Mark 80 Self-Operated Temperature Regulators
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Jordan Valve, a Division of Richards Industries 3170 Wasson Road • Cincinnati, Ohio 45209 Telephone 513-533-5600 • Fax 513-871-0105 Toll-FreeTelphone: 800-543-7311 (U. S. A. & Canada) E-Mail: info@richardsind.com • URL: www.jordanvalve.com Mark 80 Self-Operated Temperature Regulators The MK80 Series is completely self-operated and requires no external power source or other expensive instrumentation to operate the valve. The operation of the MK80 is fairly simple. A pre-measured amount of liquid fill is drawn into the thermal system filling the upper diaphragm chamber, the capillary tube, and most of the bulb. As the controlled temperature increases, the volatile liquid fill in the sensing bulb begins to vaporize and creates pressure on the sealed system. This pressure drives the valve stem, closing direct acting valves, or opening reverse acting valves. Because of the shorter stroke length of the sliding gate seats, the MK80 is able to utilize a sealed actuator with a stainless steel diaphragm, and does not require a bellows to operate. To seal the actuator, the upper and lower casings and diaphragm are heli-arc welded around the circumference to create a solid bond. This seal eliminates the need for any type of gasket. All sealing surfaces on the MK80 are metal to metal. Accurate temperature control begins with a reliable actuator. A temperature regulator is only as good as its actuator and a great deal of research has gone into the development of Jordan’s stainless steel SWA actuator. That is why the SWA, combined with Jordan’s sliding gate regulator design, provides the finest temperature control available in a self-operated design. Among the features of the SWA actuator: • Heliarc welded construction: the upper and lower casings, and diaphragm, are heliarc welded around the circumference to fuse a solid bond and eliminate the need for a gasket, a common source for leakage. • Stainless Steel diaphragm: pre-formed from AISI 347 SST to eliminate rupturing caused by metal fatigue brought about by constant stress, the most common failure in bellows actuators. • Sensitive control: because of the stroke length, the span of an SWA is about 1/3 that of a typical bellows actuator. Temperature Regulators Mark 80 Self-Operated Temperature Regulators • Simple replacement: attached to the yoke by just four screws, the actuator can be replaced in less than five minutes. Control ranges can be changed with the valve in line by simply replacing the actuator. • Liquid/vapor thermal system: to obtain the force needed to position the valve seats, Jordan uses a liquid/vapor thermal system that is capable of delivering far more operating power than the simple liquid expansion systems used on other temperature regulators. As the sensed temperature increases, the liquid fill in the bulb begins to vaporize and creates pressure within the sealed system. This pressure, exerted on the diaphragm, drives the valve stem to modulate the valve seats to the proper position. FEATURES • High rangeability — controls flows from 5% to 100% of rated capacity • Sliding gate seats provide — — Straight-through flow for reduced turbulence and quiet operation — Short stroke for fast response and accurate temperature control — Easily interchangeable Cv’s — Tight shutoff due to overlap of seat closure area • Available with capillaries up to 100 feet in length

MK80 SELF-OPERATED TEMPERATURE REGULATORS Line Sizes: 1/2” (DN15) through 2” (DN50) End Connections • Threaded — FNPT, BSPT, BSPP • ANSI Flanges — 150#, 300# • DIN Flanges — PN10/16, PN25/40 Body Materials • Ductile Iron • Bronze • Carbon Steel • Stainless Steel Trim Materials • 303 SS for DI, BRZ & CS body valves • 316SS for SS body valves Seat Materials • Jorcote on SST — Standard • Jorcote/Jordanic on SST — For severe service • Chrome Plated SST — Optional Yoke Material: Cast Iron Stem Packing Materials • Spring-loaded Teflon (to 450°F max/232°C max) • braided (above 500°F/260°C up to...

MK80 SELF-OPERATED TEMPERATURE REGULATOR Actuator: Type SWA Capillary Material • Standard — Copper • Optional — SST Armor/Bulb Material • Standard — SST with copper bulb • Optional — SST with SST bulb; Teflon with Teflon/SST bulb Capillary/Armor Length • Standard — 8 feet • Optional — lengths to 100 feet Standard Bulb Dimensions THERMAL SYSTEM SPECIFICATIONS Bulb Type Nominal Bulb Size (Diameter x Length) for ranges beginning... 101°F (38,3°C) or above 100°F (37,7°C) or below A & B 1" x 12" (standard) (2,5cm x 30,5cm) 1" x 14" (standard) (2,5cm x 35,6cm) 3/4" x 23" (optional) (1,9cm x...

Mark 801/802 Self-Operated Temperature Regulators The MK801/802 Series is completely self-operated and requires no external power source or other expensive instrumentation to operate the valve. The Mark 801/802 Series is the high-flow and superhigh flow versions of our Mark 80 Series temperature regulator. Accurate temperature control begins with a reliable actuator. A temperature regulator is only as good as its actuator and a great deal of research has gone into the development of Jordan’s stainless steel SWA actuator. That is why the SWA, combined with Jordan’s sliding gate regulator...

MK801/802 SELF-OPERATED TEMPERATURE REGULATORS Cv Values & Maximum Differential Pressure • Mark 801 SPECIFICATIONS ** Lower spans and ranges available with optional light spring + Requires 1” x 17” bulb Line Sizes: 1/2” (DN15) through 2” (DN50) End Connections • Threaded — FNPT, BSPT, BSPP • ANSI Flanges — 150#, 300# • DIN Flanges — PN10/16, PN25/40 Body Materials • Ductile Iron • Bronze • Carbon Steel • Stainless Steel Trim Materials • 303 SS for DI, BRZ & CS body valves • 316SS for SS body valves Seat Materials • Jorcote on SST — Standard • Jorcote/Jordanic on SST — For severe service •...