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Brass NPT Check Valve 1/2" 3/4" 1" In-Line One-Way Spring Valve
Brass NPT Check Valve 1/2" 3/4" 1" In-Line One-Way Spring Valve
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NPT Brass In-Line Spring Check Valve – One-Way Flow Control for Irrigation & Aquariums
Keep your water systems flowing in the right direction with this heavy-duty Brass Female Thread In-Line Spring Check Valve. Designed for irrigation systems, aquarium setups, plumbing lines, and more, this one-way valve prevents backflow and protects your equipment from reverse pressure. Available in multiple sizes — 1/2", 3/4", 1", 2" (DN15, DN20, DN25) — to suit a wide range of applications.
Key Features
- Material: Premium brass construction for durability, corrosion resistance, and long service life
- Thread Type: NPT/BSP female thread (1/8", 1/4", 3/8", 1/2", 3/4", 1", 2" available)
- Max Working Temperature: 110°C (230°F)
- Max Pressure: 1.6 MPa (232 PSI)
- Design: In-line spring-loaded one-way valve — allows flow in one direction, automatically blocks reverse flow
- Electricity-Free Operation: Fully mechanical — no power source required
- Quantity: 1 piece per order
Applications
- Garden drip irrigation and sprinkler systems
- Aquarium and fish tank water management
- Residential and commercial plumbing lines
- Water pumps, air compressors, and fluid control systems
- Industrial and agricultural liquid handling
Specifications
| Material | Brass |
| Thread | NPT/BSP Female Thread |
| Available Sizes | 1/2", 3/4", 1", 2" (DN15, DN20, DN25) |
| Max Temperature | 110°C / 230°F |
| Max Pressure | 1.6 MPa (232 PSI) |
| Operation | Electricity-Free (Spring Mechanical) |
| Package Contents | 1x Brass Check Valve |
Made in China.
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Looking to expand your garden setup? Check out our decorative wall art for your home or explore our full range of garden and outdoor solutions to complement your irrigation system.
For guidance on best practices in irrigation and water efficiency, visit the EPA WaterSense Program — a trusted resource for water-efficient products and irrigation tips.
Frequently Asked Questions
Q: What sizes are available for this brass check valve?
A: This brass in-line check valve is available in multiple sizes including 1/2", 3/4", 1", and 2" (DN15, DN20, DN25), making it versatile for irrigation systems, aquariums, and standard plumbing connections.
Q: What is the maximum pressure this check valve can handle?
A: This brass spring check valve is rated for a maximum working pressure of 1.6 MPa (approximately 232 PSI) and a maximum working temperature of 110°C (230°F), suitable for most residential and light commercial applications.
Q: Does this valve require electricity to operate?
A: No — this is a fully mechanical, spring-loaded one-way check valve. It operates without any electricity, using internal spring tension to automatically allow forward flow and block reverse backflow.
Q: Is this valve compatible with both irrigation and aquarium systems?
A: Yes. The brass construction and standard NPT/BSP female thread design make it compatible with a wide range of systems, including garden drip irrigation, aquarium water lines, plumbing networks, and fluid control setups.
