BS EN 13397 Diaphragm Valves, BS 5156, Ductile Iron, DN50

Product Name: BS EN 13397 Diaphragm Valves
Type: Weir Type Diaphragm Valve
Design Standard: BS EN 13397 (BS 5156)
Body Material: Ductile Iron
Size: DN50, 50 mm, 2 Inch
Pressure: PN10
End Connection: NPT Threaded

Our Unlined Screwed End Diaphragm Valve features a Weir Type design with BSPP threaded ends, making it ideal for general industrial applications. This handwheel-operated valve is constructed with a ductile iron body and bonnet, and is equipped with an EPDM or Neoprene rubber diaphragm. The valve closure is achieved through an elastic polymer diaphragm (EPDM), ensuring reliable sealing.

Designed for linear motion, this manual diaphragm valve offers a bolted bonnet and seat-less design, providing a cost-effective, easy-to-maintain solution for a wide range of applications. The bi-directional, Weir Type valve ensures excellent durability and reliability, effectively isolating the line media from the mechanical components of the valve.

Screwed End Diaphragm Valves are commonly used in chemical and water treatment industries due to their low maintenance and easy availability. They are especially preferred in the mining, mineral processing, and fertilizer industries for their ability to handle abrasive and corrosive media. The valve is fitted with a yellow position indicator for clear operational status.

Technical Specifications

» Normal Size Range: 1/2-2 Inch (DN15 to DN50)

» Valve Body Design Pressure: PN16, Class 150 LB

» Manufacturing & Design Standard: BS EN 13397 (BS 5156)

» Testing Standard: BS EN 12266-1 (6755-1)

» Face to Face Dimensions: as per Manufacturer Standard

» End Connection: Screwed to BSP (BS 21 Parallel or Taper)

» Material of Construction: Ductile Iron/Cast Iron/S.G. Iron, GGG40, ASTM A216 WCB, A351 CF8, CF8M

» Lining and Diaphragm Materials: Natural Rubber, Neoprene, Hypalon, Butyl, EPDM, Silicone, PTFE backed by EPDM or Neoprene Rubber

» Operation: Handwheel, Pneumatic, Electric

» Temperature Range: -29°C to 80°C