Plunger Valve Manufacturer in China
Plunger valve: When the hand wheel rotates, the intermediate rod drives the column to move up and down in the guide sleeve to complete the opening and closing function of the valve. In the valve, the plunger and the sealing ring are made of over-tight fit, and the adjusting bolts of the pressure cover flange are adjusted, The lateral force generated by the compressed sealing ring is used to seal the inner surface of the valve body and the outer diameter of the plunger, thereby ensuring the sealing of the valve, preventing internal leakage, and at the same time, the valve opening torque is small, and the plunger valve can open and close quickly.
The company adheres to scientific and technological innovation as the development direction of the enterprise, and has set up a CAD valve design center, a three-dimensional simulation manufacturing design system, a valve testing center and a test platform to optimize product structure and ensure the quality and speed of new product research and development and production. Liangzheng has a strong professional after-sales service team. We have a 24-hour after-sales service hotline. We will respond immediately to the quality problems reported by buyers. After-sales service personnel will make substantive responses and rush to the scene in the shortest time.
Various Types of Our Plunger Valve

The oxygen shut-off valve is made of high-quality silicon brass or stainless steel, which has the advantages of high mechanical strength, wear resistance and good safety. Used in oxygen pipelines, it has the best anti-explosion and flame retardant performance, eliminating the unsafe factors in the oxygen pipeline.

Due to the use of new non-metallic materials for the sealing ring, the plunger globe valve has the performance of not losing elasticity after long-term high temperature and high pressure, and the contact area between the plunger and the sealing ring is large. Moreover, the sealing ring is of good mixed material performance, so the sealing is reliable and durable.
Customize Plunger Valves to Suit Your Project
The plunger valve is widely used as the opening and closing device for steam, air, and other media in various industrial pipelines, and can accurately match different industrial scene needs. The maximum working temperature can reach 350 ℃. The material and size parameters of the valve body and valve cover of the plunger valve, as well as the driving mode, can also be selected according to your industrial scene.

Your Reliable Plunger Valve Manufacturer in China


We have a 24-hour after-sales service hotline. We will respond immediately to problems reported by buyers. After-sales service personnel will make substantive responses and rush to the scene within the shortest time. To meet the needs of our customers, we provide high-quality products and professional services, with the most rigorous work style, the most advanced and safe product design, and the most favorable prices to provide our customers with first-class products.
Plunger Valve Application Scenarios

The plunger valve has the characteristics of good sealing, long service life, easy maintenance, and light operation.

In the plunger valve, the plunger and the seal are used in close cooperation. The lateral force generated by the compression of the sealing ring fits with the inner surface of the valve body and the outer circle of the plunger to ensure sealing and prevent external leakage.

Due to the use of a new type of sealing material with strong elasticity, high wear resistance, and non-toxic properties, the plunger valve has reliable sealing and a long service life, thus improving the service life of the valve.
More About Our Plunger Valve
- Technical Parameters
- Certifications
| U41SM/H-16C/P/R | ||||||||
|---|---|---|---|---|---|---|---|---|
| DN (mm) | L | H | D0 | D | D1 | D2 | b | Z-Φd |
| 15 | 130 | 170 | 100 | 95 | 65 | 45 | 14 | 4-14 |
| 20 | 150 | 190 | 100 | 105 | 75 | 55 | 14 | 4-14 |
| 25 | 160 | 200 | 120 | 115 | 85 | 65 | 14 | 4-18 |
| 32 | 180 | 230 | 140 | 135 | 100 | 78 | 16 | 4-18 |
| 40 | 200 | 260 | 160 | 145 | 110 | 85 | 16 | 4-18 |
| 50 | 230 | 280 | 180 | 160 | 125 | 100 | 16 | 4-18 |
| 65 | 290 | 300 | 200 | 180 | 145 | 120 | 18 | 4-18 |
| 80 | 310 | 370 | 240 | 195 | 160 | 135 | 20 | 8-18 |
| 100 | 350 | 400 | 270 | 215 | 180 | 155 | 20 | 8-18 |
| 125 | 400 | 420 | 310 | 245 | 210 | 185 | 22 | 8-18 |
| 150 | 480 | 510 | 340 | 280 | 240 | 210 | 24 | 8-23 |
| 200 | 495 | 590 | 400 | 335 | 295 | 265 | 26 | 12-23 |
| 250 | 622 | 710 | 520 | 405 | 355 | 320 | 30 | 12-25 |
| 300 | 698 | 830 | 640 | 460 | 410 | 375 | 30 | 12-25 |
| 350 | 787 | 950 | 760 | 520 | 470 | 435 | 34 | 16-25 |
| 400 | 914 | 1080 | 900 | 580 | 525 | 485 | 36 | 16-30 |
What Our Clients Say
The nominal pressure PN is 1.6 MPa, the working temperature is ≤350 ℃, the applicable medium is water, steam, oil products, etc, the strength test pressure is 2.4 MPa, and the sealing test pressure is 1.76 MPa.
The valve body and valve cover of the plunger valve are made of cast steel WCB; the plunger is made of A105 + ENP; the valve stem is made of stainless steel 2Cr13, and the sealing ring is made of reinforced graphite.
Explanation of the Plunger Valve
Piston valves are suitable for use as opening and closing devices for the flow of media such as steam, air, water, oil, acid, alkali, and ammonia in various industries. The maximum operating temperature can reach 350℃. It has the characteristics of good sealing, long service life, easy maintenance, and light operation. It can directly replace the use of stop valves, etc., and has a marked effect on preventing blockage, running, dripping, leaking, and saving energy.
When rotating the handwheel, the plunger is driven by the valve stem to move up and down between the two sealing rings, completing the opening and closing of the valve. When the valve leaks during long-term use, the valve should be in the closed position, then tighten the nut on the valve cover to eliminate it. If this method cannot eliminate it, a new sealing ring should be installed. This valve should not be used in areas where hot and cold are frequently alternated. The plunger valve is composed of the valve body, valve cover, valve stem, plunger, guide sleeve, sealing ring, hand wheel, and other parts.
When the hand wheel rotates, the plunger is driven by the valve stem to move up and down in the guide sleeve to complete the opening and closing function of the valve. In the valve, the plunger and the sealing ring are used in an over-tight fit, and the flange bolt in the pressure cover can be adjusted. The lateral force produced by compressing the sealing ring is used to seal the inner surface of the valve body and the outer diameter of the plunger, thus ensuring the sealing of the valve, preventing internal leakage, and at the same time, the valve can open and close quickly. Because the sealing ring adopts a new type of sealing material with strong elasticity and high wear resistance, which is non-toxic, it can withstand long-term high temperature and high pressure without losing elasticity, so the sealing performance is reliable and durable.







