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Slow Closing Non Return Valve for Water Pump Discharge Pipelines
US$30.00-80.00
5 Pieces
Sample price:US$120.00/piece.Request sample
Product profile
Customization
AvailableTemperature
High TemperatureCertification
GS, CE, ISO9001Model NO.
ZFH745X-16Q-DN150Media
Gas, Oil, Water, AcidStandard
StandardConnection Mode
FlangePower
HydraulicMaterial
Ductile IronType
Self-OperatedProduct Name
Control ValveValve Type
Flow Control ValveFunction
Automatic Flow BalancingNominal Diameter
DN15- DN600Nominal Pressure
Pn16 / Pn25Flow Accuracy
±5%Working Temperature
0℃ ~ 150℃Control Range
Adjustable Flow RateValve Body
Ductile Iron / Cast Steel / Stainless SteelInternal Components
Stainless SteelSpring Material
Stainless SteelApplication
HVAC Systems Heating Systems Cooling Systems WaterAdvantages-01
Reduce Energy ConsumptioAdvantages-02
Automatic Flow Balancing Without Manual AdjustmentTransport Package
Wooden CaseSpecification
DN50-DN150(Customizable according to needs)Trademark
ZentifOrigin
ChinaHS Code
8421199090Production Capacity
500000Key features
Slow-Closing Mechanism: Reduces water hammer impact and shock noise during pump transitions.
Hydraulic Operation: Operates without external power or actuators using pipeline pressure.
Backflow Prevention: Automatically prevents reverse flow when the pump stops running.
Adjustable Speed: Pilot valves allow adjustable response speed for system commissioning.
Durable Material: Constructed from ductile iron with stainless steel internal components.
Certified Quality: ISO9001, CE, GS, and PED certified for safety and reliability.
Flanged Connection: DN15 to DN600 Y-pattern flanged design for secure pipeline installation.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Designs CertifiedExport Year: N/A CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.74h
About Our Factory & Business Background
AddressNo. 111 Huangjia Garden Road, Jiangqiao Town, Jiading District, Shanghai, China
Plant Area12819.22 square meters
Number of Employees81
Registered Capital55,484,089 RMB
Terms of PaymentLC, T/T, D/P, PayPal, Western Union, Small-amount payment
International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW
Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays
Minimum Order Quantity500 PICS
Supply Chain Partners12
Our Production Capability & Technical Expertise
Main Productsangle valve
Production Lines5
Production MachinesCNC Lathe, Lathe, Shot Blasting Facility, Vertical Lathe
QA/QC inspectors3 people
Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)
Inspection Method for Finished ProductsHave instructions and uniformly followed
R&D Engineers2 people
Traceability of Raw MaterialsYes
Our Industry Experience & Global Business Record
Year of Establishment2001-03-20
Main MarketsDomestic
Repeat Buyers Choice50%~80%
Number of Foreign Trading Staff4
Overseas Agent/BranchNo
New Products Launched in Last yearNo
Our Certifications, Standards & Industry Recognition
Cooperated with Fortune 500No
Product Q&A
Q:How to select the right valve for fluctuating pressure?
A:
In HVAC or high-rise systems, pressure instability is common. For stability, consider a Self-Operated Differential Pressure or Proportional Control Valve. They work without power, using a pilot to sense pressure changes, preventing over-pressure and ensuring terminal safety.
Q:Best way to prevent water hammer in fire systems?
A:
Fire pumps can cause a surge (water hammer) at startup, risking pipe bursts. The solution is a Multi-Functional Pump Control Valve or Water Hammer Arrestor Valve. These feature adjustable opening and slow-closing speeds, dissipating energy and safeguarding Fire Pump Rooms from shock.
Q:Are solenoid control valves durable for high-frequency automation?
A:
Solenoid valves may suffer coil burnout or seal wear with high-frequency use. Zentif's Solenoid Control Valves, featuring a diaphragm-based design, reduce friction and enhance response. Corrosion-resistant seals ensure bubble-tight performance in sewage or industrial wastewater, prolonging maintenance intervals.
Q:How to solve thermal imbalance in HVAC chilled water systems?
A:
Thermal imbalance stems from static hydraulic deviation. Install a Dynamic Balancing Electric Control Valve or Proportional Integral Electric Two-Way Valve for optimal results. These valves adjust flow based on real-time loads, maintaining constant flow despite pressure changes, eliminating hot/cold spots, and boosting energy efficiency.
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Shanghai Zentif Valve Group Co., Ltd.
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