What payment methods are accepted?

We accept T/T, L/C, PayPal, and Western Union.

What certifications does the pump have?

The pump is certified with ISO9001:2008 and CE.

1/2 Inch 57lpm PP Air Operated Double Diaphragm Pump

Name: 1/2 Inch 57lpm PP Air Operated Double Diaphragm Pump
Brand: Wenzhou Defu Machinery Co., Ltd.
SKU: 714461275

Zhejiang, ChinaWenzhou Defu Machinery Co., Ltd.

US$298.00

2-4 Sets

US$283.10

5-9 Sets

US$268.20

10-19 Sets

US$238.40

20+ Sets

Product profile

Customization

Available

After-sales Service

Remote Guidance

Warranty

1 Year

Model NO.

QBK15PP-TF-TF-PP

Certification

ISO9001:2008, CE

Rated Current

Voltage

Material

Plastic

Power

Pneumatic

Valve Body Type

Diaphragm

Function

Pneumatic Type

Diaphragm Material

Poly Ethylene Forty-Six

Performance

Corrosion

Fluid Chamber

Polypropylene or PVDF, SS304 or SS316, Al

Diaphragm

PTFE or Santoprene, Viton etc

Ball Valve

PTFE or PP

Ball Seat

PTFE or PP

Max Flow

57 Lpm

Max Head

70 M

Max Pressure

7 Bar

Inlet & Outlet

Thread BSPT or NPT

Max Suction Lift

Dry 4m, Wet: 7.6m

Max Particle Dia

2.5mm

Air Inlet

3/8 Inch

Max Air Pressure

8.4 Bar

Transport Package

Carton for Qbk15PP-TF-TF-PP

Specification

9.8 kg for 0.5inch PP pump

Trademark

DEFU

Origin

China

HS Code

8413910000

Production Capacity

10000PCS/Year

Key features

Customizable Fluid Chamber: Fluid chamber available in Polypropylene, PVDF, SS304, or SS316.

High Max Flow Rate: Maximum flow rate reaches 57 Lpm for efficient pumping.

High Max Head: Capable of lifting liquid up to 70 meters.

Corrosion Resistant: Designed with corrosion performance for harsh media.

Fast Delivery: Standard delivery time is 5-7 working days.

Comprehensive Warranty: 1 year warranty for pump body, 3 months for main parts.

CE & ISO Certified: Certified with ISO9001:2008 and CE standards.

Company profile

Wenzhou Defu Machinery Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2018-03-23Nearest Port: shanghai,ningboAverage Response Time: ≤3.01hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryWenzhou Defu Machinery Co., Ltd. is a China-based limited company in Wenzhou, Zhejiang, described both as a trading company and manufacturer/factory. Its business centers on industrial pumps and related equipment, with production bases in Shanghai, Zhejiang, and Jiangsu and reported manufacturing relationships or acquisitions that may broaden capability. The supplier reports ISO 9001 certification, seven production lines, 6–10 R&D engineers, and 6–10 quality-control staff. It serves multiple international markets, began exporting in 2018, and reports standard delivery terms of within 15 working days in off-peak periods and one month in peak periods. Evidence is insufficient to confirm after-sales service, customization, financial credibility, or a substantial customer track record. One trade record and one named buyer are provided, but this does not establish broad customer-case experience.

Supplier typeThe supplier is legally identified as Wenzhou Defu Machinery Co., Ltd., a limited company in Zhejiang, and is classified as both a trading company and manufacturer/factory. Its stated pump R&D, manufacturing, sales activities, production bases, acquisitions, and OEM relationship support a combined manufacturer-trader profile rather than a pure trading intermediary.

CertificationsThe supplier reports holding ISO 9001 certification for its management systems. No certification number, issuing body, validity period, or additional product certifications are provided, but the stated ISO 9001 holding is explicit evidence of certification.

R&D capabilityThe company states that it is dedicated to pump research and development, reports 6–10 R&D engineers, and has expanded through acquisitions and production bases in multiple provinces. These facts indicate some organized R&D and capability-development activity, although no patents, new-product records, testing facilities, or specific innovations are provided.

Production capacityProduction capability is supported by the manufacturer/factory classification, seven reported production lines, production bases in Shanghai, Zhejiang, and Jiangsu, a broad pump portfolio, and stated order fulfillment within 15 working days off-season and one month during peak season. The stated acquisition and OEM activities further support manufacturing involvement.