Products
COVNA HK59DS-2 Pneumatic Flange Butterfly Valve with Metal sealing
Technical Specifications
Seal Types: Metal seal or soft seal (PTFE).
Advantages: Compact structure, long service life, easy maintenance, quick installation.
Size Range: DN50–DN600 (2″–20″).
Body Materials: Stainless Steel (SS), Cast Iron (CI), Ductile Iron, WCB.
Connection type: Wafer, lug, flange
Seat Materials: PTFE, Metal.
Disc/Stem Materials: Stainless Steel, WCB.
Pressure Rating: ≤1.6 MPa (ANSI 150#).
Media: Water, air, gas, oil, steam.
Technical Specifications
Seal Types: Metal seal or soft seal (PTFE).
Advantages: Compact structure, long service life, easy maintenance, quick installation.
Size Range: DN50–DN600 (2″–20″).
Body Materials: Stainless Steel (SS), Cast Iron (CI), Ductile Iron, WCB.
Connection type: Wafer, lug, flange
Seat Materials: PTFE, Metal.
Disc/Stem Materials: Stainless Steel, WCB.
Pressure Rating: ≤1.6 MPa (ANSI 150#).
Media: Water, air, gas, oil, steam.
Pneumatic Actuator Options
| Type | Function |
| Double Acting | Air to open/close; maintains position on air failure. |
| Single Acting N/O | Air to open, spring closes on air failure. |
| Single Acting N/C | Air to close, spring opens on air failure. |
| Accessories | Solenoid valve, limit switch, air filter, positioner, manual override. |
Actuator Specifications
Operating Media: Dry/lubricated air or non-corrosive gases (max particle size <30µm).
Air Pressure: Min 2.5 Bar, Max 8 Bar.
Air Supply: 2.5–10 Bar (dry/lubricated, particles <30µm).
Temperature Range:
Standard: -20°C to +80°C.
Extended: -35°C to +150°C.
Maintenance
- Tightening the seal between the valve and the actuator:
Remove the four bolts underneath the actuator. Separate the actuator from the valve.
Tighten the nut on the top of the valve body.
Place the actuator back on the valve and screw everything back into place.
- Tightening the seals between the valve and the inlet/outlet ports.
Remove the torque bolts and check for any debris or damage to the gaskets.
Use a torque wrench or other consistent method of tightening the torque bolts to reconnect the inlet and outlet ports.
Seal Types: Metal seal or soft seal (PTFE).
Advantages: Compact structure, long service life, easy maintenance, quick installation.
Size Range: DN50–DN600 (2″–20″).
Body Materials: Stainless Steel (SS), Cast Iron (CI), Ductile Iron, WCB.
Connection type: Wafer, lug, flange
Seat Materials: PTFE, Metal.
Disc/Stem Materials: Stainless Steel, WCB.
Pressure Rating: ≤1.6 MPa (ANSI 150#).
Media: Water, air, gas, oil, steam.
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Contact Us
TelePhone
+86-0769-22763199
info@covna-china.com
Location
Longchang Micro-Chuangyuan, Dongcheng District Dongguan City, China, 523000