What certifications does this product hold?

The product holds GS, CE, ISO9001, EAC, FM, WRAS, SIL, and PED certifications.

What is the minimum order quantity?

The minimum order quantity is 500 pieces.

Durable Backflow Prevention Device for Reliable Water Supply Systems

Name: Durable Backflow Prevention Device for Reliable Water Supply Systems
Brand: Shanghai Zentif Valve Group Co., Ltd.
SKU: 1926708806

Shanghai, ChinaShanghai Zentif Valve Group Co., Ltd.

US$30.00-60.00

5 Pieces

Sample price:US$200.00/piece.Request sample

Product profile

Customization

Available

Media

Water

Temperature

Ordinary Temperature

Model NO.

LHS743X-16Q-DN100

Material

Cast Iron

Connection Form

Flange

Structure

Double Check with Relief Valve

Pressure

Ordinary Pressure

Function

Backflow Prevention and Water Supply Isolation

Sealing Form

Soft Sealing

Flow Direction

Unidirection

Standard

Application

Water Industrial Usage

Product Name

Low-Resistance Backflow Preventer

Model

Lhs743X

Valve Type

Backflow Preventer

Nominal Diametre

DN50-300

Nominal Pressure

Pn10-16

Working Temperature

0℃ ~ 80℃

Valve Body

Ductile Iron

Internal Component

Stainless Steel

Advantages-01

High Safety Backflow Protection

Advantages-02

Prevents Contamination & Water Hammer

Certification

GS, CE, ISO9001

Transport Package

Seaworthy Wooden Case

Specification

DN50-DN300

Trademark

Zentif

Origin

China

HS Code

8421199090

Production Capacity

50000

Key features

Dual Check Valve Protection: Provides multiple protection layers against backflow and back-siphonage.

Auto-Draining Relief Valve: Automatically manages chamber pressure and creates an air gap to prevent contamination.

Durable Ductile Iron Body: Ensures long-term durability and resistance to physical stress.

Corrosion-Resistant Components: Stainless steel parts and NBR/EPDM rings prevent corrosion and ensure reliable shut-off.

Low Resistance Design: Streamlined flow reduces head loss and enhances overall system efficiency.

Hydraulic Operation: Operates automatically without requiring external power sources.

Comprehensive Certifications: Certified by GS, CE, ISO9001, FM, WRAS, SIL, and PED for global compliance.

Wide Size Range: Available in nominal diameters from DN50 to DN300 for various applications.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceIn-stock CapacityFast Delivery

Shanghai Zentif Valve Group Co., Ltd.

Shanghai, China

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: ≤2.51h

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?

RPZ preventers are best for high-risk potable systems. Choose by size, pressure, hazard. Double check valves for lower risk; RPZ offers max protection.

Q:Why are backflow preventers crucial in municipal and building water systems?

Backflow preventers protect drinking water from contamination by back pressure or siphonage. Required by municipal codes and buildings to ensure public health and prevent cross-connection risks.

Q:Can backflow preventers be utilized in fire protection systems?

Yes. Specialized backflow preventers in fire protection systems stop non-potable water from re-entering 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?

Backflow preventers guard chilled, heating, and process water systems against 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?

The valve body is made of ductile iron, and internal components are made of stainless steel.