Diaphragm Valve
Aarya Sales supplies diaphragm valves in India, designed for accurate flow control and leak-tight shut-off in various industrial applications. These valves use a flexible diaphragm that moves against a seat within the valve body to open, close, or regulate flow.
The diaphragm acts as a pressure-responsive element, ensuring effective sealing and isolating the working fluid from internal components, making these valves ideal for handling corrosive, abrasive, or sensitive media.
Sourced from trusted manufacturers, diaphragm valves are widely used in water treatment, chemical processing, pharmaceuticals, and food industries, offering reliable performance, corrosion resistance, and low maintenance.
Diaphragm Valve Supplier in India — Aarya Sales
Diaphragm valves use a flexible rubber or PTFE diaphragm to control flow — completely isolating the actuating mechanism from the process fluid. This makes them ideal for corrosive, abrasive, viscous, or sterile fluids where zero leakage and contamination are critical. Aarya Sales supplies diaphragm valves in sizes 6 NB to 300 NB, pressure ratings up to 10 bar.
Body materials: Cast Iron, Carbon Steel, SS 304/316, CPVC, PP, PVDF, and lined variants (rubber, PTFE, PFA). Diaphragm materials: Natural Rubber, EPDM, Neoprene, Buna-N, Butyl, and PTFE for temperature up to 150°C. Weir-type and full-bore (straight-through) designs available. Standards: BS 5156, DIN 3394, IS 3359. Applications: pharma, chemical processing, food & beverage, water treatment, and slurry handling.
Frequently Asked Questions
A diaphragm valve uses a flexible diaphragm pressed against a weir (raised seat) or pulled away from the body bore to stop or allow flow. The diaphragm physically separates the stem and actuating mechanism from the process fluid, providing zero leakage and contamination-free operation — critical for pharmaceutical and food applications.
Weir-type (standard) diaphragm valves have a raised centre rib (weir) that the diaphragm seats against — easier to seal, requires less diaphragm travel, lower actuating force, suitable for most applications. Straight-through (full-bore) diaphragm valves have no weir — the diaphragm stretches fully across the bore, providing unrestricted flow with no dead pockets, ideal for viscous, slurry, or fibre-containing fluids.
Natural Rubber for general water/low-pressure service; EPDM for hot water, steam (up to 120°C), and dilute acids/alkalis; Neoprene for oil resistance; Butyl for concentrated acids; PTFE-overlay for aggressive chemical service up to 150°C and pharmaceutical (USP Class VI compliant) applications.
Diaphragm valves are available from 6 NB (¼") to 300 NB (12") in flanged, screwed, socket, and tri-clamp (sanitary) end connections. Maximum working pressure: 10 bar for standard designs; up to 16 bar for heavy-duty CS/SS body types.
Yes. Sanitary diaphragm valves with electro-polished SS 316L bodies, PTFE or EPDM USP Class VI diaphragms, and tri-clamp connections meet FDA, GMP, and 3-A Dairy Standards. They are widely used in WFI systems, CIP/SIP piping, fermentation, and aseptic filling lines.
Yes. Full-bore (straight-through) diaphragm valves with heavy-duty rubber diaphragms and rubber-lined bodies are specifically designed for slurry, pulp, and abrasive fluid service where other valve types suffer rapid wear. They are used in mineral processing, paper mills, and effluent treatment plants.