ITT Engineered Valves
Pure-Flo 903 Cast Iron Manual Diaphragm Valve
The 903 is an economical option for applications that do not require autoclavability, and a selection of coatings makes it suitable for a range of sanitary service. It uses a coated cast iron bonnet with a rising-stem handwheel, adjustable travel stop, visual position indicator and O-ring seals, and is offered as the sealed 903S. The diaphragm isolates the working parts from the process, and the top-entry design allows in-line maintenance.
Ratings
| Size Range | 0.5–4" (DN15–DN100) |
|---|---|
| Max Service Pressure | 0.5–1": 200 psig (13.8 bar); 1.5–2": 175 psig (12.1 bar); 3–4": 150 psig (10.3 bar) |
Materials
| Body | 316L Stainless Alloy |
|---|---|
| Diaphragm | PTFE and elastomer (EPDM, Buna N, Butyl) |
| Bonnet | Cast iron with coating (atmospheric white epoxy and PVDF) |
| Handwheel | Glass reinforced polyarylsulfane (PAS) coated to match bonnet 0.5–1" (DN15–DN25); cast iron with coating 1.5–4" (DN40–DN100) |
Design & Features
| Bonnet / Operation | Manual rising-stem handwheel with adjustable travel stop; sealed bonnet option (903S) |
|---|---|
| End Connections | Hygienic clamp ends; 14, 16, 18, 20 O.D. gauge tubing; ISO, SMS 1146 and DIN 11850 ends |
| Key Features | Top-entry in-line maintenance; diaphragm and weir assure positive closure; visual position indicator; O-ring seals; cast iron or zinc compressor |
Applications
| Services | Sanitary service; resists alcohol and most semi-caustic washdowns |
|---|---|
| Industries | Pharmaceutical, Bioprocessing, Fine Chemical |
