• The stem seal is not easily deformed to avoid the normal stem leakage, and the overall support is good, stable and firm.
• With less seat rubber, there is less potential for expansion and it is easier to control the torque within the proper range.
• The use of two-piece valve stems with no pin connection, the structure is simple and compact, and maintenance and disassembly are very convenient.
COVNA company main produce: Pneumatic U Type Butterfly Valves
• Simple structure, good interchangeability, and low price.
• The stem seal is not easily deformed to avoid the normal stem leakage, and the overall support is good, stable and firm.
• With less seat rubber, there is less potential for expansion and it is easier to control the torque within the proper range.
• The use of two-piece valve stems with no pin connection, the structure is simple and compact, and maintenance and disassembly are very convenient.
• The butterfly board has the function of automatic centering, and the butterfly board and valve seat are closely matched.
• The phenolic back valve seat has the characteristics of not falling o仔 tensile resistance, leakage prevention and easy replacement.
• Surface: Polyester, RAL9006, 100μ
• Face-to-face: EN558-1
• Counter flange: DN40-DN300, PN10/16/ANS1150
• BS10 TABLE D/E JIS 10K 16K
• DN350 – DN600 PN10 or ANS1150 BS10 TABLE D/E
| Nominal Size | Operated Type | Work Pressure | Work Temperature | Seal Material | Disc Material | Body Material | Medim | Connection Standard |
|---|---|---|---|---|---|---|---|---|
| DN25 ↓ 350 | Pneumatic Actuator, Electric Actuator, Manual Hand Lever, Worm Gear | PN2, PN1.0, PN1.6 | -15-85°C, -25-150°C, -15-85°C, -25-200°C | EPDM, PTFE | WCB, SS304, SS316, Polishing Plate | Ductile Iron | Strong Acid, Strong Alkali, Fodder | PN10/PN16, ANSI150, D1N16, JIS10K/16K |
COVNA company main produce: Pneumatic U Type Butterfly Valves
