ZDM series automatic circulation pump protection valve is a pump protection device. It automatically protects some of the cavitation damage and instability that may occur in the pump body during the low load operation of the centrifugal pump (especially for conveying hot water medium). Once the pump flow is lower than the preset flow, the bypass is fully opened to ensure that the pump requires the minimum flow. Even if the main road is completely closed, ie the main road flow is zero, the minimum flow can also be automatically cycled through the bypass. Pressure is reduced by the integrated multi-stage throttle relief valve in the bypass. The ZDM series has a bypass suitable for high differential pressure, and the pressure difference is up to 30 MPa. The specific choice is determined by the factory. The multi-stage pressure-reducing M-type bypass bypasses the noise generated by high-speed flowing media and prevents cavitation and flashing from damaging valve components.
● L-shaped Design: Facilitates precise fluid control and streamlined flow regulation within piping networks.
● Forged Construction: Delivers exceptional structural integrity and extended service life, engineered to thrive under extreme operational conditions.
● Reliable Sealing: Ensures airtight security with zero-leak precision, making it indispensable for mission-critical 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 valve delivers exceptional sealing performance in critical applications, guaranteeing zero-leak integrity under extreme conditions. The streamlined L-shaped design, crafted for spatial efficiency, enables seamless integration in confined installations, while its forged body provides rugged resilience for decades of reliable operation in harsh industrial settings.
The Forged L-shaped Three-way Ball Valve stands as the ultimate solution for industries demanding precision flow management, space-optimized configurations, and unwavering durability across intensive operational cycles.
