Mark 56 Series – Air Loaded Back Pressure Regulator

The Mark 56 is a highly accurate and economical air loaded, back-pressure regulator that provides regulation from a local or remote station. The operation of the Mark 56 requires no control spring or pilot. Instead, a static air signal is applied to the top of the diaphragm to determine the setpoint.

The LowFlow JR regulator is ideal for controlling the pressure load to the top of the diaphragm.

  • All metal-to-metal contacts – No gaskets or o-rings to wear out (2”/DN50 and under)
  • Versatile Application – Use on steam, air, gas, liquids, or chemicals
  • 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

Data Sheet
Mark 56 Series Data Sheet

Installation & Maintenance
Mark 56 Series I & M

Dimensional Drawing
Mark 56 Series Dimensional Drawings (1/2″ – 2″)
Mark 56 Series Dimensional Drawings (2 1/2″ – 4″)

Overview
Jordan Valve Product Guide
Jordan Valve Product Guide – A4

The Mark 56 is available for Next Business Day shipment.

Details:
Sizes: 1/2″ – 2″

DI & SS NPT valves only, all else 3 weeks

For a complete list of considerations, please click here

1/2″ Mark 56 Series Bronze & Ductile Iron with BSPP Ends
1/2″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends
1/2″ Mark 56 Series Bronze & Ductile Iron with Welded 300# Flanged Ends
1/2″ Mark 56 Series Bronze & Ductile Iron with Welded 1500# Flanged Ends
1/2″ Mark 56 Series Bronze & Ductile Iron with FNPT Ends
1/2″ Mark 56 Series Carbon & Stainless Steel with BSPP Ends
1/2″ Mark 56 Series Carbon & Stainless Steel with BSPT Ends
1/2″ Mark 56 Series Carbon & Stainless Steel with Welded 300# Flanged Ends
1/2″ Mark 56 Series Carbon & Stainless Steel with Welded 1500# Flanged Ends
1/2″ Mark 56 Series Carbon & Stainless Steel with FNPT Ends
1/2″ Mark 56 Series Carbon & Stainless Steel with Socket Weld Ends

3/4″ Mark 56 Series Bronze & Ductile Iron with BSPP Ends
3/4″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends
3/4″ Mark 56 Series Bronze & Ductile Iron with Welded 300# Flanged Ends
3/4″ Mark 56 Series Bronze & Ductile Iron with Welded 1500# Flanged Ends
3/4″ Mark 56 Series Bronze & Ductile Iron with FNPT Ends
3/4″ Mark 56 Series Carbon & Stainless Steel with BSPP Ends
3/4″ Mark 56 Series Carbon & Stainless Steel with BSPT Ends
3/4″ Mark 56 Series Carbon & Stainless Steel with Welded 300# Flanged Ends
3/4″ Mark 56 Series Carbon & Stainless Steel with Welded 1500# Flanged Ends
3/4″ Mark 56 Series Carbon & Stainless Steel with FNPT Ends
3/4″ Mark 56 Series Carbon & Stainless Steel with Socket Weld Ends

1″ Mark 56 Series Bronze & Ductile Iron with BSPP Ends
1″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends
1″ Mark 56 Series Bronze & Ductile Iron with Welded 300# Flanged Ends
1″ Mark 56 Series Bronze & Ductile Iron with Welded 1500# Flanged Ends
1″ Mark 56 Series Bronze & Ductile Iron with FNPT Ends
1″ Mark 56 Series Carbon & Stainless Steel with BSPP Ends
1″ Mark 56 Series Carbon & Stainless Steel with BSPT Ends
1″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
1″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends
1″ Mark 56 Series Carbon & Stainless Steel with BSPT Ends
1″ Mark 56 Series Carbon & Stainless Steel with Socket Weld Ends

1-1/4″ Mark 56 Series Bronze & Ductile Iron with BSPP Ends
1-1/4″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends
1-1/4″ Mark 56 Series Bronze & Ductile Iron with Welded 300# Flanged Ends
1-1/4″ Mark 56 Series Bronze & Ductile Iron with Welded 1500# Flanged Ends
1-1/4″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends

1-1/2″ Mark 56 Series Bronze & Ductile Iron with BSPP Ends
1-1/2″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends
1-1/2″ Mark 56 Series Bronze & Ductile Iron with Welded 300# Flanged Ends
1-1/2″ Mark 56 Series Bronze & Ductile Iron with Welded 1500# Flanged Ends
1-1/2″ Mark 56 Series Bronze & Ductile Iron with FNPT Ends
1-1/2″ Mark 56 Series Carbon & Stainless Steel with BSPP Ends
1-1/2″ Mark 56 Series Carbon & Stainless Steel with BSPT Ends
1-1/2″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
1-1/2″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends
1-1/2″ Mark 56 Series Carbon & Stainless Steel with FNPT Ends
1-1/2″ Mark 56 Series Carbon & Stainless Steel with Socket Weld Ends

2″ Mark 56 Series Bronze & Ductile Iron with BSPP Ends
2″ Mark 56 Series Bronze & Ductile Iron with BSPT Ends
2″ Mark 56 Series Bronze & Ductile Iron with Welded 300# Flanged Ends
2″ Mark 56 Series Bronze & Ductile Iron with Welded 1500# Flanged Ends
2″ Mark 56 Series Bronze & Ductile Iron with FNPT Ends
2″ Mark 56 Series Carbon & Stainless Steel with BSPP Ends
2″ Mark 56 Series Carbon & Stainless Steel with BSPT Ends
2″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
2″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends
2″ Mark 56 Series Carbon & Stainless Steel with FNPT Ends
2″ Mark 56 Series Carbon & Stainless Steel with Socket Weld Ends

2-1/2″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
2-1/2″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends

3″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
3″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends

4″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
4″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends

6″ Mark 56 Series Carbon & Stainless Steel with Integral 300# Flanged Ends
6″ Mark 56 Series Carbon & Stainless Steel with Integral 1500# Flanged Ends


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