Samson 42-37 Mounting And Operating Instructions
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Samson 42-37 Mounting And Operating Instructions

Self-operated regulators
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Self-operated Regulators
Flow and Differential Pressure Regulator
Type 42-37
Flow and Differential Pressure or
Flow and Pressure Regulator Type 42-39
Flow and differential pressure or pressure regulators
Type 42-37
Mounting and
Operating Instructions
EB 3017 EN
Edition September 2008
Type 42-39

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Summary of Contents for Samson 42-37

  • Page 1 Self-operated Regulators Flow and Differential Pressure Regulator Type 42-37 Flow and Differential Pressure or Flow and Pressure Regulator Type 42-39 Type 42-37 Type 42-39 Flow and differential pressure or pressure regulators Mounting and Operating Instructions EB 3017 EN Edition September 2008...

  • Page 2: Table Of Contents

    Contents Contents Page Design and principle of operation ....4 Installation ....... 7 Mounting position .
  • Page 3 Safety instructions General safety instructions The regulators must be installed, started up and serviced by fully trained and qualified personnel only, observing the accepted industry codes and practices. Make sure employees or third persons are not exposed to any danger. The regulator complies with the requirements of the European Pressure Equipment Directive 97/23/EC.

  • Page 4: Design And Principle Of Operation

    Design and principle of operation Design and principle of Type 42-37: The high pressure of Δp is trans- operation mitted through the control line (18) to the dia- phragm chamber D. The high pressure of the The regulators limit the flow rate in the pipe- flow rate (V ) upstream of the restriction (1.1)
  • Page 5 Design and principle of operation Type 42-37 Type 42-39 Type 2423 Valve balanced by a bellows Type 2427 Actuator Type 2429 Actuator Valve body Spring Overload protection (force Restriction for flow set point Venting (DN 125 and higher) limiter with internal excess...
  • Page 6 Design and principle of operation Type 42-37/Type 42-39 · DN 125 to 250 · Balanced by a diaphragm Type 2423 Valve balanced by a diaphragm Type 2427/2429 Actuator Valve body Plug Restriction for flow set point Balancing diaphragm Lock nut...

  • Page 7: Installation

    Installation Installation NOTICE Install Type 42-37 Regulator in the low pres- The regulator must be installed free of stress. If sure line (return flow) of the plant. necessary, support the piping near the con- nections. However, do not attach supports to Install Type 42-39 Regulator in the high pres- the valve or actuator.

  • Page 8: Mounting Position

    Attach the supplied low-pressure control line to the regulator as shown in Fig. 1. Connect the control line for pressure tapping in Type 42-37 to the pipeline upstream of the At the site of installation, route the high-pres- consumer. Make sure the pressure tapping...
  • Page 9 Control line kit · A control line kit for tapping pressure directly at the valve body is avail- 5.3 · Connection at the top – incorrect able as an accessory from SAMSON. Refer to Data Sheet T 3095 EN. Needle valve · If the regulator tends to hunt,...

  • Page 10: Strainer

    Install the pressure <150 °C gauge on the downstream side behind the Minimum length downstream pressure tapping point. of control line Fig. 6 · Type 42-37 with equalizing tank EB 3017 EN...

  • Page 11: Operation

    Operation Operation NOTICE Start-up The pressure at the actuator must not exceed the nominal pressure by 1.5 times on testing the pressure of the plant when the regulator is CAUTION! already installed First start up the regulator after mounting all The control lines must route the test pressure the components, e.g valve, actuator and con- to the actuator at the same time to prevent the...
  • Page 12 Operation Turn clockwise to close the restriction. Turn the screw counterclockwise (based This reduces the flow rate. on a closed restriction) until the selected Turn counterclockwise to open the restric- set point is adjusted. tion. This raises the flow rate. Check the flow rate at the heat meter and correct, if necessary.
  • Page 13 Operation Turns of set point adjustment (orifice) ______ – – – – Δp Δp = 0.5 bar = 0.2 bar restriction restriction Turns of set point adjustment (orifice) Fig. 7 · Adjustment diagram for Type 2423 balanced by a bellows, DN 15 to 80 EB 3017 EN...
  • Page 14 Operation Turns of set point adjustment (orifice) ______ – – – – Δp Δp = 0.5 bar = 0.2 bar restriction restriction Turns of set point adjustment (orifice) Fig. 8 · Adjustment diagram for Type 2423 balanced by a bellows, DN 100 to 250 EB 3017 EN...

  • Page 15: Set Point For Differential Pressure

    Operation Turns of set point adjustment (orifice) · Δp DN 125, DN 150 · A = 320 cm = 0.2 bar · Δp DN 200, DN 250 · A = 320 cm = 0.2 bar restriction restriction Balanced by a diaphragm Balanced by a diaphragm Fig.

  • Page 16: Pressure Set Point In Type 42- 39 Flow And Pressure Regulator

    Operation Decommissioning 3.2.3 Pressure set point in Type 42- 39 Flow and Close the shut-off valves starting from the up- Pressure Regulator stream side (high-pressure line). Adjust the pressure set point at the nut (17). CAUTION! While doing this, read the pressure off the in- On performing any work on the regulator, stalled pressure gauge on the downstream make sure the relevant section of the pipeline...

  • Page 17: Customer Service

    Addresses of SAMSON subsidiaries, agencies and service centers are listed in the prod- uct catalogs and in the Internet at www.samson.de. To allow SAMSON to find the fault and to have an idea of the installation situation, specify the following details (refer to the nameplate):...

  • Page 18: Maintenance · Troubleshooting

    Check restriction in the connection to chamber D Control loop Restriction (or needle valve) (Type 42-37) or chamber C (Type 42-39). If necessary, hunts is missing in a control line to install a needle valve in the control line and start to close dampen pulsation it until the control loop becomes stable.

  • Page 19: Nameplates

    Nameplates Nameplates Valve and actuator both have a nameplate. DIN version Valve Valve type Model number Model number index Order number or order date coefficient Nominal size Nominal pressure Perm. differential pressure in bar ANSI version Perm. temperature in °C Body material ANSI version Nominal size...

  • Page 20: Technical Data

    Technical data Technical data Table 3 · Technical data · Type 42-37 · Type 42-39 Type 2423 Valve · Balanced by a bellows Nominal size DN 15 to DN 100 DN 125 to DN 250 Nominal pressure PN 16, 25 or 40 (acc. to DIN EN 12516-1) Pressure at which internal 160 cm²...

  • Page 21: Dimensions

    Dimensions Dimensional drawing · Type 2423 Valve balanced by a diaphragm Type 42-37/Type 42-39 Fig. 11 · Dimensions of Type 2423 Valve balanced by a diaphragm Table 4 · Dimensions in mm and weights in kg · Type 2423 Valve balanced by a diaphragm...
  • Page 22 Dimensions Dimensional drawing · Type 2423 Valve balanced by a bellows Type 42-37/Type 42-39 Fig. 12 · Dimensions of Type 2423 Valve balanced by a bellows EB 3017 EN...
  • Page 23 Dimensions Table 5 · Dimensions in mm and weights in kg · Type 2423 Valve balanced by a bellows Type 2423 Valve balanced by a bellows Nominal size DN Length L Height H1 Other materials Height H2 1.4571 – – –...
  • Page 24 SAMSON AG · MESS- UND REGELTECHNIK Weismüllerstraße 3 · 60314 Frankfurt am Main · Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 EB 3017 EN Internet: http://www.samson.de...

This manual is also suitable for:

42-39

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