Back Pressure Reducing/Bypass

Self-Operated Back Pressure Regulator - Mark 50 Series
Like the majority of Jordan Valves, the Mark 50 Series Back Pressure Regulator features the advanced sliding gate seat technology pioneered by Jordan Valve.   Using the Jordan Valve sliding gate seat technology, the Mark 50 back pressure regulators have the signature straight-through flow...
Internally Piloted Regulator - Mark 52 Series
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 Mark 52 valve provides the accuracy of a piloted valve with the size, weight, and appearance of a...
Differential Back Pressure Regulator - Mark 53/54 Series
The 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...
Vacuum Regulators - Mark 55 Series
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 at predetermined settings and to regulate vacuums on evaporators, cookers, grinding fixtures, milking...
Air Loaded Back Pressure Regulator - Mark 56 Series
The Mark 56 is a highly accurate and economical air loaded, back-pressure regulator that provides regulation from a local or remote station. The operation of the Mark 56 requires no control spring or pilot. Instead, a static air signal is applied to the top of the diaphragm to determine the...
Externally Piloted Regulator - Mark 57 Series
The Mark 57 provides accuracy approaching that of controller-operated valves and should be considered on most critical applications before other more expensive and sophisticated instrumentation. The Mark 57, a sliding gate regulator, has a much shorter stroke than the standard globe or plug...
Globe Style Back Pressure Regulator - Mark 58 Series
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 inlet and outlet for flow-through. It can be installed in a "T" fashion allowing fluid to flow in one side and out the other with the flow...
Tank Blanketing Valve - Mark 508 Series
The Mark 508 Gas Back Pressure Regulator is the ideal valve for low-pressure gas regulation. The Mark 508 works in conjugation with the Mark 608 in a low-pressure tank blanketing valve system.  The Mark 508 can be used to vent gas from the tank to prevent the blanketing pressure from...
Double Seated Tank Blanketing Valve - Mark 518 Series
The Mark 518 is a back-pressure regulator for use in low pressure air and gas services. With a selection of six pressure ranges, set points can be chosen to control back-pressures from 1" w.c. to 7 psi (3mbar to 0,5 bar). As a standard feature, the MK518 is provided with soft seals for ANSI Class...
Back pressure regulator - Mark 5108 Series
In many liquid piping systems, it is vital that line pressure is maintained within relatively narrow limits. This is the function of the Mark 5108 Series back pressure regulator. Installed in the main flow line, the standard Mark 5108-2 acts as a back pressure or pressure sustaining valve. In this...
MK508MM Series
The MK508MM Series are spring loaded, self-actuated, direct-operated valves. The Mark 508MM back pressure regulating vavles regulate upstream pressure and have excellent throttling characteristics to maintain the desired set point. They are available in 1" up to 10" (DN25 through DN250) body...
Mark 508UBS Series
The Mark 508UBS Series are spring loaded direct-operated, pressure relief valves used downstream of pressure regulators to protect the downstream system from over pressure. Their main function is to regulate the inlet pressure. They can also be  used as back pressure regulators as they have...
Mark 508BPM
The Mark 508BPM Series is a spring-loaded, self-actuated, direct-operated, valve. Pressure relief valves are used to protect the system from overpressure. The Mark 508BPM can also be used as back pressure regulators as they have excellent throttling characteristics. They are available in 1"...