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Fully Welded Body Pipeline Trunnion Mounted Ball Valve for Natural Gas Transmission and Distribution China Manufacture

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Ball valve for natural gas , API6D pipeline ball valve

Forged steel completely welded,underground valve.

The natural gas pipeline forged steel ball valve is a forged steel structure, which is especially suitable for working conditions of gas, purified natural gas, acid natural gas, water, coal slurry and oil.
It is suitable for oils with Class150~Class1500 and working temperature of -28~300°C.


Pressure rating:Class150-1500lbs

Body Forged steel



NORTECH is one of the leading China Ball valve for natural gas Manufacturer & Supplier.

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What's Ball valve for natural gas ?

Nortech Full Welded Ball Valve is developed by the engineering technical personnel from the factory with more than 30 years experience in design and manufacture of high-pressure valve and international latest technical standard.Because of the special characteristics of underground type ball valve,the capability to endure pipeline stress, safety,weather resisting property and long run reliability is fully considered when designed.

Main features of Ball valve for natural gas

 2.Corrosion Resistance and sulfide Stress Resistance

Certain corrosion allowance is reserved for the body wall thickness,in consideration of corrosion.The carbon steel stem,fixed shaft,ball,seat and seat retainer ring are subjected to chemical nickel plating according to ASME B733 and B656.In addition,various corrosion resistant materials are available for users to select.According to customers’ request,the valve materials could meet the requirements of NACE MR 0175/1S0 15156 or NACE MR 0103,and strict quality control and quality inspection should be carried out during the manufacturing process so as to fully meet the requirements in the standards and meet the service conditions in sulfurization environment.

3.Integral Valve Structure

During the manufacturing process of the fully welded pipeline ball valve,the transition pipe can be welded for the welding ends valve.The transition pipe can be provided by users or by NORTECH,as per users request. Please indicate the transition pipe diameter and length A when placing orders.

4. Stem Seal

To ensure good tightness,the 3 layers stem seal is designed to prevent leakage in different working conditions.

full welded ball valve 001
full welded ball valve 002
full welded ball valve stem seal
full welded ball valve DBB

Seat DBB

full welded ball valve DB1

Seat DIB-1

full welded ball valve DIB-2

Seat DIB-2

Technical specification of full welded ball valve

Full welded ball valves

Design and manufacturer API6D
Body Material Forged carbon steel,stainless steel,alloy steel
Nominal diameter 6"-40"(DN150-DN1000)
End connection BW,Flanged
Pressure rating 150 - 1500 LB (PN16-PN320)
Operation Lever,Gearbox,Electric,Pneumatic,Electro Hydraulic Actuator,Gas Over Oil Actuator.
Working temperature -46℃-+200℃
full welded ball valve material list

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What is the Ball valve for natural gas used for?

This kind of  Fully Welded Ball Valves  is widely utilized in petrol,oil,natural gas,gas pipeline and long-distance transport pipes.

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