FLAGE TYPE BUTTERFLY VALVE
A. FLAGE TYPE BUTTERFLY VALVE CHARACTERISTICS AND USAHE
The open-close piece of the valve is a round-disk butterfly board, and by rotating around the axis of its own inside the valve body, carries out the open-close or adjusting function. It features by:
1, simple structure, small volume and light weight
2, quick open-close, labor saving and small fluid resistance
3, good adjustable performance, can be adjusted flexibly within 0~900, suitable for the pipeline of water supply and drainage, high buildings, fire-fighting, petroleum, chemical industry, medicine, food industries etc. to act as open-close or adjustment.

B. FLAGE TYPE BUTTERFLY VALVE PRODUCT MANUFACTURE AND ACCEPTANCE STANDARDS
  1. Standards of design: JB/T8527, API1609, JIS B2064
  2. Standard of flange: GB4216, GB9115
  3. Structural length: GB12221, GB/T15188.2
  4. Testing standards: GB/T13927, JB/T9092

C. FLAGE TYPE BUTTERFLY VALVE MAIN TECHNICAL PARAMETER
DN(mm) 50~3000
PN(MPa) 0.25 0.6 1.0 1.6
Test  pressure
(MPa)
Shell test 0.375 0.9 1.5 2.4
Sealing performance 0.275 0.66 1.1 1.76
Applicable medium Water、 Steam、 Oil、 Sea-water、Nitric acid
Working temperature(℃) Sealing face  material X Rubber J NBR Ethylene-propylene rubber PTFE Silicon rubber Flu rubber
Working temperature 0~+60 -20~+80 -40~+150 -40~+200 -70~+250 -15~+250

D. FLAGE TYPE BUTTERFLY VALVE MATERIAL FOR MAIN PARTE
Name of parts Material
Body C.l, Ductile iron, No25A, WCB, Stainless steel
Butterfly board C.l, Ductile iron, No25A, WCB, Stainless steel
Stem Grade , WCB, Stainless steel
Sealing face Neoprene, NBR, EPOM, PTFE
Packing PTFE , Flexible granite, NBR, V washer

The technical data subject to amend without notice