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SVH Safety Relief Valve

SVH Safety Relief Valve

SVH is a high-lifting and soft-sealing safety valve for systems with only thermal expansion, and from inlet dimension ¾” and greater, also for boiler systems over 50 kW, max 2 MW, max 100°C. The valve must not ...

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SVH Safety Relief Valve

  • Variants
  • Detailed Information
  • Documentation
  • Questions & Answers

Variants

SVH - Female thread

SVH - Female thread 11 variants

The values reported are production data and not converted by a factor 0.9. (Relates to boiler system).

Article Dim. Opening pressure Discharge capacity A mm B mm C mm Weight (kg) Dimensional sketch Item List
055119 ½" x ¾" 0,15 MPa 56 kW 75 34 24.5 0.2
055137 ¾" x 1" 0,15 MPa 70 kW 86.5 37 34 2.5
055134 1" x 1¼" 0,15 MPa 192 kW 189 55 40 0.6
055188 1¼" x 1½" 0,15 MPa 201 kW 204 60 43 0.1
055120 ½" x ¾" 0,25 MPa 78 kW 75 34 24.5 0.2
055131 1" x 1¼" 0,25 MPa 266 kW 189 55 40 0.7
055192 1¼" x 1½" 0,25 MPa 279 kW 204 60 43 0.1
055121 ½" x ¾" 0,3 MPa 89 kW 75 34 24.5 0.2
055123 ¾" x 1" 0,3 MPa 110 kW 86.5 37 34 0.3
055133 1" x 1¼" 0,3 MPa 301 kW 189 55 40 0.7
055193 1¼" x 1½" 0,3 MPa 317 kW 204 60 43 0.1

055119

Dim. ½" x ¾"
Opening pressure 0,15 MPa
Discharge capacity 56 kW
A mm 75
B mm 34
C mm 24.5
Weight (kg) 0.2
Dimensional sketch
Item list

055137

Dim. ¾" x 1"
Opening pressure 0,15 MPa
Discharge capacity 70 kW
A mm 86.5
B mm 37
C mm 34
Weight (kg) 2.5
Dimensional sketch
Item list

055134

Dim. 1" x 1¼"
Opening pressure 0,15 MPa
Discharge capacity 192 kW
A mm 189
B mm 55
C mm 40
Weight (kg) 0.6
Dimensional sketch
Item list

055188

Dim. 1¼" x 1½"
Opening pressure 0,15 MPa
Discharge capacity 201 kW
A mm 204
B mm 60
C mm 43
Weight (kg) 0.1
Dimensional sketch
Item list

055120

Dim. ½" x ¾"
Opening pressure 0,25 MPa
Discharge capacity 78 kW
A mm 75
B mm 34
C mm 24.5
Weight (kg) 0.2
Dimensional sketch
Item list

055131

Dim. 1" x 1¼"
Opening pressure 0,25 MPa
Discharge capacity 266 kW
A mm 189
B mm 55
C mm 40
Weight (kg) 0.7
Dimensional sketch
Item list

055192

Dim. 1¼" x 1½"
Opening pressure 0,25 MPa
Discharge capacity 279 kW
A mm 204
B mm 60
C mm 43
Weight (kg) 0.1
Dimensional sketch
Item list

055121

Dim. ½" x ¾"
Opening pressure 0,3 MPa
Discharge capacity 89 kW
A mm 75
B mm 34
C mm 24.5
Weight (kg) 0.2
Dimensional sketch
Item list

055123

Dim. ¾" x 1"
Opening pressure 0,3 MPa
Discharge capacity 110 kW
A mm 86.5
B mm 37
C mm 34
Weight (kg) 0.3
Dimensional sketch
Item list

055133

Dim. 1" x 1¼"
Opening pressure 0,3 MPa
Discharge capacity 301 kW
A mm 189
B mm 55
C mm 40
Weight (kg) 0.7
Dimensional sketch
Item list

055193

Dim. 1¼" x 1½"
Opening pressure 0,3 MPa
Discharge capacity 317 kW
A mm 204
B mm 60
C mm 43
Weight (kg) 0.1
Dimensional sketch
Item list

Detailed Information

Description

SVH is a high-lifting and soft-sealing safety valve for systems with only thermal expansion, and from inlet dimension ¾” and greater, also for boiler systems over 50 kW, max 2 MW, max 100°C. The valve must not be used for steam.

The safety valve fits upright or horizontally, i.e. with the valve knob facing up or straight to the side. In the case of horizontal installation, the outlet must be positioned so that water skin cannot form. The connection thread is sealed in the usual way.

Inlet and outlet lines are implemented according to instructions in VVA 93.

The safety valve is maintenance-free, but the opening function must be checked 2 – 3 times a year.

Turn the plastic knob counterclockwise by hand until the valve starts to allow water through. Hold in position and allow the water to flush through for a short time. Then continue the torque until the valve closes.

The safety valve may open after a major drain from the water heater. This is a normal function as the water heater’s cut-off pressure can be reached due to the increasing volume of the water during heating.

Technical Data

Working temperature: Max. 110 °C
Thread standard: G - female thread
Material, valve body: Brass EN 12165 CW617N
Material, sealing: EPDM
Other data: Approval 0.25 and 0.30 MPa is TÜV tested, test report no. 624

Documentation

Product sheet

SVH Safety Relief Valve

Questions & Answers

Can you use LK's safety valves with steam?

None of LK's safety valves are designed to be used with steam.