Self-Operated Sliding Gate Pressure Reducing Regulator; Quick Ship Available The Mark 60 Series is designed to regulate downstream pressure across a wide range of applications, including steam, water, oil, gas, and chemicals. Engineered for durability and performance, this self operated pressure regulating valve uses sliding gate seats to provide precise control and long-lasting reliability in a compact, lightweight design. Sizes: 1/4″ – 4″ (DN8 – DN100) Cv (Kv): up to 200 (up to 172)

Self-Operated, High Flows The Mark 601 and Mark 602 are used in applications that require higher Cv (Kv) rating without using a larger valve. The high flow Mark 602 has Cv's (Kv's) as high as 50 (43) and the super high flow Mark 602 has Cv's (Kv's) up to 70 (60). The sliding gate seats help reduce the droop commonly associated with high flow regulators.

High Pressure Regulator The Mark 60HP Series has a working pressure fully rated to ANSI Class 600 pressures, and permits setpoints as high as 450 psi. The Mark 60HP is used to regulate the downstream pressure to a predetermined setpoint. The spring in the Mark 60 holds the sliding gate seats in their normally open position to allow the process media to pass through the sets.

High Sensitivity The Mark 61 Series handles a broad range of applications including steam, water, oil, gas, air and chemicals. It is a self-operating pressure regulator used to regulate the downstream pressure to a predetermined setpoint. The sliding gate seats offer excellent control and extreme longevity in a compact, lightweight design. It features a larger diaphragm to provide greater sensitivity.

Internally Piloted Regulator The Mark 62 internally piloted pressure regulator is a specialty valve designed for critical application regulation in locations where space is limited. Small and lightweight in design, the Mark 62 valve provides the accuracy of a piloted valve with the size, weight, and appearance of a single, self-operated valve. The Mark 62 will accurately control pressure with little deviation from the set point. The accuracy levels approach those provided by control valves with quicker response, therefore, the Mark 62 should be considered before other more expensive, sophisticated control instrumentation.

Downstream Vacuum Regulator, Sliding Gate Seat; 1/2″ – 2″ (DN15 – DN50) The Mark 65 Series is ideal for steam, water, oil, gas, air and chemical services. The vacuum pressure 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 vacuum on evaporators, cookers, grinding fixtures, milling machines, altitude chambers and other vacuum systems.

Air Loaded Pressure Reducing Regulator, Sliding Gate Seat, High Accuracy The Mark 66/660 is a highly accurate and economical air loaded pressure regulator that provides regulation from a local station or from a remote station. Dome loading combined with the sliding gate seats provide excellent regulation and rangeability. This air loaded regulator 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.

Pilot-Operated, High Flow The Mark 67 Series is for critical pressure reducing applications and provides greater accuracy and lower offset than can be achieved with a self-operated regulator. The sliding gate seats provide unsurpassed seat and diaphragm life, easy of installation, simplified maintenance and more accurate performance.

Wafer Style, Jorlon Diaphragm The Mark 675 Series wafer style sliding gate pressure regulator is used to regulate the downstream pressure to a predetermined setpoint. The wafer style design allows for easy installation and maintenance due to its reduced weight and sliding gate seats. The flow is straight through the valve seats and body. Direction of the disc travel is perpendicular to the flow, not opposed to the direction of the flow. The MK675 can use a wider range of its stroke to give accurate control; less offset.

Pressure Reducing Globe Valve, High Capacity, Accurate; Sizes: 1/4″ – 2″ (DN8 – DN50) The Mark 68G delivers precise pressure regulation, exceptional flow capacity, and simple maintenance - all designed to keep your operations running smoothly. This globe type pressure reducing valve ensures reliable, accurate performance in demanding industrial applications, while the innovative bottom-entry design simplifies cleaning and repairs. With top-access to the diaphragm, many maintenance tasks can be performed in-line, reducing downtime and service costs. Choose the Mark 68G for superior control, easy serviceability, and long-term operational confidence.

High Pressure Regulator The Mark 68HP is designed primarily for high pressure steam service commonly found in power plants, refineries, pulp and paper mills, and other high pressure process applications. Since high pressure superheated steam is routinely used for power generation (turbines), a high pressure steam regulator capable of withstanding these pressures is needed for the distribution of lower pressure steam for individual process requirements. Common uses for the Mark 68HP high pressure steam regulator valve include: - Pressure reduction of turbine extraction steam to desuperheaters. - Steam injection to turbine bearing seals to eliminate pressure differential across this area. - Primary pressure reduction from the main steam header to lower pressure points of use.

Air-Loaded, Globe Trim, ANSI IV or VI The Mark 686G features air-loading, high capacities, accurate regulation, and easy servicing, making it an exceptional choice for your pressure regulating applications. The Mark 686G has a large effective diaphragm area for increased accuracy and sensitivity along with large orifices and body passages which provides high flow capacities. Easily removable bottom cap of this air loaded pressure regulator allows quick access for replacing seat and plug.

Self-Operated Pressure Reducing Gas Regulator, High Inlet Pressure; 3/4″ - 2″ (DN20 - DN50) The Mark 627 Series is a self-operated, pressure -reducing regulator and is designed to provide tight-shutoff and accurate regulation on low or high pressure systems. This spring loaded pressure regulator can be used on air, natural gas or a variety of other gases. The top entry design allows for easy in-line maintenance.

Gas Regulator, Self-Operated, High Inlet Pressure The Mark 630 Series is a self-operated pressure reducing regulator designed to provide right shutoff and accurate regulation on high pressure gas systems. It can be used on air and a variety of gases. This gas pressure reducing regulator is designed to handle inlet pressures up to 1500 psi (103 bar).

Piloted Pressure Reducing Regulator for Critical Low Pressure, High Flow Applications 1-1/2" - 2" (DN40 - DN50); Balanced Plug The Mark 687 Series is a piloted soft seat regulator for critical pressure reducing applications. It uses balance plug trim with the action of a pilot valve to create a faster, more accurate (meaning less droop as your flows increase) response.