Mark 70 Series

DESCRIPTION

Sliding Gate Jorlon Diaphragm Control Valve
The Mark 70 Series is a line of pneumatically-operated diaphragm control valves that combine multiple spring actuators with the precision of the sliding gate seat for closer control and greater accuracy. A side or top-mounted positioner is available to overcome the normal hysteresis for a control valve and actuator and to ensure that the valve stem position is always directly proportional to the control valve command signal.
Sizes: 1/4″ – 2″ (DN8 – DN50)
Cv (Kv): up to 30 (up to 26)
Features & Benefits

• Totally enclosed multi-spring actuator — minimizes deadband and is field reversible without the use of special tools or additional parts
• Compact design and simple construction — allows fast installation and easy maintenance
• Stem packing is four times deeper than stem travel for greater protection against leakage
• Sliding gate seats provide straight-through flow for reduced turbulence and quiet operation
• Short stroke for fast response and accurate regulation
• Easily interchangeable CV’s
• Tight shutoff

Specifications

• Sizes: 1/4″ – 2″ (DN8 – DN50)
• Body Material: Ductile Iron, Carbon Steel, Stainless Steel, Bronze
• Seat Material: Jorcote on SST standard
• Cv (Kv): up to 30 (up to 26)
• 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