This Ductile Iron Diaphragm Valve is a Weir Type valve designed to meet BS 5156 and MSS SP-88 standards. It features a durable rubber diaphragm and is available in a 1-1/2 inch, DN40 size with Class 125 LB and PN16 ratings. The valve is equipped with FF flanged ends, ensuring secure and reliable connections.
Product Name: Ductile Iron Diaphragm Valve
Type: Weir Type Diaphragm Valve
Design Standard: BS 5156, MSS SP-88
Body Material: Ductile Iron
Diaphragm Material: Rubber
Size: 1-1/2 Inch, DN40
Pressure: Class 125 LB, PN16
End Connection: FF Flanged
Weir Type Rubber Lined Diaphragm Valve is manufactured in compliance with international standards. Since the flowing media does not come into direct contact with the working components of the weir-type diaphragm valve, its overall service life is significantly extended. The valve is equipped with a self-draining function to ensure the removal of residue, promoting a cleaner and healthier pipeline. The valve body is available in various materials, including cast iron, ductile iron, and cast steel. Lining materials include glass, ETFE, PFA, PVDF, and Halar rubber, and can be specially processed based on specific requirements.
Technical Specifications
Size Range: 3/4–16 Inch (DN20–DN400)
Normal Pressure Rating: PN10, PN16, Class 125 LB, Class 150 LB
Design & Manufacture: BS 5156-85, MSS SP-88, GB 12239-89
Face to Face Dimension: BS 5156-85, ANSI B16.10, GB 12221-85, DIN 3202
Flanged Dimension: BS, DIN PN10 & 16, JIS 10K, ANSI B16.5 Class 125 & 150 LB
Inspection & Testing: BS 5156, MSS SP-82, GB/T 13927
Face to Face: EN 558-1, BS 5156, DIN 3202 Series F1
Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Duplex Stainless Steel, ASTM A216 WCB, A351 CF8, CF8M
Lining: Hard Rubber (Ebonite), Natural Rubber, Neoprene, Hypalon, Butyl, EPDM, FEP, PFA
Diaphragms: Natural Rubber, Neoprene, Hypalon, Butyl, EPDM, Silicone, PTFE backed by Neoprene Rubber
Stem/Spindle: AISI 410, 304, 316
Operation: Handwheel, Pneumatic, Electric
Temperature Range: -29°C to 80°C
Handwheel: Ductile Iron, Aluminum Alloy
Main Material
Item No |
Part Name |
Material |
1 |
Body |
Cast Iron, Carbon Steel, Stainless Steel |
2 |
Bonnet |
Cast Iron, Carbon Steel, Stainless Steel |
3 |
Lining |
Rubber lining and fluorine lining |
4 |
Diaphragm |
Rubber |
5 |
Disc |
Cast Iron, Carbon Steel |
6 |
Stem |
Carbon Steel, Stainless Steel |
7 |
Handweel |
Cast Iron |