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Safety valves

For the safeguarding of thermostatically protected, closed-circuit water heating, cooling, and solar systems with supply temperatures of up to 120°C, for all static heights according to TRD 721, DIN 4751 and DIN EN 12828.

Información de Producto

Safety valves for heating, cooling and solar systems DN 15 – DN 50

For the safeguarding of thermostatically protected, closed-circuit water heating, cooling, and solar systems with supply temperatures of up to 120°C, for all static heights according to TRD 721, DIN 4751 and DIN EN 12828.

Key features

Easy selection, broad product portfolio

DSV...DGH valves can be supplied from 1,0 to 25 bar in 0,1 bar increments. Special versions in other materials such as stainless steel, or with a thermal resistance of up to 400°C, are available upon request.

According to standards

All valves are TÜV type approved and comply with the standards listed under Approvals.

High blow off rates

Enhanced lift and capacity thanks to a special valve construction.

Cleaning of seat possible

A fully detachable bonnet allows for easy cleaning of the gasket while leaving valve settings unchanged.

Technical description

Applications:

Heating, cooling and solar systems for building technology and industrial applications.
Co-generation plants (CHP).
Biogas plants.
District heating transfer stations, building sub-stations.
Deployment in systems according to EN 12828, SWKI 93-1.
Solar heating.

Functions:

Protection of the maximum pressure on heat generators and systems.

Dimensions:

DN 15-50

Pressure:

DSV...H:
Max. admissible pressure, PS: 3 bar
Min. admissible pressure, PSmin: 0 bar
DSV...DGH (DN 15-32):
Max. admissible pressure, PS: 25 bar
Min. admissible pressure, PSmin: 0 bar
DSV...DGH Flanges (DN 40-50), DSV...F:
Max. admissible pressure, PS: 16 bar
Min. admissible pressure, PSmin: 0 bar
DSV...SOL:
Max. admissible pressure, PS: 10 bar
Min. admissible pressure, PSmin: 0 bar

Accuracy:

DSV...H:
Closing pressure tolerance: 0,5 bar
Open pressure tolerance: 0,5 bar
DSV...DGH:
Closing pressure tolerance: PSV* 0,1 bar
Open pressure tolerance: PSV* 0,1 bar
*) Additional DSV...DGH valves can be supplied from 1,0 to 16 (25) bar in
0,1 bar increments.
DSV...SOL:
Closing pressure tolerance: 20%
Open pressure tolerance: ± 0,5 bar below, and 10% above, 5 bar

*) Further DSV...DGH valves can be supplied from 1,0 to 16 (25) bar in steps of 0,1 bar.

Temperature:

Max. admissible temperature, TS: 120°C, DSV...SOL 160°C
Min. admissible temperature, TSmin: -10°C, DSV F -50°C

Media:

DSV...H: Addition of antifreeze agent up to 30%.
DSV...DGH: Addition of antifreeze agent up to 50%.
DSV...F: Addition of antifreeze agent up to 100%.

Material:

DSV...H, DSV...DGH (DN 15-32), SOL, DSV...F: Gun metal.
DSV...DGH Flanges (DN 40-50): Nodular graphite iron GGG: Colour beryllium.

Approvals:

DSV...H:
TÜV-CE-component inspected according to TRD 721-TÜV SV xx-516 H, PED/DEP 97/23/EC-01 202 111-B-00027.
DSV...DGH (DN 15-32):
TÜV-CE-component inspected according to TRD 721-TÜV SV xx-665 DGH, PED/DEP 97/23/EC-01 202 111-B-00029.
DSV...DGH (DN 40-50):
TÜV-CE-component inspected according to TRD 721-TÜV SV xx-2007 DGH, PED/DEP 97/23/EC-01 202 111-B-06079.
DSV...SOL:
TÜV-CE Type test approval xx-2013 SOL, EC type examination SOL TR ZU 032/2013 - TR ZU 010/2011 SOL.
DSV..F:
TÜV-CE Type test approval 293 F, TR ZU 032/2013 - TR ZU 010/2011.

Warranty:

5-year warranty

The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by IMI Hydronic Engineering without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit www.imi-hydronic.com.

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