Threaded Spring Lift Check Valve

Product Overview
The Threaded Spring Lift Check Valve is a compact spring-powered one-way control valve designed specifically for small-bore threaded pipeline systems. Different from gravity swing check valves that rely entirely on fluid weight for closing, this spring lift type check valve utilizes built-in spring elasticity to drive vertical valve core reset, achieving active and rapid shutoff regardless of flow direction and installation angle.
Featuring standard internal thread connection, the valve enables fast tool-type installation without flanges or welding. The vertical lift structure eliminates swing deviation and jamming issues, while the spring buffering mechanism effectively suppresses water hammer and pipeline noise. Made of high-grade stainless steel, this valve delivers stable sealing, anti-corrosion and fatigue-resistant performance, making it an ideal solution for residential plumbing, mechanical equipment pipelines and light industrial circulating systems requiring quiet and reliable anti-backflow control.
Key Features & Product Advantages
•Dual Installation Adaptability — Unique spring-assisted lifting structure supports both vertical and horizontal pipeline installation. No need to adjust valve direction according to pipe layout, greatly improving on-site construction flexibility compared with traditional swing check valves.
•Active Spring Fast Shutoff — Built-in high-elastic stainless steel spring provides automatic reset force. The valve core closes instantly once fluid pressure drops, effectively avoiding delayed closing and medium backflow common in gravity check valves.
•Silent Anti-Water Hammer Performance — Spring buffer structure softens closing impact force, eliminating pipeline vibration, water hammer shock and operating noise. It is highly suitable for noise-sensitive indoor and equipment supporting pipelines.
•Fast Threaded Installation — Standard NPT/BSP internal thread design allows direct screwing connection. The compact integrated structure requires no extra accessories, saving installation space and construction time for small-caliber pipe networks.
•Anti-Jamming Vertical Lift Structure — The valve core moves vertically along a fixed axis without swing deviation or eccentric wear. The streamlined flow channel prevents impurity accumulation and scale blockage for long-term stable operation.
•High Hygienic & Corrosion Resistance — Full stainless steel body features smooth inner wall, no rust, no scaling and no medium contamination. It meets drinking water standards and adapts to water, oil and weak corrosive media.
•Low Flow Resistance Design — Optimized vertical straight-through flow channel reduces fluid pressure loss. The valve core lifts sensitively under low water pressure, ensuring smooth circulation of weak-flow pipelines.
•Excellent Fatigue Resistance — The precision spring undergoes special anti-fatigue treatment, maintaining stable elasticity after millions of opening and closing cycles. It avoids spring failure and ensures long service life.
•No Leakage Sealing Performance — Precision-fitted valve core and valve seat form a tight sealing pair. It achieves reliable bidirectional no leakage under rated pressure, fully protecting pipeline and terminal equipment.
Technical Specifications
•Product Name: Threaded Spring Lift Check Valve
•Material: Stainless Steel 304 / 316
•Connection Type: Internal Thread (BSP / NPT)
•Pressure Grade: PN16, PN25
•Applicable Medium: Tap water, purified water, light oil, gas, weak corrosive liquid
•Size Range: 1/2” ~ 2” (DN15 ~ DN50)
•Working Temperature: -20℃ ~ 100℃
•Operation Principle: Spring-loaded vertical lift reset
•Installation Mode: Vertical / Horizontal Optional
Application Scenarios
This threaded spring lift check valve is widely used in small-bore pipeline systems that require multi-angle installation, silent operation and sensitive anti-backflow protection:
Indoor Residential Plumbing Systems — Perfect for household water heaters, water supply branch pipes and floor heating circulation pipelines. It eliminates water hammer noise and prevents water backflow and cross-contamination.
Mechanical & Equipment Supporting Pipelines — Applied in cooling circulation systems, hydraulic pipelines and air compressor equipment. Compact threaded structure adapts to narrow internal equipment space and protects precision components from backflow impact.
Light Industrial Circulation Pipes — Suitable for small water treatment devices, laboratory fluid pipelines and food processing auxiliary water systems, ensuring clean and stable one-way fluid transmission.
Commercial Building Water Systems — Used for office and hotel indoor small-caliber water supply and circulation pipelines, providing quiet and stable pipeline protection for high-standard indoor environments.
Small-Scale Municipal & Civil Facilities — Ideal for small pump matching pipelines, landscape water systems and irrigation branch pipes, realizing automatic one-way flow control and pump protection.
Why Choose ZTE VALVE Threaded Spring Lift Check Valve
ZTE VALVE specializes in high-precision small-bore pipeline control valves. Every threaded spring lift check valve undergoes strict thread precision inspection, spring fatigue testing and full-pressure sealing testing before delivery. We optimize the spring elastic coefficient and vertical concentricity structure to solve common problems such as insensitive reset, jamming and noisy closing of traditional threaded check valves. With versatile installation performance, cost-effective pricing and stable quality, our products are widely trusted by equipment manufacturers, plumbing contractors and global valve distributors.