HERZ ball valves have to be used as shut off elements. Field of application are building services, such as heating or chilled water plants. Ball valves are used wherever the medium flow has to be reliably closed. Ball valve should not be used as regulating element so it has to be fully opened or fully closed (the handle should not be in intermediate position
| art | ident | ean | dn | pn | G | L1 | C | E | A | H | SW |
| KV 982 | 1121072 | 3838963237860 | 15 | 25 | G1/2" | 52,1 | 11 | 10,5 | 85 | 41 | 25 |
| KV 983 | 1131072 | 3838963237877 | 20 | 25 | G3/4" | 58 | 11 | 10,5 | 85 | 43 | 30 |
| KV 984 | 1141072 | 3838963237884 | 25 | 25 | G1" | 70 | 14 | 13,5 | 115 | 54,6 | 38 |
| KV 985 | 1151072 | 3838963237891 | 32 | 25 | G1-1/4" | 82,5 | 15 | 14,5 | 115 | 58 | 47 |
| KV 986 | 1161072 | 3838963238607 | 40 | 25 | G1-1/2" | 91 | 15,5 | 14,8 | 141 | 71,4 | 52,5 |
| KV 987 | 1171072 | 3838963238614 | 50 | 25 | G2" | 105,8 | 19 | 16 | 141 | 79,4 | 66 |
Operating data
- Operating pressure: max. 25 bar
- Operating temperature range: -10°C to +110 °C, (water +0,5 °C to +110 °C - no steam)
- Medium: water (non-aggressive media)
Assembly instructions
The threads of the pipe have to be coated with a suitable sealing material (spinning material, Teflon ribbon, sealing paste). There should not be excess of sealing material on the pipe because it can damage the thread. The ball valve with thread (G, R) is screwed onto the pipe. The pipes have to be correctly alligned, so the valve is not loaded with a bending moment. When using cooper or plastic pipes take into account pressure and temperature limits of used material. When assembling, use a suitable assembly tool that adapts to valve end connections (Sw, Sw1). The ball valve can be mounted in any position: horizontal, vertical or upside-down. Following assembly, the connections of ball valve must be checked for water-tightness by the installer. All engineering standards and recognised regulations must be adhered by these specialist staff. If there are impurities in the medium (water too hard, dust, etc.) there should be a filter installed, in other case the impurities can damage the seals in the valve.
According to EN 806-5 (point 6. Operation) valves should always be in their fully opened or closed position and actuated at regular intervals to ensure they remain operational. Therefore HERZ Ball valves must be closed and opened for several times periodically every six months. This prevents the ball valve from blocking, reduces sediment deposition and reduces the possibility of corrosion inside the valve.
The threads of the pipe have to be coated with a suitable sealing material (spinning material, Teflon ribbon, sealing paste). There should not be excess of sealing material on the pipe because it can damage the thread. The ball valve with thread (G, R) is screwed onto the pipe. The pipes have to be correctly alligned, so the valve is not loaded with a bending moment. When using cooper or plastic pipes take into account pressure and temperature limits of used material. When assembling, use a suitable assembly tool that adapts to valve end connections (Sw, Sw1). The ball valve can be mounted in any position: horizontal, vertical or upside-down. Following assembly, the connections of ball valve must be checked for water-tightness by the installer. All engineering standards and recognised regulations must be adhered by these specialist staff. If there are impurities in the medium (water too hard, dust, etc.) there should be a filter installed, in other case the impurities can damage the seals in the valve.
According to EN 806-5 (point 6. Operation) valves should always be in their fully opened or closed position and actuated at regular intervals to ensure they remain operational. Therefore HERZ Ball valves must be closed and opened for several times periodically every six months. This prevents the ball valve from blocking, reduces sediment deposition and reduces the possibility of corrosion inside the valve.
