Concentric Type Butterfly Valve PTFE Seated 150LB

- Nov 17, 2019-

ZFV 150# Wafer type Concentric type Butterfly valve PTFE seated have finished and packed.  


Below is detail data for the concentric butterfly valve:

Size NPS 4’’, using pressure 16Bar, connecting size ANSI B16.5 flanged raised face class 150, concentric consturction. Manual lockable lever operated. The body material carbon steel, disc material bronze, stem Monel, seat PTFE.


The techinical standards as below:

API609 for design and manufactured , API609 Cat. A for face to face dimension , ANSI B16.5 for end flanges drilling, API598 for test and  inspection. ANSI B16.34 for pressure and temperature.


Two layers systems painting : prime coating and finishing coating, which is general standard of factory. Outside of body coating color with blue.

Coating dry film thickness as per MFR’s STD.

Coating color and thickness can be made as per request.


The butterfly valve was carried out hydro testing as per API598 strictly, no visual leakage found during hydro testing and air testing.

The detail value of testing pressure as below :

3.0Mpa by hydrostatic ( water ) for shell testing.

2.2Mpa by hydrostatic ( water ) for high pressure seat testing.

0.6Mpa by air for low pressure seat testing.

The valve can be open and close smoothly under pressure, valve function is ok.


ZFV ( Zhejiang zhengfeng valve co., ltd ) is a professional butterfly valve manufacturer, have different constuct valves with standards include API, DIN, JIS. GOST, EN, ISO, GB and so on, to meet different requirements of customer over the world.



PTFE seated buterfly valve1 201907241711448859518[1]


Zhejiang Zhengfeng Valve Co., Ltd