รายละเอียด:
Features & Benefits
• Long bellows life – in lab tests, the Mark 74 exceeded 2 million cycles with no bellows failure
• Short stroke – valve stroke is just a fraction of other rising stem valves allowing for minimal movement during operation
• Fully packed back-up seal for additional assurance. A secondary chamber of multiple packing rings provides extra leakage protection
• Detection/monitoring port – a gauge can be mounted to verify bellows performance
Specification
• Sizes : 1/2" - 2" (DN8 - DN50)
• Body Material : Carbon Steel, Stainless Steel, Ductile Iron, Bronze
• Seat Materials : Jorcote/316SS
• Cv (Kv) : up to 30 (up to 10,3)
• Action : Direct (ATC) or Reverse (ATO)
• Ranges : 3-15 psi, 6-30 psi (0,2-1,0 bar, 0,4-2,1 bar) or split ranges