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Bypass Valve - Flanged 42-25 - Differential Pressure Regulator

Verified by manufacturer 7 days ago

Type 2422 valve, balanced by a bellows

SAMSON Controls Ltd Variant:

Differential pressure regulators, DN15–250 for installation in a bypass pipe or short-circuit pipe.

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+44 (0)1737 766391

Application

Differential pressure regulator for extended piping systems and industrial applications for installation in a bypass pipe or short-circuit pipe.

  • Suitable for circuit water water/glycol mixtures, steam and air as well as other liquids, gases and vapours (provided these do not affect the characteristics of the operating diaphragm).

Description

Differential pressure regulators, DN15–250 for installation in a bypass pipe or short-circuit pipe.


Features and benefits:

  • Consisting of valve and opening actuator; valve opens when the differential pressure rises.
  • Controls the differential pressure according to the adjusted set point (adjustment using a nut).
  • Low-noise, medium-controlled proportional regulator requiring little maintenance.
  • Spring-operated, single-seated valve with upstream and downstream balancing via a standard low-noise plug balanced by either bellows (DN15–250) or diaphragm (DN65–250).
  • Selection of valve body materials.
  • Suitable for circuit water water/glycol mixtures, steam and air as well as other liquids, gases and vapours.
  • Part of the Series 42 Self-regulated regulators range.


Also as a fixed set point regulator, consult manufacturer for details.

General information

Color

Silver

White

Material

Iron

Steel

Stainless steel

Width

-

Manufacturer guidance

Pipe diameter.

Height

-

Manufacturer guidance

Overall height.

Uniclass

Pr_65_54_95_25 Differential pressure control valvesPrimary

CAWS

S14/393 Pressure regulators

SKU Code

42-25 - DIN

Specification data - Differential pressure control valves

Pressure rating

PN16.
PN25.
PN40.

Differential pressure (maximum)

0.05–0.25 bar.
0.1–0.6 bar.
0.2–1 bar.
0.2–1 bar.
0.5–1.5 bar.
1–2.5 bar.
2–5 bar.
4.5–10 bar.

Manufacturer guidance

Set point ranges.

Continuously adjustable.

Temperature range

2–350°C.

Guidance for specification option:

35.6–662°F.

Fluid

Water.

Guidance for specification option:

Circuit water.

Water glycol mix.
Other liquid(s).

Guidance for specification option:

Insert details as required.

Must not affect the characteristics of the operating diaphragm.

Steam.
Other vapor(s).

Guidance for specification option:

Insert details as required.

Must not affect the characteristics of the operating diaphragm.

Air.
Other gas(es).

Guidance for specification option:

Insert details as required.

Must not affect the characteristics of the operating diaphragm.

Material

Cast iron body, standard internal parts.
Spheroidal graphite iron body, standard internal parts.
Cast steel body, standard internal parts.
Forged stainless steel body, standard internal parts.
Cast stainless steel body, standard internal parts.
Cast iron body, internal parts of FKM.

Guidance for specification option:

For use with mineral oils. Consult manufacturer for details of affected parts.

Spheroidal graphite iron body, internal parts of FKM.

Guidance for specification option:

For use with mineral oils. Consult manufacturer for details of affected parts.

Cast steel body, internal parts of FKM.

Guidance for specification option:

For use with mineral oils. Consult manufacturer for details of affected parts.

Forged stainless steel body, internal parts of FKM.

Guidance for specification option:

For use with mineral oils. Consult manufacturer for details of affected parts.

Cast stainless steel body, internal parts of FKM.

Guidance for specification option:

For use with mineral oils. Consult manufacturer for details of affected parts.

Manufacturer guidance

Consult manufacturer's literature for further details of other components.

Connections

Flanged, DN15.
Flanged, DN20.
Flanged, DN20.
Flanged, DN32.
Flanged, DN40.
Flanged, DN50.
Flanged, DN65.
Flanged, DN80.
Flanged, DN100.
Flanged, DN125.
Flanged, DN150.
Flanged, DN200.
Flanged, DN250.

Accessories

None.
Compression-type fittings.

Guidance for specification option:

Straight stud ends with parallel thread according to DIN 2353 to connect control lines to the valve.

  • G¼ threaded connection for pipe with 8, 10 or 12 mm outside diameter.

Screw joint with restriction.

Guidance for specification option:

Pipe screw fitting with restriction to dampen vibrations in the control line.

Various cross-sections available depending on the volume of the diaphragm actuator.

Needle valve.

Guidance for specification option:

To shut off the control lines and also to dampen any vibration.

  • Steel body (stainless steel on request).
  • G¼ female thread.

Compensation chamber.

Guidance for specification option:

Used to protect the operating diaphragm in the actuator against high temperatures. Required for medium temperatures above 150°C.

  • Maximum permissible pressure 40 bar (gauge).
  • Case made of sheet steel S235JR (1.0037). Two assembled condensation chambers with mounting brackets form a cool-down battery.
  • Control line connections with two compression-type fittings for pipes with an outside diameter of 8 mm (special version: for pipe with an outside diameter of 10 or 12 mm).

Double adapter for regulators.

Guidance for specification option:

For connection of a second control thermostat or a second actuator. The double adapter is mounted between the bellows housing and the actuator to apply a second controlled variable, e.g. to limit the temperature.

Orifice plate.

Guidance for specification option:

To create a differential pressure Δp.

Required when using a differential pressure regulator as a flow regulator.

  • Available for DN 15 to 300.
  • Material: stainless steel 1.4571.

The orifice bore diameter is calculated based on the technical data.

The orifice plate is mounted between the inlet flange of the differential pressure regulator and an additional welding neck flange.

Welding neck flange with compression-type fitting.

Guidance for specification option:

For flow control with an orifice plate.

  • Valve sizes DN 15 to 300.
  • Pressure rating PN 16, 25 and 40.
  • Control line connection: compression-type fitting for pipe with 8 mm outside diameter.
  • The dimensions correspond with DIN EN 1092-1, flange type 11. For simultaneous measurement and indication of the flow rate, the use of an orifice plate (orifice flange) and a flow meter must be used.

Control line connection.
Ready-mounted control line with accessories (mounting kit).

Guidance for specification option:

For transmitting the pressure to the diaphragm of the regulator.

The manufacturer recommends using a stainless steel 8 x 1 mm tube as a control line.

Optionally, they offer various regulator models with ready-mounted control lines, needle valves and compensation chambers.


Consult manufacturer's literature for details of the various options and configurations.

Valve

Type 2422, standard.

Type 2422, with flow divider.

Type 2422, FKM internal parts.

Type 2422, corrosion resistant.

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