Cast Iron Diaphragm Valve

A cast iron diaphragm valve uses a flexible diaphragm to isolate or regulate flow without a conventional packing gland or stem seal in the flow path. Cast Iron Diaphragm Valve Suppliers in South Africa can provide these valves for water, wastewater, chemical and general industrial services where reliable shut-off and simple maintenance are required. African Valve supplies cast iron diaphragm valves with manual, electric and pneumatic actuation options.

Materials & Components

• Body: Cast Iron

• Bonnet: Cast Iron

• Diaphragm: EPDM / NBR / Viton (FKM) / PTFE-Faced

• Compressor: Cast Iron / Ductile Iron

• Stem: Stainless Steel

• Operating Handwheel: Cast Iron / Ductile Iron

• Fasteners: Carbon Steel / Stainless Steel

• Lining: Rubber / PTFE, where specified

Applications in South Africa

Cast iron diaphragm valves are suitable for municipal water treatment, wastewater and effluent plants, chemical dosing, pulp and paper, mining-water systems and industrial utility lines, particularly where clean isolation and easy diaphragm replacement are required.

Standards

Applicable requirements include EN 12266, API 598, EN 558, ISO 5752, EN 1092-1 and ASME B16.5, according to valve configuration.