Diaphragm valves offer many body and elastomeric diaphragm material combinations. The valve design is abrasion-resistant and non-clogging. When the diaphragm, which is connected to the stem of the valve by a compressor, is pulled away from the bottom of the valve body or weir, the path of the fluid has a smooth, streamlined flow. Slurries at low pressure, which would normally clog most other valve designs, easily pass through a diaphragm valve. The valve has a top-entry design, allowing in-line maintenance; it is suitable for throttling and on/off service in applications ranging from water treatment to chemical abrasion processes. Diaphragm valves are operated manually, electrically or pneumatically.
Features and Benefits
Flanged (ANSI) face-to-face dimensions are equivalent to most commonly used metallic valves
Rugged body and bonnet are of solid thermoplastic for maximum corrosion resistance
Uniquely designed body and bonnet together with diaphragms of new sealing designs by computer dynamic analysis for superior sealing
Weir design for excellent throttling
Bubble-tight sealing, even in applications such as slurries or suspended particles
Bonnet seals to protect internals from corrosive environments
Built-in travel stop to prevent over-tightening or compressive strain on diaphragm
Integrally molded bottom stand for simple yet firm panel mounting
Indicator at the top for indication of valve position and prevention of over-tightening
All valves with Teflon diaphragms come with PVDF gas barrier, which protects the EPDM backing from gas permeation
1/2" - 2" in bayonet structure to connect compressor and diaphragm - easy diaphragm replacement
Materials
Sizes: 1/2" - 4"
Body Materials: PVC, CPVC, PP and PVDF
Bonnet Materials: PVC, PP, PPG and PVDF
Diaphragms: EPDM and PTFE
Also available in other materials such as nitrile and FKM
Available Actuators
Series 92 Electric
Pneumatic
Options
PVDF gas barrier for aggressive fluids
2" square nut
"T" operating nut for remote operation
Stem extensions (single and two-piece design)
Locking device for tamper-proofing
Manual limit switches for remote position indication by lights or for sequencing of other equipment
Pneumatic (all sizes) or electric (to 3") actuation