The ZDM series automatic circulation pump protection valve is a pump protection device designed to automatically protect the pump from cavitation and instability during low load operation, especially when delivering hot water. When the pump flow rate drops below the preset threshold, the bypass valve fully opens to ensure that the pump maintains a minimum flow rate. Even if the main pipeline is completely closed and the flow rate is zero, the bypass can still circulate the minimum flow rate. The integrated multi-stage throttling pressure reducing valve in the bypass helps to reduce pressure. The ZDM series bypass valve is designed specifically for high-pressure environments and can manage pressure differentials up to 30 MPa. The specific choice is determined by the factory. The multi-stage pressure reducing M-type bypass effectively reduces the noise of high-speed fluids and prevents damage to valve components caused by cavitation and flash evaporation.
● L-Shaped Design: Achieve precise fluid control and streamlined flow regulation within the pipeline network.
● Forged Structure: Provides excellent structural integrity and extended service life, designed specifically for operation under extreme conditions.
● Reliable Sealing: Ensures airtight safety and zero leakage accuracy, making it an important component of critical mission systems.
| Size | in | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| mm | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | |
| L/L1(RF/BW) | in | 17.75 | 20.00 | 22.75 | 26.5 | 36.00 | 40.25 | 50.00 | 56.00 | / | / |
| mm | 451 | 508 | 578 | 673 | 914 | 1022 | 1270 | 1422 | / | / | |
| L2(RTJ) | in | 17.88 | 21.25 | 23.00 | 26.88 | 36.50 | 40.88 | 50.88 | 56.88 | / | / |
| mm | 454 | 540 | 584 | 683 | 927 | 1038 | 1292 | 1445 | / | / | |
| H | in | 7.50 | 9.00 | 11.00 | 14.12 | 15.75 | 18.88 | 20.50 | 26.38 | / | / |
| mm | 190 | 230 | 280 | 360 | 400 | 480 | 520 | 670 | / | / | |
| W | in | 24 | 32 | 32 | 32 | 32 | 40 | 40 | 40 | / | / |
| mm | 600 | 800 | 800 | 800 | 800 | 1000 | 1000 | 1000 | / | / | |
| WT(Kg) | RF/RTJ | 68 | 95 | 120 | 185 | 675 | 1100 | 1650 | 2300 | / | / |
| BW | 54 | 74 | 91 | 122 | 555 | 918 | 1355 | 2950 | / | / |
| Valve brand | GOOLE |
| Valve Model | HDTM |
| Connection form | flange; welding |
| Product material | Forged steel A105/F304 |
| Nominal diameter | DN40~DN500 |
| Adapt to medium | water, steam, etc |
| Pressure rating | PN16-PN420 |
Q1:What is the primary function?
This valve is used for fluid diversion in pipeline systems, allowing precise control of fluid flow between different paths.
Q2:What material is used?
The valve is made from forged steel, providing added strength and durability for long-term use in industrial applications.
Our valves have excellent sealing performance in critical applications, ensuring zero leakage even under extreme conditions. The streamlined L-shaped design aims to improve space efficiency and achieve seamless integration with enclosed spaces. The forged body has strong durability, ensuring long-term stable operation in harsh industrial environments. Forging L-shaped three-way ball valves is an ideal solution for industries that require precise flow management, optimized space utilization, and consistent durability during high-intensity operating cycles.
