What is the minimum order quantity?

The minimum order quantity is 500 pieces.

What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and Small-amount payment.

What is the lead time for production?

The average lead time is within 15 workdays for both peak and off-season periods.

High Efficiency Flanged Backflow Preventer for Industrial Applications

Name: High Efficiency Flanged Backflow Preventer for Industrial Applications
Brand: Shanghai Zentif Valve Group Co., Ltd.
SKU: 1926946316

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 with Relief Valve: Multi-layer protection with auto-draining relief valve to manage chamber pressure effectively.

Durable Ductile Iron Body: Ensures long-lasting durability and resistance against harsh industrial environments.

High Safety Backflow Protection: Prevents contamination and water hammer by stopping backflow and back-siphonage.

Low Head Loss Design: Streamlined flow design reduces pump energy consumption and elevates system efficiency.

Corrosion Resistant Parts: Stainless steel internal components and NBR/EPDM rings resist corrosion and ensure tight shut-off.

Hydraulic Operation: Operates automatically based on pressure differentials without requiring external power.

Wide Application Range: Suitable for municipal water, fire protection, HVAC, and industrial water treatment systems.

Certified Quality: Complies with GS, CE, ISO9001 standards for safety and reliability in critical 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: ≤2.11h

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 choose the right backflow preventer?

For potable systems, RPZ suits high-risk. Check size, pressure, hazard. Double check valves for lower risk; RPZ offers top protection.

Q:Why are backflow preventers crucial in water systems?

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, preventing cross-connection risks.

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

Yes. Specialized backflow preventers in fire systems stop non-potable water from re-entering municipal supplies, 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 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 is the warranty period for this product?

We provide a comprehensive 2-year warranty for all our mechanical equipment.