- pressure rating PN 10
- max. operating temperature 65 °C
- short-term peak temperature 90 °C
antipollution check valve, with plugged drain port, union thread
figure 158 1G
- particularly suitable for hot water circulation systems due to very low opening pressure
- wetted metal parts made from dezincification-free and corrosion-resistant gunmetal, resistant against aggressive water
- male union thread
Product Features
- particularly suitable for hot water circulation systems due to very low opening pressure
- wetted metal parts made from dezincification-free and corrosion-resistant gunmetal, resistant against aggressive water
- male union thread
- with plugged drain port
- with test port
- controllable check cartridge
- free from dead spots
- for any installation position
Standards & approvals
- DVGW approval
- ÖVGW approval
- SVGW approval
- KIWA approval
- BELGAQUA approval
- VA approval
- according to DVGW worksheet W 570
- according to accepted materials list from German environmental agency
- up to DN 32 soundproofing certification according to DIN EN ISO 3822 Class 1
- DIN EN 13959
- ÜA-Reg.-Nr. R-15.2.3-21-17048, WIEN-ZERT
Technical data
| Part no. | DN | A1 | A2 | H1 (mm) |
L1 (mm) |
Zeta | ∆ popening (hpa) |
cv (m³/h) |
kg |
|---|---|---|---|---|---|---|---|---|---|
| 1581G01500 | 15 | G 3/4 | G 1/4 | 24 | 70 | 4.3 | 10 | 4.3 | 0.19 |
| 1581G02000 | 20 | G 1 | G 1/4 | 27 | 80 | 3.2 | 10 | 8.9 | 0.27 |
| 1581G02500 | 25 | G 1 1/4 | G 1/4 | 32.5 | 82 | 2.7 | 10 | 15 | 0.42 |
| 1581G03200 | 32 | G 1 1/2 | G 1/4 | 36 | 87 | 2.7 | 10 | 24.8 | 0.47 |
| 1581G04000 | 40 | G 1 3/4 | G 1/4 | 40.5 | 95 | 1.5 | 10 | 51 | 0.63 |
| 1581G05000 | 50 | G 2 3/8 | G 1/4 | 47.5 | 115 | 2.4 | 10 | 63.9 | 1.03 |
CAD models
| Part no. | DN | CAD model |
|---|---|---|
| 1581G01500 | 15 | Show 3D data |
| 1581G02000 | 20 | Show 3D data |
| 1581G02500 | 25 | Show 3D data |
| 1581G03200 | 32 | Show 3D data |
| 1581G04000 | 40 | Show 3D data |
| 1581G05000 | 50 | Show 3D data |
