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Low-Resistance Backflow Preventer for Municipal Water System Reliability
US$30.00-60.00
5 Pieces
Sample price:US$200.00/piece.Request sample
Product profile
Customization
AvailableMedia
WaterTemperature
Ordinary TemperatureModel NO.
LHS743XMaterial
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
Dual-Check Protection: Two check valves provide multiple barriers against backflow and back-siphonage.
Automatic Relief Valve: Automatically drains the middle chamber to create an air gap and prevent contamination.
Low Head Loss Design: Streamlined flow passage reduces resistance and boosts energy efficiency.
Durable Materials: Ductile iron body with stainless steel parts and NBR/EPDM rings for corrosion resistance.
ISO Certified Quality: Manufactured under ISO9001 standards with GS and CE certifications.
Hydraulic Operation: Operates automatically without external energy sources based on pressure differentials.
Customization Available: ODM and OEM services available with customization from designs.
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: ≤1.96h
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:
RPZ backflow preventers suit high-risk potable systems. Assess pipeline size, pressure, and hazard level. Double check valves for lower risks; RPZ types for max protection.
Q:Why are backflow preventers essential in municipal and building water systems?
A:
Backflow preventers are crucial for safeguarding drinking water from contamination through back pressure or siphonage. Required by most municipal codes and high-rise buildings, they ensure public health and prevent cross-connection risks.
Q:Can backflow preventers be used in fire protection systems?
A:
Yes. Specialized backflow preventers in fire protection systems prevent non-potable water from re-entering the municipal supply, ensuring safety while complying with fire protection and drinking water standards.
Q:How do backflow preventers improve safety in HVAC and industrial water systems?
A:
Backflow preventers protect chilled, heating, and process water systems from reverse flow contamination. They maintain water quality, prevent equipment corrosion, and ensure compliance with health and safety regulations in commercial and industrial settings.
Q:What materials are used for the valve body and internal components?
A:
The valve body is made of ductile iron, while internal components are stainless steel with NBR/EPDM sealing rings.
Send Inquiry
*To:
Shanghai Zentif Valve Group Co., Ltd.
Shanghai Zentif Valve Group Co., Ltd.*Content:
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