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Self-operated Pressure Regulators Pressure Reducing Valve Type 2357-1/-6 Excess Pressure Valve Type 2357-2/-7 Type 2357-1 Pressure Type 2357-2 Excess Reducing Valve Pressure Valve Type 2357-6 Pressure Reducing Valve Mounting and Operating Instructions EB 2557 EN Edition April 2011...
B. When no pressure is applied, the valve is closed. The pressure at port A acts on Type 2357-1 and Type 2357-6 Regulators the operating diaphragm (3) in the valve (globe valves) body. The resulting force opposes the adjust- The regulators act as pressure reducing able spring force.
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Spring plate Plug Set point spring(s) Operating diaphragm Lower section of body Gasket Set point adjuster Diaphragm plate Lock nut Ball Non-return unit Strainer Fig. 1 · Sectional drawings of Type 2357-1/-6 (left) and Type 2357-2/-7 (right) EB 2557 EN...
Installation Installation Shut-off valve and pressure gauge Mounting position We recommend installing a hand-operated The pressure regulator must be in- shut-off valve both upstream and downstream stalled with the actuator housing of the regulator to be able to shut down the hanging downward.
1 to 25 10 to 36 0.2 to 2.5 1 to 8 5 to 25 8 to 40 Set point 2357-1 adjusted at the factory to 2357-2 approx. … bar Set point change per turn in bar EB 2557 EN...
= SAMSON perform this work for you. 55 mm. Unscrew the body (1) using an The addresses of SAMSON AG, its subsidiar- open-end wrench with width across flats ies, representatives and service facilities...
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Spare parts Table 2 · Spare parts list with order numbers Spare parts list Order no. PN 40 PN 50 Set point range in bar 1 to 25 10 to 36 1 to 8 5 to 25 8 to 40 Pos.
Dimensions in mm and weights Dimensions in mm and weights Ø16 Ø16 51(35) 140 (95) 140 (95) Type 2357-2 Type 2357-1 Weight approx. 1.7 (0.8) kg Weight approx. 2.0 (0.9) kg Values in parentheses for PN 40 version Ø15 Ø15 Ø15 Type 2357-6 Type 2357-7 Weight approx.
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