmental Conditions: Consider temperature & media compatibility.
Maintenance: Check for ease of cleaning/recalibration.
Would you like additional details on a specific model or application?
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
2012
Total Annual:
10000000-50000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Shanyan Industrial (Shanghai) Co., Ltd, & Quansi Industrial (Guanyun)Co.,Ltd a leading manufacturer and supplier of air compressor accessories.like Atlas, Gardner Denver,Ingersoll Rand,CompAir,Sullair,Fusheng, Kobelco,Unites,Bolete and so on. Our factory specializes in producing high-quali... Shanyan Industrial (Shanghai) Co., Ltd, & Quansi Industrial (Guanyun)Co.,Ltd a leading manufacturer and supplier of air compressor accessories.like Atlas, Gardner Denver,Ingersoll Rand,CompAir,Sullair,Fusheng, Kobelco,Unites,Bolete and so on. Our factory specializes in producing high-quali...
