Dome Loaded, High Accuracy

The Mark 56 Series is a highly accurate and economical air loaded back pressure regulator that provides regulation from a local station or from a remote station. 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. This valve can be coupled with an extended range I/P for remote operation. It can also be manually controlled with a MK12 loading station or a LowFlow JR regulator.

Features & Benefits
  • 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
Specifications

Sizes: 1/2″ – 6″ (DN15 – DN150)

Cv (Kv): up to 395 (up to 340)

Diaphragm: Jorlon, Stainless Steel, Buna-N, Viton

Setpoint: up to body ratings

Body Material: Ductile Iron, Bronze, Carbon Steel, Stainless Steel, Cast Iron

End Connection: Threaded, Flanged, Socket Weld, Butt Weld

Resources

Benefits of the Sliding Gate

Read on to learn the benefits of owning sliding gate regulators and control valves.

Sliding Gate Inforgraphic

Download this infographic on the benefits of the sliding gate in regulators and control valves.

Sliding Gate Valve Overview

Watch this video for an overview of Sliding Gate Pressure Regulators and Control Valves

Sliding Gate Videos

Learn more about the sliding gate seat design by watching these videos.

Approvals
  • CRN Number
    Mark 56: 1/2″ – 6″
STEP Files

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

Jordan Valve Express

The Mark 56 is available for Next Business Day shipment.

Details:
Sizes: 1/2″ – 2″

DI & SS NPT valves only, all else 3 weeks

Some exclusions may apply

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