The EN Butterfly Valve is a kind of valve that opens and closes according to the rotary valve stem and simultaneously drives the disc rotation. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates around the axis, mainly by rotating the disc to 90°. Flow control, when the disc reaches 90 °, the valve is fully open, and the angle of the disc can be changed to adjust the medium flow, generally installed in the diameter direction of the pipeline.
* Model : DN250
* Pressure Rate : PN16
* Connection : Wafer
* Operation : bare shaft with top flange
* Torque : 960/N.m
* Cv figure in full open position : 2500
* Origin : Wenzhou
* Application : Industy
* Material : body material A216 WCB,
disc material A351 CF8,
seal material laminated SS+graphite.
stem material 17-4PH
* Standard : ISO standard
Butterfly valve fields of application
-Water systems such as water treatment plants, distribution networks, potable water applications;
-Sewage systems such as sewage treatment plants, raw water, digested sewage,air applications ; -Industrial systems such as chemical contaminated waste water, gases, industrial media
-Food & Beverage systems such as washing and rinsing applications, conveying systems, potable water processing.
1) EN Butterfly Valve has a simple structure, small size and light weight, and is suitable for large diameter.
2) The fluid resistance is small. When fully open, the valve seat passage has a large effective flow area, and thus the fluid resistance is small.
3) The opening and closing is convenient and rapid, the adjustment performance is good, and the butterfly plate rotates 90. Can open and close. The flow rate can be controlled hierarchically by changing the angle of rotation of the disc.
4) The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically equal by the medium, and the torque is generated in the opposite direction, so the opening and closing is relatively labor-saving.
5) EN Butterfly Valve has good low-pressure sealing performance. The sealing surface material is generally made of rubber and plastic, so the sealing performance is good. Limited by the material of the seal ring, the butterfly valve has a lower operating pressure and operating temperature range. However, the use pressure and operating temperature range of the hard seal butterfly valve have been greatly improved.
Zhenfeng is one of the professional butterfly valve manufacturers. We produce high quality flange butterfly valves, wafer end butterfly valves, lug butterfly valves, butt welding butterfly valves.
- Available manufacturing standards include API, DIN, JIS, GOST, EN, ISO, GB, etc. Special standard valves can also be produced according to customer orders.
- Available pressure rates include 150 - 1500, PN6 - PN150
- Available sizes from 2" to 80", DN50 - DN2000.
- Available materials include carbon steel, stainless steel, alloy steel, and the like.