Unlined Metal Diaphragm Valves
Hills-McCanna® Unlined Metal Diaphragm Valves, Unlined are rugged, durable, and designed to handle a wide range of fluids and gases including highly corrosive toxic chemicals and abrasive slurries. Available in a wide variety of materials and options, in sizes ½” to 12”, with a temperature range of (-)60°F to (+) 350°F at pressures to 200 psig.
Product Features & Benefits
- NO PACKING OR SEALS TO ADJUST
- NO VALVE SEATS TO REPLACE
- IN-LINE REPAIRABILITY
- DIFFERENT MATERIAL OPTIONS TO CHOOSE FROM:
- Unlined metal diaphragm valves are available in:
- Ductile Iron
- Carbon Steel
- 316 Stainless
- Alloy 20
- Other Materials (Contact Customer Service)
- BUBBLE-TIGHT SHUTOFF: On pressure or vacuum applications, zero leakage in accordance with MSS SP-88.
- THROTTLING: Ideal for both on/off and modulation applications. Streamline flow path is cavit free for excellent control capabilities.
- STREAMLINE FLOW/BI-DIRECTIONAL: Smooth contoured body design has no cavities or pockets for smooth flow and contamination-free performance. Hills-McCanna valves can be oriented to facilitate self-draining.
Technical Details
Size Range
Valve Sizing Constants (CV), Metallic Unlined: 1/2" to 12"
| Percent of Stem Travel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve Size | Turns* | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
| 0.5 | 3 | 0.8 | 1.6 | 2.4 | 3.3 | 4.4 | 5.3 | 6 | 6.6 | 6.9 | 7 |
| 0.75 | 3-3/4 | 1.5 | 3 | 4.2 | 6.5 | 8.2 | 9.7 | 11 | 12 | 12.8 | 13 |
| 1 | 4-1/2 | 2.5 | 6 | 9.5 | 13 | 16.5 | 19 | 21.5 | 23 | 24 | 24 |
| 1.25 | 4-3/4 | 4.5 | 8.5 | 14 | 18 | 22.5 | 27 | 29.5 | 31.5 | 32.5 | 33 |
| 1.5 | 5-3/4 | 9 | 18.5 | 27 | 35 | 42 | 47 | 51 | 53.5 | 55 | 65 |
| 2 | 7-1/4 | 16 | 30 | 43 | 53 | 62 | 69 | 74 | 78 | 80 | 81 |
| 2.5 | 7-1/4 | 23 | 45 | 64 | 81 | 94 | 105 | 113 | 119 | 123 | 125 |
| 3 | 7-1/2 | 35 | 69 | 104 | 134 | 160 | 180 | 194 | 202 | 207 | 209 |
| 4 | 10-3/4 | 78 | 148 | 208 | 259 | 296 | 321 | 338 | 350 | 357 | 360 |
| 6 | 15-3/4 | 165 | 300 | 425 | 525 | 610 | 680 | 735 | 775 | 795 | 805 |
| 8 | 18 | 210 | 425 | 635 | 840 | 1025 | 1180 | 1290 | 1360 | 1390 | 1400 |
| 10 | 20-1/4 | 300 | 600 | 865 | 1120 | 1370 | 1590 | 1770 | 1890 | 1950 | 1970 |
| 12 | 22-3/4 | 430 | 870 | 1290 | 1650 | 1960 | 2220 | 2400 | 2520 | 2580 | 2600 |
| * Approximate turns to close | |||||||||||
Weight of Standard Hills-McCanna Diaphragm Valves
| Threaded End, Butt Weld End, Socket End (approximate - in pounds) | ||||||
|---|---|---|---|---|---|---|
| Size | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 2-1/2" |
| Solid Plastic | 1 | 2 | 2.75 | 6 | 10.5 | --- |
| All Others | 2 | 2.5 | 4 | 9.5 | 15 | 27 |
| Flanged End (approximate - in pounds) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 2-1/2" | 3" | 4" | 6" | 8" | 10" | 12" |
| PVC | 1.5 | 2.25 | 3.5 | 7 | 12.75 | --- | --- | --- | --- | --- | --- | --- |
| All Others | 4 | 5 | 7 | 13 | 22 | 36 | 49 | 97 | 170 | 360 | 600 | 885 |
Pressure/Temperature Recommendations: (-)60°F to (+)350° F at pressures to 200 psig
Valve Options
Please review Diaphragm Valves Brochure for full details.
Bonnet (Non-Wetted Options)
- INDICATING (STANDARD) Valve position can be determined at a glance.
- INDICATING WITH TRAVEL STOP In addition to indicating position, the closing stroke can be limited.
- NON-INDICATING Used when space limitations are a factor.
ALSO AVAILABLE:
- Sealed Bonnet
- Chainwheel
- Extended Stem
- Actuated
End Connection Options
- THREADED
- ½” to 3”
- ½” to 2: Solid Plastic
- SOCKET WELD
- ½” to 3”
- ½” to 2” Solid Plastic
- FLANGED
- ½” to 12”
- ½” to 2” Solid Plastic
- BUTT WELD
- ½” to 4”
- Metal Only
Diaphragm Options
- McCannaplast™ EPDM Black
- McCannaplast™ EPDM White
- Neoprene Black
- Neoprene White
- PTFE / McCannaplast™
- Natural Rubber
- Viton
- Hypalon
Exclusive Sealing Bead
The sealing bead extends around and between bolt holes and across the setting area. This exclusive design localizes bolting and closing forces, assuring a positive seal with minimum bolting torque, and stem thrust.
Automation
Hills-McCanna actuators are available for on / off applications or when more complex flow control is required. Actuators can be provided with positioners, limit switches, speed controls, filter regulators, and a variety of other accessories and options to meet sophisticated flow control and fine throttling requirements.
Literature
Diaphragm Valve Assembly
Diaphragm Valve Installation and Operational Manual
Contact Us
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