Full Welded Ball Valve

Size Range: DN25-DN350

Pressure: PN25

Body Materials: 20#

Seat Materials: PTFE

Stem Materials: 2Cr13



  • Full welded structure

    Full welded structure valve body, no external leakage. Compact valve structure, easy for construction and installation.

  • Imported raw materials

    Valve seat and O-ring are made of impored raw marterials. Excellent self-lubrication, low friction coefficient, high structure density and good anti-aging performance.

  • Anti blowout structure

    Anti blowout structure and the center shaft and the center shaft sealing system are replaceable.

  • Single side double seal valve seat

    Single side double seal valve seat (double side quadruple seal) greatly increases the service life of the valve.

  • Pressure test for seal and shell

    Each valve will be inspected for shell and seal pressure before leaving factory.


Suitable medium:Water, oil, gas, etc
Working temperature:-20℃~150℃
Application field:Municipal construction, central heating, gas pipelines, etc.


Parameter Information
Executive standard
Name Design and manufacture Face to face Length Pressure Test  End  Flange 
Reference standard GB/T 19672
ASME B16.34
GB/T 12221
ASME B16.10
GB/T 13927
API 598
GB/T 12224
ASME B16.25
Material of Main Parts
Name 1-Body 3-Ball 5-Seat 8-Stem 14-Actuator
Material 20# 304 PTFE 2Cr13 Handle/Worm Gear
25 1'' 230 20 25 34 81
32 1  1/4'' 260 25 32 42 83.5
40 1  1/2'' 260 32 38 48 101.5
50 2'' 300 40 48 60 129
65 2  1/2'' 300 50 60 76 155
80 3'' 300 65 73 89 169.5
100 4'' 325 80 98 114 178.5
125 5'' 325 100 125 141 194.5
150 6'' 350 125 143 159 215
200 8'' 400 150 199 219 269.5
250 10'' 560 200 253 273 305.5
300 12'' 635 250 298 325 370
350 14'' 762 300 350 377 404


Check valves, globe valves, ball valves, filters, rubber joints, etc. are commonly used pipe accessories in fluid pipelines, with functions such as cut-off, regulation, diversion, prevention of backflow, pressure regulation, diversion, or pressure relief. It is commonly used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media.


Structural characteristics of threaded valves
Jul-21,2020Industry News

Threaded connection is a simple valve connection used for small diameter valves.It is different from other connections.

How can valve corrosion be prevented?
Jul-21,2020Industry News

This article describes how to choose the right material for different valve body corrosion protection requirements.

Installation instructions for wafer butterfly valve
Jul-21,2020Industry News

We will introduce the wafer butterfly valve installation method.It is the most common type of industrial pipe valve.

What are the common valve driving modes?
Jul-21,2020Industry News

Valve drive mode has manual, pneumatic, electric and so on.We can choose the driving mode according to different needs.

Common material for flange gate valves
Jul-21,2020Industry News

Copper sealed cast steel body gate valve is certain, cast iron or cast steel body can be surfacing copper alloy, but acc

The inquiry information of handle operated butterfly valve
Jul-21,2020Industry News

Connection form: the connection form mainly has to the clamp, the flange, the clamp and so on, the different connection

Good performance of soft seal gate valve
Jul-21,2020Industry News

The body material is ductile iron, while the traditional gate valve material is usually cast iron. The soft sealing gate

Relevant policy analysis on valve industry
Jul-21,2020Industry News

Valve industry belongs to equipment manufacturing industry and is a strategic target industry providing technical equipm

The future development trend of Chinese valve
Jul-21,2020Industry News

Market competition has led to China's valve round after round of fierce competition, the development trend of the futur

Bundor professional after-sales service cases
Jul-21,2020Company News

Bundor quickly dispatched a professional technical team to the customer's engineering site to investigate the problems.

Contact us now if you have any questions about our company and products.We will retain your information completely private.


Who should we contact if there is after-sale problem?

You can send mail to info@bundorvalve.com or call us directly to Ms.Shirley. Business scopes spreads to middle China,West China,East China,South China and 76 countries &areas all over the world. We are familiar with all types of enterprises development strategy. Through reliable products and perfect services, the brand of Bundor has won extensive praise from customers.

What certificated does the factory have?

Bundor has 117 products patents and passes CE, CU-TR, API, WRAS, ISO9007, ISO18001, ISO14001, AAA credit grade certificate. Strictly in accordance with ISO, API, JIS, DIN and other standards for valve production, the factory has a perfect enterprise standardization system, has more than 80 sets of high-precision mechanical equipment and quality testing equipment. Can provide more than 10000 kinds of valve models, with a perfect computer system, with independent product research and development capabilities.

Which port is the nearest port from factory?

Bundor valve is located in jinan area, tianjin city, is a collection of scientific research, design, production, sales and after-sales service as one of the professional valve manufacturers, its main export port is tianjin port. Tianjin port is an important comprehensive port and foreign trade port in north China. After the order is confirmed, production can be arranged in 24 hours to ensure the delivery time. Bundor valve always adhere to science and technology and quality peers, dare to innovate, the pursuit of excellence.

What’s the payment terms?

T/T, L/C, D/P D/A, PayPal, Western Union, Cash, Escrow are all allowed. Bundor valve has a set of perfect international trade system. From international trade marketing promotion to international trade negotiations, the group's international trade market of Bundor has been developing steadily in developing countries and regions such as Asia, Africa and Latin America, and has successfully opened markets in developed countries and regions such as Europe and America.

Founded in 1990s, Bundor is an experienced manufacturing and trading combo specialized in the research & development, production and sales of Butterfly valve, gate valve, check valve, globe valve and other valves. 25 years adhering to the principle of manufacturing process of competent valve fittings,the control of valve manufacturing throughout all the production processes, so that "Bundor" has become the world's leading supplier of water system valve.Our team