– The products have passed ISO9001 and CE certification.
– The valve life is guaranteed for 5 years.
– We provide one-stop sourcing service for you.
– The dozens of series of ball valves, butterfly valves, electric actuators, pneumatic actuators, and accessories.
• Rack and pinion design
• Spring return or double acting
• Open and closed adjustment stops
• True NAMUR accessory mounting
• Visual indicator
COVNA company main produce: Pneumatic Wafer Butterfly Valves
• Designed to MASS-SP67, APl609 standards
• Flanged ends designed To PN16,PN10,DlN16,JlS10K,16K ANSI B16.1/16.5,BS4504,DlN2015.
• Working pressure: 225PSl TO 8″ 150PSI To12″
• Shell test: 350PSl
• Seal Test: 250PSI
• Direct Mount ISO5211 for low profile,Cost-efficient operation
• Pneumatic actuator, electric actuator, worm gear, handle lever as operators.
• Rack and pinion design
• Spring return or double acting
• Open and closed adjustment stops
• True NAMUR accessory mounting
• Visual indicator
| Nominal Size | Operated Type | Work Pressure | Work Temperature | Seal Material | Disc Material | Body Material | Medim | Connection Standard |
|---|---|---|---|---|---|---|---|---|
| DN25 ↓ 1200 | Pneumatic Actuator, Electric Actuator, Manual Hand Lever, Worm Gear | PN6, PN10, PN16 | -15-85°C, -25-150°C, -15-85°C, -25-200°C | EPDM, PTFE, NBR, VITON | SS304/SS316, Aluminum Bronze, Nylon, Ductile Lron, 2205, 2507, 1.4529 | Ductile Iron, SS304/SS316, WCB, Aluminium Alloy, 2205, 2507, 1.4529 | Water, Oil, Gas, Powder, FGDD | PN10/PN16, ANSI150, DIN16, JIS10K/16K |
COVNA company main produce: Pneumatic Wafer Butterfly Valves
