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3PC Floating Welded Ball Valve

The ball valve is widely used in China, and is not small in the fields of chemical industry, water conservancy, power, steel, oil refining and other industries. The ball valve is mainly used to cut, distribute and change the flow direction of the medium in the pipeline. It only needs to be rotated by 90 ° and a small turning moment to close the valve. There are more types of ball valves.
Product Details

About Us

Zhejiang Naibang Valve CO., LTD, Founded in 2000, is a professional valve manufacturer integrating design, technical development, produce and sale service, has a solid strength and rich production experience.

The main product are wafer check valves, ball valves, gate valves, globe valves, forged steel valves, and have obtained ISO9001 , API 6D , CE Certificate and TS management system certifications.

3PC Floatting Welded Ball Valve 


Bolted bonnet ;Three-Piece 


1)Ball Valve is not only own with the functions of opening quickly, easy to maintain, good sealing but also safety fire-safe and Antistatic designs. Lung Yun manufactures designs various kinds of ball valves for one-piece, two-piece, three-piece, thread end, socket weld end, butt weld end, flange type, full port, reduce port. The selection of ball valve material includes stainless steel, carbon steel, and cast iron. The working pressure from 1000 psi to 6000 psi application of you chose. Designs of different sealing are as client's requirement. Chose the suitable ball valve to use in piping system, Lung Yun is the best supplier.


2)It will not be stuck in operation, and can be reliably applied to corrosive medium and low-boiling liquid even in the absence of lubricant. A complete seal can also be achieved over a wide range of pressures and temperatures;3. can be quickly opened and closed, has compact structure and light weight, and can be considered as the most reasonable valve structure for a low-temperature medium system; in particular, that structure of the welded valve body can well bear the stress from the pipeline; the ball valve of the fully welded valve body can be directly buried in the underground, so that the inner part of the valve is not corroded, the maximum service life can be up to 30 years, and the valve is the most ideal valve for petroleum and natural gas pipes.


According to ANSI/ASTM

Boay:WCB 304(L) 316(L) A105 LF2 F5 F11 F2 

Ball:304 316

Trim: 304 316 304L 316L 


Inspection & Testing:API598 ,GB/T13927,JB/T9092

Thread Acc:ANSI B1.20.1 BS 21,DIN 2999 ,ISO 7-1

Design: ASME B16.34/BS 5351
Face to Face: Manufacturer Standard
Screwed End: ASME B1.20.1
SW, BW, End: ASME B16.11

We welcome all the world customers to contact us for more cooperation.

With our years of technical knowledge and experience, we assure you,

Naibang will be one of your best parters in China.

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