The ZDM series automatic circulation pump protection valve is a pump protection device. It automatically protects the centrifugal pump from possible cavitation damage and instability that may occur in the pump body during low load operation (especially when transporting hot water medium). Once the pump flow rate falls below the preset flow rate, the bypass will be fully opened to ensure that the pump requires the minimum flow rate. Even if the main road is completely closed, meaning the main road flow is zero, the minimum flow can automatically circulate through the bypass. The integrated multi-stage throttling safety valve in the bypass reduces pressure. The ZDM series has a bypass suitable for high pressure differentials, with a pressure differential of up to 30MPa. The specific choice is determined by the factory. Multi stage pressure reducing M-type bypass bypasses the noise generated by high-speed flowing media to prevent valve components from being damaged by cavitation and flash evaporation.
● L-shaped Design: Facilitates precise fluid control and streamlined flow regulation within pipeline networks.
● Forged Construction: Provides excellent structural integrity and extended service life, designed to thrive under extreme operating conditions.
● Reliable Sealing: Ensures airtight safety and zero leakage accuracy, making it an indispensable part 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 provide excellent sealing performance in critical applications, ensuring zero leakage integrity under extreme conditions. The streamlined L-shaped design is specifically designed to improve space efficiency and can be seamlessly integrated in enclosed devices, while its forged body can reliably operate for decades in harsh industrial environments, providing robust elasticity.
Forging L-shaped three-way ball valves is the ultimate solution for industries that require precise flow management, optimized space configuration, and unwavering durability during intensive operating cycles.
