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010203

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OUR STORY

Your Trusted Partner in Valve Solutions

NST Valve is a leading Chinese manufacturer specializing in the design, development, and production of low and middle pressure butterfly valves, tilting disc check valves, and customized industrial valves. Headquartered in Zhengzhou, Henan Province, our factory at No. 93 Huaiyang Road, Shangjie District, serves as a key manufacturer for large-size butterfly valves in China .

11

+

Years of experience
50

+

Countries and regions
5000

+

Clients
20000

+

Factory areas(m2)

hot-sale product

Double Eccentric Butterfly Valve

DOUBLE ECCENTRIC BUTTERFLY VALVE With EN1074-1 & EN1074-2 type approval certification. For use with drinking water, WRAS approved Absolute bi-directional sealing PRESSURE RATING: PN10, PN1...

Double Eccentric Butterfly Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Bi-Directional Zero Leakage AWWA C504 Butterfly Valve

Rubber-Seated Butterfly Valves to AWWA C504, designed for drink water, sea water, cooling water etc. NSF/ANSI 61 approval is available. Design is rated for B valves (max. flow velocity 1...

Bi-Directional Zero Leakage AWWA C504 Butterfly Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Bi-Directional Zero Leakage Rubber Lined Butterfly Valve

Rubber lined Butterfly Valve, internally with ebonite lining of thickness 3mm or 5mm. The typical applications of this type of butterfly valves are chemical plants, sea wate...

Bi-Directional Zero Leakage Rubber Lined Butterfly Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Bi-Directional Zero Leakage Butterfly Valve With Bypass

F5 butterfly valve with bypass This kind of butterfly valve has the unique advantages: - Keeping the main valve closed and bypass valve open. That can maintain minimum flow across the valve to av...

Bi-Directional Zero Leakage Butterfly Valve With Bypass

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Bi-Directional Zero Leakage Concentric Butterfly Valve

CONCENTRIC BUTTERFLY VALVE Used as line valves to cut off or modulate the service fluid. Typically used for drinking water, fire water, waste water, industrial water, TS...

Bi-Directional Zero Leakage Concentric Butterfly Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Triple Eccentric Metal Seated Butterfly Valve

TRIPLE ECCENTRIC BUTTERFLY VALVE METAL TO METAL HARD SEATED FACE, OR LAMINATED SEATED PRESSURE RATING: PN10, PN16, PN25, PN40, PN50, PN100, Class150, Class300, Class600 SIZE RANGE: DN200(8&rdquo...

Triple Eccentric Metal Seated Butterfly Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Bi-Directional Zero Leakage Tilting Disc Check Valve

Tilting Disc Check Valve It offers unrivaled versatility and reliability while providing a significant cost savings over the life of the valve Commonly used for pump discharge to prevent r...

Bi-Directional Zero Leakage Tilting Disc Check Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Flange type dismantling joints

Size range: DN50 to DN4000 Pressure range: PN6, PN10, PN16, PN25, PN40 and PN64, Class 150 & Class 300, or more high pressure to be designed specifically. Suitable medium: water, sea w...

Flange type dismantling joints

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Bi-Directional Zero Leakage Resilient Seated Gate Valve

Resilient-Seated Gate Valve Non-Rising Stem, brass nut type

Bi-Directional Zero Leakage Resilient Seated Gate Valve

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Large Size Ductile Iron Metal Seated Gate Valve complete with Channel Guides LG2

Metal Seated Gate Valve operated with Spur gearbox and AUMA electric actuator This type of Gate valve is in compliance with EN1171, DIN 3204 F4/BS 5163&EN558-1 series 3 designed for dri...

Large Size Ductile Iron Metal Seated Gate Valve complete with Channel Guides LG2

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Air Valve triple function nonslam

Combination Air Release Valve Anti-shock / onslam

Air Valve triple function nonslam

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

Double Orifice Air Release Valve Triple fucntion

Combination Air Release Valve which is self-operating float type and can be fitted to any peak on a pipeline, capable of fulfilling the venting requirement of the pipeline and release any air...

Double Orifice Air Release Valve Triple fucntion

temperature -196~+200'c |vacuum 10 pa radiation resistance 10 Gy flange frame 28/42/57/86mm · holding torque 0.04~4.4Nm resolverfeedback ·safety brake · modified shaft

010203

Double Eccentric Butterfly Valve

DOUBLE ECCENTRIC BUTTERFLY VALVE With EN1074-1 & EN1074-2 type approval certification. For use with drinking water, WRAS approved Absolute bi-directional sealing PRESSURE RATING: PN10, PN1...

Get Your solution

Bi-Directional Zero Leakage AWWA C504 Butterfly Valve

Rubber-Seated Butterfly Valves to AWWA C504, designed for drink water, sea water, cooling water etc. NSF/ANSI 61 approval is available. Design is rated for B valves (max. flow velocity 1...

Get Your solution

Bi-Directional Zero Leakage Rubber Lined Butterfly Valve

Rubber lined Butterfly Valve, internally with ebonite lining of thickness 3mm or 5mm. The typical applications of this type of butterfly valves are chemical plants, sea wate...

Get Your solution

Bi-Directional Zero Leakage Butterfly Valve With Bypass

F5 butterfly valve with bypass This kind of butterfly valve has the unique advantages: - Keeping the main valve closed and bypass valve open. That can maintain minimum flow across the valve to av...

Get Your solution

Bi-Directional Zero Leakage Concentric Butterfly Valve

CONCENTRIC BUTTERFLY VALVE Used as line valves to cut off or modulate the service fluid. Typically used for drinking water, fire water, waste water, industrial water, TS...

Get Your solution

Triple Eccentric Metal Seated Butterfly Valve

TRIPLE ECCENTRIC BUTTERFLY VALVE METAL TO METAL HARD SEATED FACE, OR LAMINATED SEATED PRESSURE RATING: PN10, PN16, PN25, PN40, PN50, PN100, Class150, Class300, Class600 SIZE RANGE: DN200(8&rdquo...

Get Your solution

Bi-Directional Zero Leakage Tilting Disc Check Valve

Tilting Disc Check Valve It offers unrivaled versatility and reliability while providing a significant cost savings over the life of the valve Commonly used for pump discharge to prevent r...

Get Your solution

Flange type dismantling joints

Size range: DN50 to DN4000 Pressure range: PN6, PN10, PN16, PN25, PN40 and PN64, Class 150 & Class 300, or more high pressure to be designed specifically. Suitable medium: water, sea w...

Get Your solution

Bi-Directional Zero Leakage Resilient Seated Gate Valve

Resilient-Seated Gate Valve Non-Rising Stem, brass nut type

Get Your solution

Large Size Ductile Iron Metal Seated Gate Valve complete with Channel Guides LG2

Metal Seated Gate Valve operated with Spur gearbox and AUMA electric actuator This type of Gate valve is in compliance with EN1171, DIN 3204 F4/BS 5163&EN558-1 series 3 designed for dri...

Get Your solution

Air Valve triple function nonslam

Combination Air Release Valve Anti-shock / onslam

Get Your solution

Double Orifice Air Release Valve Triple fucntion

Combination Air Release Valve which is self-operating float type and can be fitted to any peak on a pipeline, capable of fulfilling the venting requirement of the pipeline and release any air...

Get Your solution

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Butterfly Valve

Check Valve

Dismantling Joint

Gate Valve

Air Release Valve

Why Us？

Technical Excellence
Certified Compliance
Customer-Centric Approach

Technical Excellence

Our valves are engineered to withstand extreme conditions, with low maintenance requirements and long service life.

Certified Compliance

All products meet international standards, ensuring seamless integration into global projects.

Customer-Centric Approach

We collaborate closely with clients to deliver customized solutions, supported by prompt after-sales service.

Industry Applications

Raw Water

Potable Water / Drinking Water

Treated Sewage Effluent ("TSE")

Sea Water

Sewage/Waste Water

Circulating cooling water

REWARDS & ACHIEVEMENTS

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How to Quickly Install and Commission a Butterfly Valve on Site

Nov 03, 2025

How to Quickly Install and Commission a Butterfly Valve on Site

Learn the step-by-step process to install and commission butterfly valves efficiently — ensuring smooth operation and reliable performance on site.

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NDT Methods

Metal flaw detection refers to the process of identifying internal and surface defects in metallic materials without damaging the tested object. This is achieved by utilising changes in thermal, acoustic, electrical, or magnetic responses caused by structural anomalies or defects within the material. The method enables the determination of defect type, nature, and distribution. Commonly employed techniques include: X-ray radiography, ultrasonic testing, magnetic particle inspection, penetrant testing, eddy current testing, and similar approaches.

How Global Water Treatment Growth Drives Valve Demand

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How Global Water Treatment Growth Drives Valve Demand

As the world invests more in water treatment, valve demand surges. Discover how this growth shapes technology, sustainability, and market trends.