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Dual Check Backflow Preventer with Intermediate Pressure Relief Assembly
US$30.00-60.00
5 Pieces
Sample price:US$200.00/piece.Request sample
Product profile
Customization
AvailableMedia
WaterTemperature
Ordinary TemperatureModel NO.
HS41XMaterial
Cast IronConnection Form
FlangeStructure
Dual Check with Intermediate Relief AssemblyPressure
Ordinary PressureFunction
Backflow Prevention and Water Supply IsolationSealing Form
Soft SealingFlow Direction
UnidirectionStandard
GBApplication
Water Industrial UsageProduct Name
Reduced Pressure Zone Backflow PreventerModel
HS41XValve 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
Robust Backflow Protection: Dual check assemblies with intermediate relief prevent contamination and water hammer.
Self-Operated Design: No electricity or external actuator required for automatic pressure relief.
Corrosion Resistant: Ductile iron body with stainless steel stems and springs ensures durability.
Wide Size Range: Available in nominal diameters from DN50 to DN300 for various applications.
Reliable Sealing: NBR/EPDM seals provide reliable closing and prevent leaks.
Multiple Certifications: Certified by GS, CE, ISO9001, FM, WRAS, SIL, and PED standards.
Customization Available: ODM and OEM services available with customization from designs.
Stable Installation: Flanged ends ensure secure and stable connection in pipelines.
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: ≤1.99h
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 water, RPZ backflow preventers are ideal for high-risk uses. Factor in pipeline size, pressure, and hazard. Double checks suit lower risks; RPZs offer top protection.
Q:Why are backflow preventers essential in municipal and building water systems?
A:
Backflow preventers protect drinking water from contamination due to back pressure or siphonage. They are required in most municipal codes and high-rise buildings for public health and to prevent cross-connection risks.
Q:Can backflow preventers be used in fire protection systems?
A:
Yes. Specialized backflow preventers are essential in fire protection systems to stop non-potable water from re-entering the municipal supply, ensuring system safety and adhering to strict standards.
Q:How do backflow preventers improve safety in HVAC and industrial water systems?
A:
Backflow preventers guard chilled, heating, and process water systems against reverse flow contamination. They maintain water quality, prevent corrosion, and ensure regulatory compliance 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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