We offer a complete range of FLOWX Butterfly Valves from general purpose to heavy duty and high performance models. These economical butterfly valves are known for their reliability, long service life, and reduced operating costs.
FLOWX Butterfly Valves can be ordered with or without Pneumatic Actuators or Electric Actuators assembly. If requested, a valve expert will work with you to determine the best assembly for your application.
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Bubble-tight shut off at full pressure rating
Seat and disc are the only two valve parts in contact with the medium
Superior design for abrasive and erosive media
Very low pressure drop
Top bushing absorbs side thrust loads
Hub seal provided by preloaded contact between flatted seat surface and disc hub area for positive sealing at all disc positions
One-piece wafer thin disc stem gives the very minimum to obstruction to flow
Field replaceable seat isolates the body and stem from the flow
Molded-in O-rings provide flange sealing and eliminate need for gaskets
| Size Range | 2" - 20" (50mm - 500mm) |
| Body Style | Wafer, Lug |
| Temperature Range | -20℃~155℃ |
| Pressure Ratings | Bidirectional Bubble-tight Shutoff: to 175 psi (12 Bar)
Body (CWP): 250 psi (17.2 Bar) |
| Body Materials | Cast Iron, Ductile Iron, Carbon Steel, Aluminum |
| Disc Materials | Nylon 11 Coated Ductile Iron, Aluminum Bronze, Stainless Steel, Hastelloy®*, Halar®* Coated Ductile Iron |
| Stem Materials | Stainless Steel, Monel K500 |
| Seat Materials | BUNA-N, EPDM, FKM*, Polyurethane |
| Applications | Potable Water, Wastewater, Seawater, HVAC |
Pneumatic “DA” and “SR” Series
| Type | DA series is double acting and SR series is spring return (rack and pinion) |
| Normal Supply Pressure | DA: 40 to 115 psi (2.7 to 7.9 bar); SR: 80 psi (5.5 bar) |
| Maximum Supply Pressure | 120 psi (8.6 bar) |
| Air Connections:DA01 | DA01: 1/8" female NPT; DA02 to DA05: 1/4" female NPT; SR02 to SR07: 1/4" female NPT |
| Housing Material | Anodized aluminum body and epoxy coated aluminum end caps |
| Temperature Limits | -40 to 176°F (-40 to 80°C) |
| Accessory Mounting | NAMUR standard |
Electric “FLX” and “FLX-E” Series
| Power Requirements | 110 VAC, 220 VAC, 24 VAC or 24 VDC (MD models not available in 24 VDC) |
| Power Consumption | See instruction manual |
| Cycle Time (per 90°) | FLX-01: 4 s; 01: 10 s; FLX-02 and FLX-E 02: 20 s; FLX-03 and FLX-E03: 30 s |
| Duty Rating | 85% |
| Enclosure Rating | NEMA 4X (IP67) |
| Housing Material | Powder coated aluminum |
| Temperature Limits | -22 to 140°F (-30 to 60°C) |
| Electrical Connection | 1/2" female NPT |
| Modulating Input | 4 to 20 mA |
| Standard Features | Manual override, position indicator, and TD models come with two limit switches |
