Mark 52 Series
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Catalog excerpts

Mark 52 Series - 1

Back Pressure Internally Piloted Pressure Regulators The Mark 52 internally piloted back pressure regulator is a specialty valve designed for critical application regulation in locations where space is limited. Small and lightweight in design, the MK52 valve provides the accuracy of a piloted valve with the size, weight and appearance of a single, self-operated valve. The MK52 will accurately control pressure with little deviation from the set point, therefore the MK52 should be considered before other more expensive, sophisticated control instrumentation. The compact design and simple construction allows fast, simple installation and easy servicing. The high turndown ratios go up to 100:0. Operation The operation of the Mark 52 is very similar to that of an externally mounted piloted regulator. The main valve and the pilot are normally closed. The inlet pressure passes through the inlet pilot tubing beneath the pilot diaphragm. When the set point is reached, the force of the adjusting spring is overcome, and the pilot valve opens. This allows the inlet pressure to enter the chamber above the main diaphragm and opens the main valve. When the pressure drops below the set point, the adjusting spring overcomes the force of the pressure beneath the pilot diaphragm and the pilot and main valve closes. Internal pilot — provides higher accurate performance within a compact, lightweight assembly 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 Jordan Valve, a division of Richards Industries 3170 Wasson Road • Cincinnati, OH 45209 513.533.5600 • 800.543.7311 • 513.871.0105 (f) info@richardsind.com • www.jordanvalve.com Mark 52 Back Pressure Internally Piloted Pressure Regulators As the Mark 52 is self operating, it is suitable for use in locations where accurate regulation is needed, but air or electric supply may not be readily available. With the compact design, limited space applications is no problem, making it ideal for use on skids, or as an upgraded replacement for smaller regulators. The integral pilot design also means lighter weight, placing less stress on support piping. Back Pressure Regulators

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Mark 52 Series - 2

Mark 52 Back Pressure Internally Piloted Pressure Regulator Specifications Sizes: 1/2” through 2” (DN15 to DN50) Cv (Kv) Values & Maximum Differential Pressures Max. Δ P, psi (bar) Valve Size Seat Material 4.4 (3,78) End Connections • Threaded — NPT, BSPT or BSPP • Flanged Body Materials • Ductile Iron • Bronze Trim Materials • Stainless Steel • 316SST Low Flow Trim: reduced Cv's (Kv's) can be placed in any size valve as long as it is a smaller value than the standard Cv (Kv), with the lowest permissible value being 2.5 (2,15). Seat Materials • Jorcote on SST — Standard • Jorcote/Jordanic...

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Mark 52 Series - 3

Mark 52 Back Pressure Internally Piloted Pressure Regulator Flanged Ends Threaded Ends Size Threaded Ends, DIN Dimensions (mm) A Dimensions (Inches) ANSI Flange Flanged Ends, DIN Dimensions (mm)

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Mark 52 Series - 4

Mark 52 Back Pressure Internally Piloted Pressure Regulator Ordering Schematic To specify a MK52 Back Pressure Internally Piloted Pressure Regulator, build a model number by making a selection from each category in the Product Designator Coding System below. Seat Material 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) info@richardsind.com • www.jordanvalve.com

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