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The Quansi Pneumatic Relief Valve is a precision-engineered safety device designed to protect compressed air systems from overpressure conditions. These valves automatically release excess pressure when system limits are exceeded, preventing equipment damage and ensuring operational safety.
2. Key Features & Benefits
Feature
Benefit
Precise Pressure Control
±2% set pressure accuracy
Quick Response
<0.1 second activation time
Corrosion-Resistant
Anodized aluminum/stainless steel construction
Low Maintenance
Self-cleaning seat design
Compact Design
Saves installation space
3. Technical Specifications
Parameter
Specification
Model Series
QPRV-2024
Size Range
1/4" to 1" NPT/BSP
Pressure Range
15-300 psi (1-20 bar) adjustable
Temperature Range
-20°C to +120°C (-4°F to 248°F)
Flow Capacity
5-150 SCFM (Cv 0.5-15)
Leakage Rate
<0.1% at 90% set pressure
Reset Pressure
90% of set pressure (standard)
Body Material
Aluminum alloy (SS316 optional)
Seal Material
Viton® (NBR optional)
4. Performance Data
Metric
Value
Response Time
<100ms
Hysteresis
<3%
Cycle Life
>100,000 cycles
Burst Pressure
3× set pressure
5. Type Comparison Table
Type
QPRV-B
QPRV-P
QPRV-S
Actuation
Balanced
Pilot
Smart
Accuracy
±3%
±2%
±1%
Max Pressure
150 psi
300 psi
300 psi
Connection
NPT
BSP
Flange
Special Feature
-
Remote sense
Digital display
6. Application Matrix
Industry
Typical Use
Recommended Model
Manufacturing
Air receivers
QPRV-B
Transportation
Brake systems
QPRV-P
Energy
Gas boosters
QPRV-S
Medical
O2 systems
QPRV-SS (316L)
Food & Beverage
Processing lines
QPRV-S (FDA)
7. Ordering Information
Option
Choices
Connection
NPT, BSP, SAE, Flange
Material
Aluminum, SS304, SS316
Seal
Viton, NBR, EPDM
Accessories
Pressure gauge, silencer, lockout
8. Maintenance Features
✔ Tool-Free Adjustment - Field serviceable ✔ Visual Indicator - Popped status detection ✔ Test Lever - Manual operation check ✔ Spare Parts Kit - Available for all models
9. Why Choose Quansi Relief Valves?
✅ Certified Safety - ASME/CE/PED compliant ✅ Precision Machined - Consistent performance ✅ Global Support - 24/7 technical assistance ✅ Cost Effective - 30% savings vs competitors
10. Installation Guide
Install vertically with arrow matching flow direction
Set pressure using calibrated gauge
Secure with proper thread sealant
Test at 110% set pressure
Tag with set pressure information
Need custom pressure settings or special materials? Our engineering team can provide:
Explosion-proof versions
High-temperature adaptations
Custom flow capacities
This product overview provides complete technical details while maintaining clarity. The Quansi Pneumatic Relief Valve delivers reliable overpressure protection with industry-leading response times and durability.
Request a quotation with your specific requirements: [Pressure Range] • [Connection Type] • [Material Preference] • [Qty Needed]
Would you like to add performance graphs or certification documents to this overview?
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:
Site Member
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...