ZDL series Automatic Recycle valve

Product Description

ZDL SERIES AUTOMATIC RECYCLE VALVE DESCRIPTION

ZDL series Automatic Recycle valve is a kind of pump protection device. It automatic protect centrifugal pump when pump body occur cavitation damage or unstable (especially conveying hot water at low load operation medium). Once pump flow is lower than the preseted flow, bypass can completely open to ensure the minimum required flow pump. Even running fully closed, namely running flow is zero, the minimum flow can also pass bypass for Automatic Recycle. Pressure reduced through the multistage bypass pressure reducing valve. ZDL series is suitable for bypass with medium or low pressure differential, maximum pressure differential is 6MPa, and specific choice is determined by factory.Unique L bypass can eliminated noise by made high-speed flow medium, and prevent cavitation.

CHARACTERISTICS

• Multi-cage type bypass, low noise, suitable for medium and low pressure working conditions.
• Forged valve body, can choose carbon steel or stainless steel material, etc.
• tandard bypass non-return function, maximum working pressure differential is 6MPa.
• With venturi port main flow non-return structure, adapt to complicated conditions.
• Pressure grade from PN16 to PN100, diameter from DN2to DN500.
• Can select manual bypass operation function, used in fault.

SIZE AND PRESSURE RANGE

• Body type: Three-way forged body. Nominal diameter: DN25, 32, 40, 50, 65, 80,100, 200, 250, 300, 350, 400, 450, 500.
• Nominal pressure: PN 16, 25, 40, 64, 100 CLASS 150, 300, 600 LB .
• End connection: Flange, FF, RF, RTJ, BW,SW etc.

Hebei Lufeng Piping Equipment Co., Ltd. is ISO 9001 certified exporter & supplier of steel piping materials. We are committed to provide customers quality products with competitive prices and efficiency service.

Established in 2008, our experienced and friendly staffs are dedicated to provide you professional and considerate services. Located in Cangzhou city—called “the manufacturing base of China pipe fittings” and near to Tianjin port, geographic and economic advantages enable Lufeng to provide customers good prices and delivery time.

Our pipeline products include steel pipes/ tubes, buttwelding fittings, steel flanges, forged fittings, valves, gaskets, fasteners and other accessories. They are strictly manufactured according to ISO, ASME, ASTM, ANSI, API, MSS, AWWA, DIN, BS, EN, JIS, GB and other international standards. Production as per customer’s drawings or requests is also available.

In early 2023, we opened a new warehouse for duplex stainless steel products. Used for storage of duplex stainless steel 2205 & 2507 round bars, steel plates, steel pipes and flange blanks. These materials are from the most professional manufacturers in China.

LUFENG will be at your service at any time. If you have any needs or requirements, please contact us freely. Look forward to be your long-term and trusted partners for pipeline in China.

Catalogue of LFPCO-2020.pdf

Letter of presentation.pdf