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Samson 2371-10 Mounting And Operating Instructions
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Samson 2371-10 Mounting And Operating Instructions

Samson 2371-10 Mounting And Operating Instructions

Pressure regulator
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EB 2640 EN
Translation of original instructions
Type 2371-11 Pressure Reducing Valve
Manual set point adjustment
Type 2371-10 Pressure Regulator · Pneumatic set point adjustment
Type 2371-11 Pressure Regulator · Manual set point adjustment
Series 2371 Pressure Reducing Valve for the Food and Pharmaceutical
Industries
Edition May 2024
Type 2371-10 Pressure Reducing Valve
Pneumatic set point adjustment

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Summary of Contents for Samson 2371-10

  • Page 1 Type 2371-11 Pressure Reducing Valve Type 2371-10 Pressure Reducing Valve Manual set point adjustment Pneumatic set point adjustment Type 2371-10 Pressure Regulator · Pneumatic set point adjustment Type 2371-11 Pressure Regulator · Manual set point adjustment Series 2371 Pressure Reducing Valve for the Food and Pharmaceutical Industries Edition May 2024...
  • Page 2 Î For the safe and proper use of these instructions, read them carefully and keep them for later reference. Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service (aftersalesservice@samsongroup.com). The mounting and operating instructions for the devices are included in the scope of delivery.

  • Page 3: Table Of Contents

    Safety valve ....................11 Leakage line connection ................11 Operation ....................12 Start-up .......................12 Adjusting the set point ..................12 5.2.1 Set point · Type 2371-11 ................12 5.2.2 Set point · Type 2371-10 ................14 Operation ....................14 Decommissioning ..................14 Cleaning and maintenance ................14 Cleaning .....................15 6.2 Maintenance · Replacing parts ..............19 Replacing the plug ..................19 Replacing the diaphragm unit ...............21 Replacing the two diaphragms ..............22...

  • Page 4: General Safety Instructions

    General safety instructions 1 General safety instructions − The regulator is to be mounted, started up or serviced by fully trained and qualified personnel only; the accepted industry codes and practices are to be observed. Make sure employees or third parties are not exposed to any danger. − All safety instructions and warnings given in these mounting and operating instructions, particularly those concerning installation, start-up, and mainte- nance, must be strictly observed.

  • Page 5: Process Medium And Scope Of Application

    The valve closes when the downstream pressure rises. WARNING The Type 2371-10/-11 Regulators are designed as safety valves. Exceeding the maximum pressure (10 bar/150 psi) of the regulator may cause it to burst. If necessary, a suitable overpressure protection must be installed on site in the plant section.

  • Page 6: Design And Principle Of Operation

    Any medium escaping from the test connec- tion (11) indicates that the operating dia- Type 2371-10 ·Version with pneumatic set point adjustment (see also Chapter 5.2 on phragm (4) may be leaking or the dia- phragm has ruptured. The test connection of page 12) Type 2371-10 is connected to a flexible pipe...
  • Page 7 The screw (12) prevents parts from amount of safety when one of the dia- falling apart inadvertently while the regula- phragms ruptures and prevents the process tor is being dismantled. medium and external pressure medium from Type 2371-10 Type 2371-11 Valve body Adjustment screw Clamp fitting Input pressure...
  • Page 8 ê ∙ G  connection   Lock nut Unit of pressure Pneumatic stem locking · Types 2371-10/-11 Manual stem locking · Type 2371-11 Stem locking engaged Fig. 2: Stem locking EB 2640 EN...
  • Page 9 Design and principle of operation Pneumatic stem locking Type 2371-10 To open the valve, apply a pressure p 1 bar) to the pneumatic unit. This causes the plug stem to move together with the plug out of the valve seat. A set point pressure p must not be applied to the regulator in this case.

  • Page 10: Installation

    Installation 4 Installation Select a straight section of pipeline without any disturbances as the site of installation for the regulator (to ensure that the control func- NOTICE tion is not affected by the flow conditions). Damage due to pressure peaks. If solenoid valves are installed downstream 4.1 Mounting orientation of the regulator when the regulator is used to control liquids, pressure peaks may occur The regulator has an angle-style...

  • Page 11: Safety Valve

    Output pressure the regulator. Fig. 3: Installation drawing (Type 2371-11) 4.3 Safety valve The Type 2371-10 and Type 2371-11 Pres- sure Reducing Valves are shut-off devices that do not guarantee absolute tight shut-off. When closed, these regulators can have a leakage rate (see Chapter 9 on page 26). As a result, the output pressure p...

  • Page 12: Operation

    Operation 5 Operation 5.2.1 Set point · Type 2371-11 Manual set point adjustment ∙ See Fig. 1 on 5.1 Start-up page 7. The set point is adjusted for the lowest output Do not start up the regulator until all parts pressure in the delivered state. The locking have been mounted. screw (12) is not tightened. Fill the plant slowly with the process medium.
  • Page 13 Operation The valve closes when the output pressure p exceeds the pressure adjusted set point. Stopper ∙ Locking screw (12) concealed 5. Retighten the locking screw (12) to pre- vent the set point screw (6) from being turned. − Reinsert the stopper. Position of the locking screw (12) with stopper Fig. 4: Set point adjustment of Type 2371-11 EB 2640 EN...

  • Page 14: Set Point · Type 2371-10

    Cleaning and maintenance 5.2.2 Set point · Type 2371-10 G ¼ connection for the set point pressure Pneumatic set point adjustment ∙ See Fig. 1 line at the side on the pressure unit on page 7. How to proceed: 1. Connect the external set point pressure line at the G ¼ connection. Max. pres- sure p  = 8 bar. 2. Adjust the set point pressure p to obtain and keep the required pressure constant.

  • Page 15: Cleaning

    Cleaning and maintenance 6.1 Cleaning Depending on the operating conditions, check the regulator at regular intervals to To clean inside the regulator, the plug can be avoid possible malfunctions. kept in the open position in the version with stem locking. This allows the entire plant with WARNING the regulator installed to be cleaned (CIP = Be aware of the risks on performing work...
  • Page 16 Cleaning and maintenance Manual stem locking Type 2371-11 See section “Stem locking for CIP or SIP” on page 8. How to proceed: 1. Remove the blanking plug and screw the pin (13) of the stem locking with the lock nut (14) into the adjustment opening. − The end of the pin comes to rest on the head of the set point screw and keeps the plug in the open position.
  • Page 17 Cleaning and maintenance Pneumatic stem locking Stem locking engaged  = 6 bar Type 2371-10 and Type 2371-11 See section “Stem locking for CIP or SIP” on connection page 8. Actuator housing Stem locking Type 2371-11 The pressure p  = 6 bar applied to the pneu- matic unit opens the valve. This causes the plug stem to move together with the plug out of the valve seat and opens the valve.
  • Page 18 Cleaning and maintenance Type 2371-10 Stem locking disengaged  = Atmospheric pressure To open the valve, apply a pressure p 1 bar to the pneumatic unit. This causes the plug stem to move together with the plug out of the valve seat. A set point pressure p connection must not be applied to the regulator in this...

  • Page 19: Maintenance · Replacing Parts

    6.3 Replacing the plug Types 2371-10/-11 · Replacing the plug The plug (3) is screwed into the plug support (3.1). It can only be removed through the in- let port. In this case, use the appropriate Screwed-in plug (3), plug support (3.1) seal...
  • Page 20 Cleaning and maintenance two washers into the threaded hole with the concave sides facing away from each other (as shown in the drawing). − Do not forget the PEEK seal! Tightening torque Retaining − DN 15 to 25: 5 Nm washers PEEK seal (NPS ½ to 1) − DN 32 to 50: 20 Nm (NPS 1¼ to 2) Insert washers as shown in the diagram.

  • Page 21: Replacing The Diaphragm Unit

    Cleaning and maintenance 6.4 Replacing the diaphragm Contact SAMSON if you intend to replace just the diaphragm or plug support. unit How to proceed: Type 2371-11 · Diaphragm unit See Fig. 11 In the event that the diaphragm is defective, we recommend replacing the entire dia- 1.

  • Page 22: Replacing The Two Diaphragms

    9. Position the clamp fitting. Grease the phragms groove and screw with food grade lubri- cant. Hit the clamp lightly with a plastic Type 2371-10 · Two diaphragms hammer and tighten the clamp screw again until the parts fit properly. The two diaphragms are clamped from the outside between the valve body (1) and cov- Type 2371-11 · Replacing the diaphragm...
  • Page 23 Cleaning and maintenance How to proceed: Note 1. Undo and remove the four screws (16, The plug stem is guided by ball bearings in width across flats 13). Keep in a safe the cover (valve bonnet). On pulling off the place for later. cover, the ball bearings embedded in food 2.

  • Page 24: Replacing The Set Point Springs

    You need to replace the set point springs (7) aftersalesservice@samsongroup.com. with both plates to achieve a different set The addresses of SAMSON AG, its subsid- point range. We recommend changing the iaries, representatives and service facilities entire actuator housing (8) with set point worldwide can be found on the SAMSON springs (7) and set point screw (6).

  • Page 25: Nameplate

    Nameplate 8 Nameplate The specifications are located on the actua- tor housing. art. 3 sect. 3 Made in France Fig. 16: Inscription field 2 on the housing Comments: Fig. 15: Inscription field 1 on the housing Mark of conformity (food) 10 PED labeling Comments: 11 Made in France/year of manufacture Type designation 12 Arrow indicating the direction of flow Modification index Nominal size DN...

  • Page 26: Technical Data

    Technical data 9 Technical data Table 1: Materials · Material numbers according to ASTM and DIN EN Pressure reducing valve Type 2371-10 Type 2371-11 Version ANSI ANSI Body 1.4409 CF3M 1.4404 316L Metal seal 1.4404 316L 1.4404 316L Plug Seal for soft-seated plug...
  • Page 27 Technical data Table 3: Technical data (ANSI version) · All pressures (gauge) Types 2371-10/-11 ANSI Nominal size NPS ½ NPS ¾ NPS 1 NPS 1¼ NPS 1½ NPS 2  12 7.5 to 90 psi Type 2371-10 – 37.5 to 37.5 to Set point ranges  20 – 90 psi 90 psi  2) Type 2371-11 6 to 18 psi ∙ 15 to 45 psi ∙ 35 to 65 psi ∙ 60 to 90 psi Type 2371-10 G ¼...

  • Page 28: Dimensions

    Dimensions 10 Dimensions 52 mm 7 mm Type 2371-11 ∙ Standard version Type 2371-11 ∙ With manual stem locking ØD Refer to tables starting with Table 5 on 10.5 mm page 30 for associated dimensions. Type 2371-11 with clamp end connections is shown in these drawings. Upon delivery, the clamp fitting (connection between the actuator housing and valve) is turned 90° in the draw- ing. Type 2371-11 ∙ With pneumatic stem locking Fig. 17: Dimensional drawings for Type 2371-11 EB 2640 EN...
  • Page 29 41.3 mm Type 2371-10 ∙ Standard version Type 2371-10 ∙ With pneumatic stem locking Øint Øext Øint Øext L1 (L2) L1 (L2) Clamp connections Flanges Øint Øext Øint Øext L1 (L2) L1 (L2) Threaded connection according to DIN ... Threaded connection according to ISO/SMS ... Fig. 18: Dimensional drawings · Type 2371-10 and various types of end connection for Types 2371-10/-11 EB 2640 EN...
  • Page 30 Dimensions Table 5: Dimensions of the regulators · All dimensions in mm Type 2371-11 Type 2371-10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 DN 32 DN 40 DN 50 Nominal size NPS ½ NPS ¾ NPS 1 NPS 1¼ NPS 1½ NPS 2 NPS 1¼ NPS 1½ NPS 2 Common dimensions ØD Weight, approx. Type 8.5 kg/19 lb...
  • Page 31 Dimensions Table 6: Threaded connections · All dimensions in mm Type 2371-11 Type 2371-10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 DN 32 DN 40 DN 50 Nominal size NPS ½ NPS ¾ NPS 1 NPS 1¼ NPS 1½ NPS 2 NPS 1¼ NPS 1½ NPS 2 10 bar/150 psi DIN 11864-1 GS form A Series A Øint Øext RD34x1/8“ RD44x1/6“ RD52x1/6“ RD58x1/6“ RD65x1/6“ RD78x1/6“ RD58x1/6“ RD65x1/6“ RD78x1/6“...
  • Page 32 Dimensions Table 7: Clamp connections · All dimensions in mm Type 2371-11 Type 2371-10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 DN 32 DN 40 DN 50 Nominal size NPS ½ NPS ¾ NPS 1 NPS 1¼ NPS 1½ NPS 2 NPS 1¼ NPS 1½ NPS 2 10 bar/150 psi DIN 11864-3 NKS form A Series A Øint Øext 50.5 50.5 50.5 77.5 50.5...
  • Page 33 Dimensions Table 8: Flanges · All dimensions in mm Type 2371-11 Type 2371-10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50 DN 32 DN 40 DN 50 Nominal size NPS ½ NPS ¾ NPS 1 NPS 1¼ NPS 1½ NPS 2 NPS 2 NPS 1¼ NPS 1½ 10 bar/150 psi DIN 11864-2 NF form A, Series A Øint Øext 10 bar/150 psi DIN 11864-2...
  • Page 34 EB 2640 EN SAMSON AKTIENGESELLSCHAFT Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 samson@samsongroup.com · www.samsongroup.com...

This manual is also suitable for:

2371-11