Air Relief Valves (Hava Yardım Vantuzu)

SMS manufactures single and double ball air relief valve which is operated directly by the working fluid. Large venting cross-section permits passage of large volumes of air for vacuum breaking and  venting on starting-up, closing-down, and other operating conditions. 

Small venting cross-section permits venting of small volumes of air under full internal pressure without interruption of operation.
 

Including rubber lined gate valve, which provides perfect sealing for maintanence, double ball air relief valves have triple effect:

  • Exhaust of air in large flow rates during filling of the line
  • Inlet of air in large flow rates during discharge of the line
  • Continious release of air by small orifice during operation
Diameter range:DN 50-300
Flanges: ISO 2531, DIN 2501
Pressure Class: PN10, PN16, PN25 and PN40
Hydraulic Test: BS 6755
Test Pressure:
  • Body :1.5 times of operating pressure
  • Seat: At operating pressure
Valve materials
  • Body : Ductile Cast Iron, GGG40 or 50, DIN1693
  • Cover: Ductile Cast Iron, GGG40 or 50, DIN1693
  • Ball: Rubber lined steel ball
  • Body seats: Bronze
  • Gate: Rubber lined ductile cast iron, GGG40, DIN1693
  • Shaft: Stainless steel, X20Cr13, BS 970 Part 431S29, ASTM A 582 420
  • Shaft seaing: O'ring
  • Handwheel: Ductile Cast Iron, GGG40 or 50, DIN1693
  • Coating & lining: Exopy paint