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Danfoss Safety Pressure Relief Controller, SAVA

SAVA Safety Pressure Relief Controller

Brand: Danfoss
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Danfoss Safety Pressure Relief Controller, SAVA
SAVA is a self-acting safety pressure relief controller primarily for use in district heating systems. 

The controller is normally closed and opens on rising pressure. It is used for pressure relief control and as a protection against excess pressure in front of the valve. 

The controller has a control valve, an actuator with two control diaphragms and a spring(s) for pressure setting.

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Specifications

Brand

Actuator Size

  • 8.37 In² (54 cm²)

Applications

  • District Heating

Approvals & Certifications

  • DIN-Gepruft
  • EN 1092-2

BSP Connection

  • G 1” A Male
  • G 1-1/4” A Male
  • G 1-3/4” A Male
  • G 2” A Male
  • G 2-1/2” A Male
  • G 3/4” A Male

Cone Material

  • Valve Cone: Dezincing Free Brass CuZn36Pb2As

Connection Style

  • External Thread
  • Flange

Diaphragm Material

  • EPDM

Differential Pressure

  • Actuator - psi: 14.5 to 159.5 (kPa: 100 to 1,100, bar: 1 to 11)
  • Maximum

Electrical Contacts

  • Normally Closed

Enclosure, Body Material

  • Actuator Housing: 304 Stainless Steel, 1.4301 (Upper Casing of Diaphragm)
  • Actuator Housing: Dezincing Free Brass CuZn36Pb2As (Lower Casing of Diaphragm)
  • Valve Body (Thread): Red Bronze CuSn5ZnPb (Rg5)
  • Valve Body: Ductile Iron EN-GJS-400-18-LT (GGG-40.3)

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - PN 25

Flange Size - 1-1/4” (DN 32)

  • 1-1/4” (DN 32) - PN 25

Flange Size - 1” (DN 25)

  • 1” (DN 25) - PN 25

Flange Size - 1/2” (DN 15)

  • 1/2” (DN 25) - PN 25

Flange Size - 2” (DN 50)

  • 2” (DN 50) - PN 25

Flange Size - 3/4” (DN 20)

  • 3/4” (DN 20) - PN 25

Flow Rate

  • 4 to 25 m³/hour (Kvs)

Function

  • Control
  • Safety Function

Materials of Construction

  • Copper - Impulse Tube

Measuring Range

  • Medium PH: 7 to 10

Media

  • Circulation Water
  • Glycolic Water up to 30 %

Mounting Position

  • Any Orientation
  • Horizontal

Nominal Pressure

  • psi: 362.6 (kPa: 2,500, bar: 25)

Process Temperature

  • 2° to 150° C (35.6° to 302° F)

Seat / Seal Material

  • EPDM: Seal
  • Valve Seat: 316Ti Stainless Steel, 1.4542

Size

  • Valve: 1” (DN 25)
  • Valve: 1/2” (DN 15)
  • Valve: 1-1/2” (DN 40)
  • Valve: 1-1/4” (DN 32)
  • Valve: 2” (DN 50)
  • Valve: 3/4” (DN 20)

Tube Connection

  • Impulse Tube: Copper Tube Ø 6 x 1 mm

Welded Connection

  • DN 15 Weld End
  • DN 20 Weld End
  • DN 25 Weld End
  • DN 32 Weld End
  • DN 40 Weld End
  • DN 50 Weld End

  • District Heating

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