Wafer Rubber‑Lined Butterfly Valves
Overview:
These wafer rubber‑lined butterfly valves are general‑purpose ductile‑iron valves designed for water and industrial service.
The rubber EPDM liner is securely bonded onto a rigid backing, preventing seat distortion and lowering sealing torque.
This construction enables on‑site repair of the sealing liner without removing the whole valve from the pipeline.
Working pressure covers PN10 / PN16, operating temperature from 0 °C up to 120 °C, with nominal sizes ranging DN50‑DN600.
Manufactured in accordance with BS5155, SABS 1123 and BS4504 standards, this series is widely used for municipal water networks and general industrial piping systems.
Key Features:
- Wafer‑style body design for compact installation between pipe flanges
- Ductile cast‑iron body with FBE fusion‑bonded epoxy anti‑corrosion coating
- Stainless steel 316 disc; EPDM rubber bonded liner for reliable sealing performance
- Low sealing torque reduces driving force requirement for manual or actuated operation
- On‑site field‑repairable rubber liner, convenient for pipeline maintenance
- Available shaft configurations: 2‑stub shafts, pinned shafts & pinless shafts
- Optional nickel‑plated ductile‑iron discs or nitrile liners for special working media
- Standard factory hydro‑test: valve body tested at 1.5 times nominal pressure
- Size scope DN50‑DN600; DN450‑DN600 fitted with 2‑stage worm gear as standard
- Suitable for potable water and general‑purpose industrial fluid applications
