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Quality Backflow Preventer Valve for Effective Water Supply Protection
US$30.00-60.00
5 Pieces
Sample price:US$200.00/piece.Request sample
Product profile
Customization
AvailableMedia
WaterTemperature
Ordinary TemperatureModel NO.
LHS743X-16Q-DN100Material
Cast IronConnection Form
FlangeStructure
Double Check with Relief ValvePressure
Ordinary PressureFunction
Backflow Prevention and Water Supply IsolationSealing Form
Soft SealingFlow Direction
UnidirectionStandard
GBApplication
Water Industrial UsageProduct Name
Low-Resistance Backflow PreventerModel
Lhs743XValve Type
Backflow PreventerNominal Diametre
DN50-300Nominal Pressure
Pn10-16Working Temperature
0℃ ~ 80℃Valve Body
Ductile IronInternal Component
Stainless SteelAdvantages-01
High Safety Backflow ProtectionAdvantages-02
Prevents Contamination & Water HammerCertification
GS, CE, ISO9001Transport Package
Seaworthy Wooden CaseSpecification
DN50-DN300Trademark
ZentifOrigin
ChinaHS Code
8421199090Production Capacity
50000Key features
ISO-Certified Safety: ISO9001, CE, GS certified for reliable backflow prevention in municipal and industrial systems.
Dual-Check Protection: Layered protection with auto-draining relief valve prevents contamination and water hammer.
Durable Construction: Ductile iron body with stainless steel internal components ensures long-term corrosion resistance.
Low Resistance Design: Streamlined flow and straight design reduce head loss and enhance hydraulic efficiency.
Versatile Applications: Suitable for municipal drinking water, fire protection, HVAC, and landscape irrigation systems.
OEM/ODM Customization: Customization available from designs with flexible model and dimension options.
Reliable Sealing: NBR/EPDM rings provide reliable shut-off and prevent leakage in high-pressure scenarios.
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: ≤2.15h
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 backflow preventer for water supply systems?
A:
For potable systems, RPZ preventers suit high-risk. Check size, pressure, hazard. Double check valves for lower risk; RPZ offers top protection.
Q:Why are backflow preventers crucial in municipal and building water systems?
A:
Backflow preventers protect drinking water from contamination by back pressure or siphonage. They are mandated by most municipal codes and high-rise buildings to ensure public health and prevent cross-connection risks.
Q:Can backflow preventers be utilized in fire protection systems?
A:
Yes. Specialized backflow preventers in fire protection systems stop non-potable water from re-entering the municipal supply, ensuring safety and compliance with fire and drinking water standards.
Q:How do backflow preventers enhance safety in HVAC and industrial water systems?
A:
Backflow preventers shield chilled, heating, and process water systems from reverse flow contamination. They preserve water quality, prevent equipment corrosion, and ensure compliance with health and safety regulations in commercial and industrial settings.
Send Inquiry
*To:
Shanghai Zentif Valve Group Co., Ltd.
Shanghai Zentif Valve Group Co., Ltd.*Content:
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