Zhejiang Guoji Fluid Control Co., LTD

Full set of industrial valve solutions, high temperature and high pressure power station valve, hard seal ball valve butterfly valve, hydraulic control valve, knife gate valve, blind valve

Performance profile of buried ball valve:

The all-welded ball valve is a new type of energy-saving cut-off valve developed by our factory through the introduction of foreign advanced design technology and equipment. Due to the special structure of the all-welded ball valve, novel, practical, light weight and less consumables, in today’s environmental protection and energy saving economic form, it is a good energy saving and environmental protection products. When the valve is closed, the internal leakage can reach the state of “zero leakage”, which can reduce the loss caused by energy loss to a low point. Improve energy saving and fluid metering accuracy. The valve consists of a fully welded body and carbon-reinforced Teflon gasket for frequent operation and long life in the presence of impurities and chemicals. The finely polished stainless steel ball can be opened and closed freely for many years, and the operation is reliable. With the float structure, the inclined plane elasticity ensures that the sealing ring is firmly pressed on the ball, even in the case of unstable pressure, the valve can ensure tightness. It solves the “running, bubbing, dripping and leaking” of each set conveying system, which improves the security, reduces the cost of maintenance and use, and provides convenience for users.
This valve is suitable for urban heating, urban gas, natural gas pipeline, chemical, electric power, light industry, food, textile and other industries is one of the ideal cut-off valve. After years of market testing, the product quality can reach the same level as similar foreign products. Therefore, it is well received by all users.


City gas: gas output pipeline, main line and feeder supply pipeline, etc.
Central heating: large heating equipment output pipeline, main line, branch line.
Heat switch: pipe and circuit opening and closing.
Steel plant: various fluid pipelines, exhaust gas discharge pipelines, gas and heat supply pipelines, fuel supply pipelines.
All kinds of industrial equipment: all kinds of heat treatment pipes, all kinds of industrial gas and heat pipes.


Integral welded ball valve, no external leakage and other phenomena.
Because the seat is composed of carbonized Teflon ring and discspring, it is highly adaptable to pressure and temperature changes and does not produce any slippage within the labeled pressure and temperature range.
The processing of the ball has advanced computer detector tracking detection, so the processing accuracy of the ball is high.

Because the valve body material is the same as the pipe material, there will be no uneven stress, and there will be no deformation due to earthquakes and vehicles passing through the ground, and the pipeline is resistant to aging.
The sealing ring body is made of RPTFE material with 25%Carbon(carbon) to ensure complete no leakage (0%).
Directly buried welded ball valve can be directly buried in the ground, without building a large valve well, just set a small shallow well on the ground, saving construction costs and engineering time.
The length of the valve body and the height of the stem can be adjusted according to the construction and design requirements of the pipeline.
The processing precision of the ball is very precise, the operation is light, and there is no bad interference.
The use of advanced raw materials can guarantee the pressure above PN25.
Compared with the same specification products in the same industry, the valve body is small and beautiful.
Under the condition of normal operation and use of the valve, the service life is more than 15 years.

Main component materials:

Valve body: ST37

Ball core: SS304

Valve stem: 2Cr13

Seat: PTFE-C carbon fiber


Tags: MQ637F Buried loose ball valve Buried loose ball valve