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butterfly valve with pneumatic actuator working

Quarter Turn Double Acting Pneumatic Actuator have this feature.
1.Rack and pinion actuator available in doubule acting spring return.
2.Standard units have anodized aluminum bodies with polyester coated end caps.
3.Internal bidirectional travel stops.
4.Coating for harsh enviroments.
5.SIL3 capable
6.Inregral porting
7.NAMUR accessory compatible
  • FLXDA52 DA63



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.

Not what you're looking for? Return to Valves or Contact our experts.


  • 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


Butterfly Valve Catalogs  Download

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

FLOWX is a leading industrial valve supplier manufacturer, providing flow control and automation solutions for 30+ industries.

Solution coverage: Marine & Shipbuilding, Water Treatment Industry, Filling Industry, Plastic Industry (Pneumatic Conveying), Metallurgical Industry, Chemical industry, New Energy, Electronic Industry, Break Away Denitrification Industry, Petroleum Industry, Food, Powder Industry, Power Plant Industry, etc.

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