Airtac NRV Non-Return Valve NRV25
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2、Prevents backflow phenomena caused by pressure decay in air supply systems or excessive consumption-induced pressure drops;
3、Features a large effective flow area for optimized pneumatic performance;
4、Incorporates injection-molded POM valve core and elastomer-sealed orifice, engineered with compact construction for reliability.
Category: Check Valves
Brand: AIRTAC
Series: NRV
AirTAC NRV Series Check Valve NRV25 Technical Specifications
- Model: NRV25
- Type: Inline spring-loaded poppet check valve
- Port size: PT1/4 (G1/4 optional)
- Operating pressure: 0.05–1.0 MPa
- Cracking pressure: 0.02 MPa (minimum)
- Flow capacity: 1,200 L/min (ANR)
- Body material: Brass (nickel-plated)
- Seal material: NBR (HNBR optional)
- Temperature range: -10℃ to 80℃ (NBR) / -20℃ to 100℃ (HNBR)
- Weight: 120g ±5%
- Dimensions: 52mm(L) × 25mm(OD) × 25mm(H)
- Installation orientation: Uni-directional (arrow marking)
- Max backflow leakage: <5 bubbles/min (ISO 6953-1 test)
- Vibration resistance: 10–55Hz, 1.5mm amplitude
High-flow non-return valve with precision-machined brass body and low cracking pressure design. Features dual-seal structure (primary poppet + secondary O-ring) for zero-leakage performance. The internal spring is pre-calibrated for 50,000+ cycle durability. Requires directional installation per flow arrow marking.
- Air compressor outlet protection systems
- Vacuum pump anti-backflow circuits
- Pneumatic cylinder load-holding safety devices
- Hydraulic accumulator isolation (oil-resistant seals required)
- Medical gas distribution systems
Maintenance tip:
Install upstream filter (25μm recommended) and perform annual seal inspection.
For vertical mounting, ensure flow direction matches gravity orientation.
Do not disassemble spring chamber - factory preload is non-adjustable.
| Property | Property Value |
|---|---|
| sku | NRV25 |
| Port | PT 1/8 |
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.