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.

Low-Resistance Backflow Prevention Device for Enhanced Water Supply Safety

Name: Low-Resistance Backflow Prevention Device for Enhanced Water Supply Safety
Brand: Shanghai Zentif Valve Group Co., Ltd.
SKU: 1926787656

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 Safety Design: Layered protection with auto-draining valve to prevent backflow and water hammer.

High Durability Materials: Ductile iron body and stainless steel components resist corrosion and ensure longevity.

Energy Efficient Flow: Streamlined design reduces head loss and enhances hydraulic efficiency.

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

Versatile Applications: Ideal for municipal water, HVAC, fire protection, and industrial systems.

Customization Support: ODM and OEM services available with customization from client designs.

Wide Size Range: Available in DN50 to DN300 to fit various pipeline requirements.

Strict Quality Control: 100% visual and functional inspection with full raw material traceability.

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 choose the right backflow preventer?

RPZs suit high-risk potable systems. Check size, pressure, hazard. Double checks for lower risk; RPZ offers top protection.

Q:Why are backflow preventers vital?

They protect water from contamination by pressure or siphonage. Mandated by codes for health and cross-connection prevention.

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

Yes. Specialized backflow preventers in fire systems stop non-potable water from re-entering the municipal supply, ensuring safety and compliance with standards.

Q:How do backflow preventers boost safety in HVAC and industrial systems?

Backflow preventers shield chilled, heating, and process water systems from reverse flow contamination, maintaining water quality, preventing equipment corrosion, and ensuring compliance with regulations in commercial and industrial settings.

Q:What is the warranty period?

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