Pressure Regulators Mark 53/54 Series Differential Back Pressure Regulators The Jordan Mark 53 maintains a constant differential between the inlet pressure and the pressure loaded on top of the diaphragm. It can be used for both differential and remotely adjusted applications. The Mark 54 provides the same flow capacity as the Mark 53 but with less offset in controlled pressure due to larger diaphragm. Mark 53/54 — maintains a constant differential between the inlet pressure and the pressure loaded to the top of the diaphragm. Sliding Gate Seats — all of Jordan Valve’s differential regulators feature advanced sliding gate seat technology. —— 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: (Note: 1/4” (DN8) & 3/8”(DN12) use 1/2”(DN15) body with reducer bushings) • Mark 53/53HP: 1/4” (DN8) through 2” (DN50) • Mark 54: 1/4” (DN8) through 3/4” (DN20) End Connections: • Threaded — FNPT, BSPT, BSPP • ANSI Flanges — 150#, 300# • DIN Flanges — PN10/16, PN25/40 Body Materials: • Ductile Iron • Bronze • Carbon Steel — A216 WCB • Stainless Steel — SA351 CF8M Trim Materials: • 303 SST — Standard on Ductile Iron, Bronze, or Carbon Steel valves • 316SST — Standard on Stainless Steel valves Seat Materials: • Jorcote on SST — Standard • Jorcote/Jordanic on SST — For severe service • Chrome Plated SST — Optional Jordan Valve, a division of Richards Industries 3170 Wasson Road • Cincinnati, OH 45209 513.533.5600 • 800.543.7311 • 513.871.0105 (f) [email protected] • www.jordanvalve.com Mark 53 Differential Back Pressure Regulators The valve is normally closed. The inlet pressure acts beneath the diaphragm and is opposed by the force of the adjusting spring plus the pressure of the loading fluid. As the inlet pressure overcomes the set point (the combined pressures on top of the diaphragm), the valve moves toward the open position, relieving the necessary pressure to maintain the set point.

Mark 53/54 Differential Back Pressure Regulators Specifications (Cont'd) Diaphragm Materials • Stainless Steel — Standard • Buna-N • Viton • Jorlon Options: • DB: Double bolting for higher pressure ratings • C: Closing cap for adjusting screw • B: Bleed valve on spring housing (available only with option C closing cap above) • H: Handwheel and packing box • F: Flow-through spring housing. Permits “in-oil-line” installation for fuel oil atomization and steam atomizing systems. Reduces the possibility of the oil asphalting on top of the diaphragm • D: Separated double diaphragm (prevents mixing...

Mark 53/54 Differential Back Pressure Regulators Mark 53 Series Dimensions Flanged Ends Dimensions (inches) Size • Dimensions (inches) Threaded Ends ANSI Flange Mat'l DI/BRZ

Mark 53/54 Differential Back Pressure Regulators Mark 54 Series Dimensions D Flanged Ends Dimensions (inches) B ANSI Flange Flanged Ends, DIN Dimensions (mm) Threaded Ends

Mark 53/54 Differential Back Pressure Regulators Ordering Schematic To specify a MK53/54 Differential Back Pressure Regulator, build a model number by making a selection from each category in the Product Designator Coding System below. 1 Seat Material Large Diaphragm Separated Double Diaphragm Flow Through Dome High Pressure Stainless Steel Carbon Steel Ductile Iron Body Material Jordan Valve, a division of Richards Industries 3170 Wasson Road • Cincinnati, OH 45209 513.533.5600 • 800.543.7311 • 513.871.0105 (f) [email protected] • www.jordanvalve.com