Mark 80 Series – Self Operated

The Mark 80 Series is completely self-operated and requires no external power source or additional instrumentation to operate the valve.
 
Stainless steel seal-welded actuator (SWA) combined with the sliding gate seat design provides the finest temperature control available in self-operated valves.
 
 

• High rangeability – Controls flows from 10% to 90% of rated capacity

• Available with capillaries up to 100 feet in length

• 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

• Temperature ranges from -20°F to 450°F