(144) The Mark 50 Sliding Gate Back Pressure Regulator is used to regulate upstream pressure at a predetermined setpoint. The spring in the Mark 50 holds the sliding gate seats in their normally closed position.
The upstream pressure is sensed beneath the diaphragm. As the upstream pressure exceeds the setpoint, pressure is exerted on the diaphragm which raises the stem to modulate the disc (the movable component of the sliding gate seat set) toward the open
position. As the seats open, upstream pressure will be regulated to the required setpoint. A decrease in pressure relaxes the spring and diaphragm to move the seats toward the closed position. The actuator required for the valve will be decided by the diaphragm material.
(16) The Mark 501 and 502 meet higher capacity requirements than standard back pressure regulators. The High Flow Mark 501 has Cv’s as high as 50 (43Kv) and the Super High Flow Mark 502 has Cv’s up to 70 (60.2 Kv). Each valve is standard with Jordan’s Sliding Gate Seats, which helps to reduce the build-up commonly associated with high flow back pressure regulators.The actuator required for the valve will be decided by the diaphragm material.
Jordan’s unique self-operated sliding gate back pressure regulator offers:
(72) 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. 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.
(320) 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.
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 force on top of the diaphragm), the valve moves toward the open position, relieving the necessary pressure to maintain the set point.
(32) Jordan vacuum regulators control very accurately and shutoff tightly to maintain the proper vacuum setting. They are used to maintain vacuums at predetermined settings and to regulate vacuums on evaporators, cookers, grinding fixtures, milking machines, altitude chambers and other vacuum systems.
(45) The Mark 56 is a highly accurate and economical air loaded back pressure regulator that provides regulation from a local station or from a remote station. The operation of the MK56 requires no control spring or pilot. Instead, a static air signal is applied to the top of the diaphragm to determine the setpoint. The MK56 has a rangeability of approximately 40:1; the same as our pilot-type sliding gate regulator, the MK57. However, unlike other piloted regulators, the MK56 has no minimum differential pressure requirement, and, because of its lack of a pilot valve, the MK56 is not as susceptible to problems caused by dirty service.
The MK56 offers an easily adjustable setpoint. The setpoint is based on changing the air load to the ...
(40) The Mark 57 pilot operated back pressure regulator is designed to accurately control pressure to 100% of its rated flow capacity with only a small deviation from setpoint. The Mark 57 provides accuracy that approaches that of controller-operated valves and should be considered on most critical applications before other costly, more sophisticated instrumentation.
The MK57 is part of the sliding gate regulator offering. As with all sliding gate products, a much shorter stroke than the standard globe or plug style valve is achieved. The shorter stroke combined with the action of the pilot valve creates a faster and more accurate response (less droop). This allows a shorter travel for the seats to reach optimal positioning, with less ...
(32) The Mark 58 back pressure regulator features three ports: a bypass outlet on the bottom, and two side ports which are directly connected to serve as dual inlets or as inlet and outlet for through-flow. It can be installed in a “T” fashion such that the fluid normally flows in one side and out the other side, with the flow being relieved through the bottom bypass when the pressure exceeds the setting. It can also be installed with one side port as an inlet and the other side port plugged. In this arrangement when the inlet pressure exceeds the set point, fluid is relieved through the bottom port. The cage is available with hardened nickel plating.
The Mark 58 is available in sizes up to 2" (DN50) in a wide variety of body materials. ...
(81) The M508 Gas Back Pressure Regulator is the ideal valve for low back pressure gas and liquid services. The MK508 works in conjunction with the MK608, in a low pressure tank blanketing valve system. The MK508 can be used to vent gas from the tank to prevent the blanketing pressure from rising to a level that could damage the tank while maintaining a small constant flow to keep the blanket fresh. During filling, this regulator will be required to open wide to allow enough gas to escape as the vapor space in the tank grows smaller. To size properly, the rate of fill must be known so that a regulator can be chosen based on its ability to relieve the required amount of gas while sustaining desired blanketing pressure. The MK508 will also ...
(4) The Mark 518 is a back pressure regulator for use in low pressure gas and liquid services. With a selection of six pressure ranges, set points can be chosen to control back pressures from 1” w.c. to 7 psi (3 mbar to 0.5 bar). For critical applications, the Mark 518 can be provided with soft PTFE or Viton seats for ANSI Class VI bubble-tight shutoff. The valve is also leak-proof under vacuum conditions.
The MK518 back pressure relief valve is used for maintaining the pressure of air and gases in the positive inches w.c. (mbar) pressure range. The regulator is specifically designed for pressure inertizing and blanketing in mixing vessels, storage tanks and containers using an inert gas such as nitrogen. To order the 4” (DN100) size, please ...
(42) The Mark 5800HP is a high pressure, back pressure regulator designed to maintain upstream pressure of gases and liquids. As a compact, lightweight product, it is well suited for applications where space and weight are at a premium. With a robust, piston design, the MK5800HP can handle setpoints up to 2500 psig (172 bar) at 450°F (232°C) with ease and the large flow capacity for a valve of this style is among the highest in the industry. The T-bar adjusting handle allows for a lighter spring and more sensitive regulator than those models with a fixed knob. This added sensitivity contributes greatly to the accuracy of the valve.
The valve is normally closed, with the soft seat maintaining ANSI Class VI shutoff. When the inlet ...
