Plug Valve Manufacturer

NTGD Plug Valve, Your Plug valve Expert of Proven Quality & Trustworthy Service

Plug Valve Manufacturer Based in China

NTGD plug valve, established by a team of experienced engineer in 1999, has dedicated itself to plug valve manufacturing for more than 20 years. NTGD plug valve is an ISO9001 certified company who is specialized in supplying variety of plug valve, including flange plug valve, threaded plug valve, 3 way plug valve, lubricated plug valve, eccentric plug valve, lined plug valve and sleeved plug valve. Valve material included carbon steel, stainless steel, duplex steel and alloy material.

Lubricate plug valve

Lubricated Plug Valve

Invert Pressure Balanced Lubricated Plug Valve | Invert Pressure Balanced Lubricated Doulbe Plug Valve

eccentric plug valve

Eccentric Plug Valve

Resilient Type Plug Valve | Ball Type Anticorrosive Eccentric Plug Valve

3 way plug valve

3 Way Plug Valve

3 Way Jacket Plug Valve | Thread End 3 Way Plug Valve

sleeve plug valve

Sleeve Plug Valve

Metal Sealing Sleeve Plug Valve | Soft Sealing Sleeve Plug Valve

Ask Us About Our Plug Valve

At NTGD Plug Valve, we manufacture variety of Plug valve. Request a free quote from us today!

industrial we served

Industries That We Serve

Plug valve is employed as an on-off stop valve and can provide bubble-tight closure. Plug valve is widely used in oil field exploitation, transportation and refining equipment, and also widely used in petrochemical, chemical, gas, natural gas, liquefied petroleum gas, HVAC industry and general industry.
The non lubricated plug valve with bushing is used in petrochemical, chemical and other industries, especially in the medium which is not allowed to apply lubricant.

Never Compromised on Quality

NTGD plug valve always put the quality in first. We focus on  details to ensure top quality plug valve. Our staffs are well-trained and we never compromise on quality.

NTGD equipped with many test machine and applied test for the material: PMI, hardness test, thickness test, Magnet test, Penetrate test, Ultrasonic test, Tensile test and so on.

plug valve test

Our Mission

NTGD plug valve aim to be your plug valve expert of proven quality and trustworthy partner, we continuously improve our technology and equipment to ensure us a main player in the plug valve manufacturing. NTGD always try our best to offer reliable, affordable plug valve  as well as satisfied customer service. We hope our plug valve connect the pipe as well as long term relationship between us.

Certified

As long as we estblish NTGD plug valve, we applied for ISO 9001 certificate to establish our quality system. We have been certified for more than 20 year span. 

These years NTGD plug valve get certified by ISO 45001 and ISO 14001. These management systme help us continuously improve quality. 

What is a plug valve

A plug valve, also named cock valve, can be cylindrical or conical in shape and is turned inside the valve body to control fluid flow. When a plug valve is open, one or more hollow passages are generally arranged horizontally to allow easy flow through the valve.

The two-port plug valve with an open and closed setting is the most common design. The two ports are typically on opposing sides of the valve, with one passageway flowing from inbound to outbound and the stem and handle on top. A quarter-turn valve is also used by a plug valve, which is beneficial when frequent action is required. Valve ends might be flanged, hub-style, or butt weld.

How does plug valve work

The plug valve is a kind of valve which uses the plug with through hole as the opening and closing part. The plug rotates with the valve stem to realize the opening and closing action. The plug of the plug valve is mostly cone (also cylinder). The sealing pair is matched with the conical hole surface of the valve body. Plug valve is one of the earliest used valves. It has the advantages of simple structure, small size, fast opening and closing, low fluid flow resistance, but it is difficult to process and maintain. The ordinary plug valve is sealed by the direct contact between the finished metal plug body and the valve body, so the sealing performance is poor. The opening and closing force is large, it needs a large rotating torque, and it is easy to wear. 

The main advantages of plug valve are as follows:
1. Plug valve is used for frequent operation, which can be opened and closed quickly and easily.
2. The flow resistance of plug valve is small.
3. Plug valve has the advantages of simple structure, small volume, light weight and easy maintenance.
4. It is not limited by the installation direction, and the flow direction of the medium can be arbitrary.
5. No vibration and low noise.

Plug valve can be divided into straight through type, three-way type, four-way type and so on. The straight through type controls the medium flow on the straight pipe section, and the three-way and four-way types can be used to distribute the medium and change its flow direction.

The working principle of the plug valve is that the plug rotates around the center line of the valve body, and the corresponding relationship between the opening on the cock body and the opening at both ends of the valve body is used to achieve the purpose of opening and closing.