| Sign In | Join Free | My himfr.com |
|
Shanyan Industrial (Shanghai) Co., Ltd.
Verified Supplier
2 Years
| Sign In | Join Free | My himfr.com |
|
2 Years
| Ask Lasest Price | |
| Brand Name : | Gardner Denver |
| Model Number : | 90AR923 |
| Price : | $26/pieces |
| Payment Terms : | T/T |
| Supply Ability : | 100-1000 |
| Delivery Time : | 15-20 work days |
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.
| 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 |
| 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) |
| Metric | Value |
|---|---|
| Response Time | <100ms |
| Hysteresis | <3% |
| Cycle Life | >100,000 cycles |
| Burst Pressure | 3× set pressure |
| 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 |
| 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) |
| Option | Choices |
|---|---|
| Connection | NPT, BSP, SAE, Flange |
| Material | Aluminum, SS304, SS316 |
| Seal | Viton, NBR, EPDM |
| Accessories | Pressure gauge, silencer, lockout |
✔ Tool-Free Adjustment - Field serviceable
✔ Visual Indicator - Popped status detection
✔ Test Lever - Manual operation check
✔ Spare Parts Kit - Available for all models
✅ Certified Safety - ASME/CE/PED compliant
✅ Precision Machined - Consistent performance
✅ Global Support - 24/7 technical assistance
✅ Cost Effective - 30% savings vs competitors
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?
Quansi check valves are automatic one-way flow control devices designed to prevent backflow in piping systems. These valves operate without external power, using system pressure to open and gravity/spring force to close.
| Feature | Benefit |
|---|---|
| Zero Leakage Design | Prevents backflow contamination |
| Low Cracking Pressure | From 0.1 psi (0.007 bar) |
| Fast Response | <0.5 second closing time |
| Multi-Material Options | Corrosion resistant materials |
| Compact Construction | Saves installation space |
| Parameter | Specifications |
|---|---|
| Valve Types | Swing, Lift, Dual Plate, Ball, Wafer |
| Size Range | ½" to 48" (DN15-DN1200) |
| Pressure Rating | 150# to 2500# (PN10-PN420) |
| Temperature Range | -196°C to +650°C (-320°F to +1200°F) |
| Flow Coefficient (Cv) | 5 to 10,000+ |
| End Connections | Flanged, Threaded, Wafer, Butt Weld |
| Body Materials | Cast Iron, Carbon Steel, SS304/316, Alloy 20 |
| Seat Materials | PTFE, Metal, Nylon, PEEK |
| Characteristic | Value |
|---|---|
| Cracking Pressure | 0.1-5 psi (adjustable) |
| Closing Time | 0.2-2 seconds |
| Pressure Drop | <1 psi at rated flow |
| Bubble-Tight Seal | ANSI Class VI (metal seats Class IV) |
| Cycle Life | >1 million cycles |
| Type | Swing | Lift | Dual Plate | Ball |
|---|---|---|---|---|
| Best For | Low Velocity | Vertical Flow | High Pressure | Viscous Media |
| Size Range | 2"-48" | ½"-8" | 2"-48" | ¼"-4" |
| Max Pressure | 300# | 2500# | 900# | 600# |
| Advantage | Low Cost | Tight Seal | Compact | No Water Hammer |
| Component | Standard | Optional |
|---|---|---|
| Body | CF8M (SS316) | Titanium, Hastelloy |
| Disc | SS304 | Bronze, PPS |
| Seat | PTFE | RPTFE, Metal |
| Spring | SS302 | Inconel |
| Hinge Pin | SS416 | Tungsten Carbide |
| Industry | Application | Recommended Type |
|---|---|---|
| Water Treatment | Pump Discharge | Swing/Dual Plate |
| Oil & Gas | Pipeline | Dual Plate/Lift |
| Chemical | Corrosive Media | Alloy 20 Ball |
| Power | Boiler Feed | Nozzle Check |
| HVAC | Chilled Water | Silent Check |
| Selection Criteria | Options |
|---|---|
| Connection Type | RF, RTJ, NPT, SW |
| Pressure Class | 150-2500# |
| Seat Type | Soft, Metal, Composite |
| Special Features | Non-Slam, Silent, Anti-Cav |
✔ Top Accessible - In-line maintenance
✔ Replaceable Seats - Without valve removal
✔ Visual Indicator - Flow direction marking
✔ Test Ports - For performance verification
✅ ASME B16.34 Certified
✅ API 6D & API 594 Compliant
✅ Fire-Safe Design Available
✅ 3-Year Warranty
✅ Global Stock Availability
Need help selecting? Provide:
① Fluid Type ② Temperature/Pressure ③ Connection Size
④ Flow Rate ⑤ Special Requirements
This comprehensive overview covers all technical aspects of check valves with clear parameter tables for easy specification. The product range includes solutions for virtually any industrial application requiring backflow prevention.
Would you like additional information on installation procedures or specific certifications?
|
|
