Diaphragm safety valve for closed water heaters, SM152
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| Type SM152 diaphragm-type safety valves are used to protect pressurised water heaters according to the requirements of DIN 4753, Part 1 and DIN 1988. In accordance with statutory requirements, the diaphragm
safety valve is preset to the required fixed set pressure by the manufacturer and is sealed with an embossed security cap marked with the test badge and pressure rating to prevent unauthorised tampering with the setting. Subsequent alteration of the setting is not permitted and is impossible without destroying the security cap. The preset pressure is embossed on the security cap. |
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| Approvals |
TUEV approved, certified to Pressure Equipment Directive 97/23/EG, Reference No. CE 0035 |
| Media |
Water |
| Body material |
brass |
| Spring bonnet material |
synthetic material |
| Port connection type |
internal threads |
| Max. media temperature |
95 oC |
| Additional description |
The valve size is defined by the size of the inlet connection. For closed water heaters in compliance with DIN 4753, Part 1 and EN 1717. Tested to TRD 721 for pressure range 1.0 bar to 10.0 bar.
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Tested to TRD 721 |
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Easy venting |
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Replacement insert makes servicing simple |
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Standardised discharge connection |
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| Port diameter | DN size | Set pressure | Type |
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| inch | mm | bar | |
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| 1/2 | 15 | 6 | SM152-1/2AA  | | 3/4 | 20 | 6 | SM152-3/4AA | | 1 | 25 | 6 | SM152-1AA | | 1 1/4 | 32 | 6 | SM152-11/4AA |
| Port diameter | DN size | Set pressure | Type |
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| inch | mm | bar | |
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| 1/2 | 15 | 8 | SM152-1/2AB | | 3/4 | 20 | 8 | SM152-3/4AB | | 1 | 25 | 8 | SM152-1AB | | 1 1/4 | 32 | 8 | SM152-11/4AB |
| Port diameter | DN size | Set pressure | Type |
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| inch | mm | bar | |
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| 1/2 | 15 | 10 | SM152-1/2AC | | 3/4 | 20 | 10 | SM152-3/4AC | | 1 | 25 | 10 | SM152-1AC | | 1 1/4 | 32 | 10 | SM152-11/4AC |
| Port diameter | DN size | Set pressure | Type |
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| inch | mm | bar | |
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| 1/2 | 15 | 6 | SM152-1/2BA |
| Port diameter | DN size | Set pressure | Type |
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| inch | mm | bar | |
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| 1/2 | 15 | 10 | SM152-1/2BC |
| Description | Additional Product Type |
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| Safety valve insert, set pressure 6 bar, for sizes R 1/2" | A152-1/2AA | | Safety valve insert, set pressure 6 bar, for sizes R 3/4" | A152-3/4AA | | Safety valve insert, set pressure 6 bar, for size R 1" | A152-1AA | | Safety valve insert, set pressure 8 bar, for sizes R 1/2" | A152-1/2AB | | Safety valve insert, set pressure 8 bar, for sizes R 3/4" | A152-3/4AB | | Safety valve insert, set pressure 8 bar, for size R 1" | A152-1AB | | Safety valve insert, set pressure 10 bar, for sizes R 1/2" | A152-1/2AC | | Safety valve insert, set pressure 10 bar, for sizes R 3/4" | A152-3/4AC | | Safety valve insert, set pressure 10 bar, for size R 1" | A152-1AC | | Safety valve insert with chrome plated body, set pressure 8 bar, for sizes R 1/2" | A152-1/2BB | | Safety valve insert with chrome plated body, set pressure 8 bar, for sizes R 3/4" | A152-3/4BB | | Safety valve insert with chrome plated body, set pressure 10 bar, for sizes R 1/2" | A152-1/2BC | | Safety valve insert with chrome plated body, set pressure 10 bar, for sizes R 3/4" | A152-3/4BC | | Safety valve insert, set pressure 6 bar, for sizes R 1 1/4" | A160-11/4AA | | Safety valve insert, set pressure 8 bar, for sizes R 1 1/4" | A160-11/4AB | | Safety valve insert, set pressure 10 bar, for sizes R 1 1/4" | A160-11/4AC |
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