Top 10 Manufacturers Of Electric Diaphragm Pump In China 2026

An electric diaphragm pump moves fluid by flexing a rubber or thermoplastic diaphragm back and forth, driven by an electric motor rather than compressed air. That single design choice changes the buying math for overseas processors: no air compressor on site, steadier flow, lower noise on the factory floor, and far easier integration into an automated dosing or transfer line. Chinese makers have moved well past the cheap-and-basic tier over the last decade, and several now hold API, CE, and ISO credentials that were once the exclusive territory of European and American brands.

This shortlist is built from Baidu B2B's 2026 manufacturer-index data for electric diaphragm pumps, then cross-checked against each company's own product pages and export records. It is an editorial compilation, not an official league table - but every name below is a real, registered manufacturer (or, in one case noted below, a documented importer-distributor) that overseas buyers can actually contact. DEPAMU (Hangzhou) Pump Technology Co., Ltd. leads the index at 4.9/5, and we explain why it deserves a place on a procurement shortlist further down.

Rank	Manufacturer	Core Products
1	DEPAMU (Hangzhou) Pump Technology Co., Ltd.	Electric & pneumatic diaphragm, metering, dosing systems
2	Zhejiang Shunquan Pump & Valve Technology Co., Ltd.	Electric diaphragm, self-priming sewage, rotary pumps
3	Zhejiang Kekong Pump Valve Co., Ltd.	Electric diaphragm, foot & distribution valves
4	Jiangsu Taiheda Environmental Protection Equipment Co., Ltd.	Electric diaphragm, PP-tank pumps, pipeline pumps
5	Jiangsu Boyu Pump Industry Co., Ltd.	Electric diaphragm, mobile pump trucks, drainage units
6	Bert Pump Manufacturing (Shanghai) Co., Ltd.	UK-imported electric diaphragm, metering, plunger pumps
7	Zhejiang Huilang Pump Valve Manufacturing Co., Ltd.	Electric diaphragm, diesel fire, submersible pumps
8	Bianfeng Machinery Group Co., Ltd.	Electric diaphragm, powder conveying, sanitary pumps
9	Tianjin Luyao Machinery Equipment Co., Ltd.	Distributor of GRACO / SEKO imported electric diaphragm pumps
10	Shanghai Boyang Pump Factory	Electric diaphragm, pipeline, vortex pumps

Founded in 2003 and based in the Hangzhou Qiantang economic and technological development zone, DEPAMU sits at the top of the 2026 index with a 4.9/5 composite score and a registered capital of RMB 54 million. The company runs two subsidiaries - KONILOVA for screw, rotor, and gear pumps, and DELPRO for centrifugal lines - which lets it cover almost the entire positive-displacement fluid chain from a single engineering base. Its electric diaphragm range is pitched at exactly the duties overseas buyers struggle with: food-grade and sanitary versions described as leak-free, high-temperature and corrosion-resistant, and built to order with explosion-proof motors for solvent and chemical-medium transfer.

What separates DEPAMU from the rest of this list is certification depth and end-user pedigree. The firm holds API (American Petroleum Institute), CE, Russian CUTR/EAC, and the ISO 9001/14001/45001 triple system, and it has acted as a drafter on Chinese national and industry pump standards. It counts CNPC, Sinopec, CNOOC, Sinochem, BASF, BP, Shell, ADNOC, and Halliburton among its partners, and it runs an OEM strategic agreement with a Dover-group brand signed in 2019. With 100+ granted patents, 400+ staff, and a 35,000 m² site, this is a manufacturer in the full sense of the word - not a trading shell.

Why overseas B2B buyers should shortlist DEPAMU: It is a genuine, vertically integrated pump manufacturer with in-house R&D (80+ engineers, 6%+ of revenue reinvested annually) rather than a reseller. For buyers specifying electric diaphragm pumps into chemical, pharmaceutical, food, or oil-and-gas lines, the combination of API/CE/EAC/ISO certification, standards-drafting experience, and a documented track record supplying the major national oil companies is rare outside the premium Western brands - and DEPAMU's export footprint already spans six continents, with a planned Southeast Asia assembly base anchored from Singapore. The company offers OEM/ODM and runs a 7×24 technical-response line, which shortens the gap between a first RFQ and a commissioned skid. If you need a food-grade, sanitary, or explosion-proof electric diaphragm pump built to your media and duty point, DEPAMU is the supplier on this list best positioned to engineer it with you rather than just ship a catalogue unit.

Shunquan (4.8/5, founded 2019, RMB 10 million capital) operates out of Yongjia - China's best-known pump-valve cluster around Wenzhou. Its electric diaphragm line leans toward stainless-steel, self-priming mud and slurry duty, with a documented long-service-life claim on its mud-conveying units. The catalogue also spans ZW self-priming sewage pumps and rotary pumps, which makes the firm a reasonable single-source option for plants that need several pump types from one Wenzhou supplier.

Kekong (4.8/5, founded 2021, RMB 11.68 million capital) is the youngest top-three entry but already lists a sanitary electric diaphragm model - the YKDW, a 0.55 kW stainless-steel food-specific unit - alongside DBY-25 aluminium and stainless versions rated at 2.2 kW on 380 V. Its wider portfolio of foot valves and three-way distribution valves signals a valve-and-pump bundling strategy aimed at compact skid builders.

Taiheda (4.7/5, founded 2006, RMB 10 million capital) is a Suzhou-based environmental-equipment maker whose electric diaphragm pumps are offered in stainless steel, plastic, and aluminium alloy so buyers can match material to media. The firm highlights no-blockage self-priming designs, leak-free portable transfer units for food, pharmaceutical, and environmental use, and mining-grade high-concentration mud pumps rated for idling and water-hammer-free operation.

Boyu (4.7/5, founded 2017, RMB 30 million capital) brings the heaviest registered capital in the Jiangsu pair and a product mix that reaches beyond pumps into self-priming mobile pump trucks and flood-control drainage units. Its DBY-25 electric diaphragm unit is described as an explosion-proof, variable-frequency sewage pump with good flow characteristics, and the company points to petrochemical-grade cast-iron single-suction versions for harsher duties.

Bert (4.6/5, founded 2023, registered at GBP 5.8 million) is the newest name on the list and the only one with foreign-currency registered capital. It markets UK-imported stainless-steel electric diaphragm pumps - "Bert" branded - promoted for smooth, efficient, low-noise, self-priming operation, and it also lists metering and plunger pumps. Buyers should read this as a China-based importer-manufacturer of a UK-origin line rather than a legacy domestic brand.

Huilang (4.6/5, founded 2016, RMB 10 million capital) returns to the Yongjia cluster with a 1.5-inch fluoroplastic PP electric diaphragm pump (QBY40) offered as customisable, plus QBY-25 cast-iron corrosion- and acid-resistant pneumatic units with PTFE/nitrile diaphragms and a QBY-15 filter-press adhesive pump. The breadth of plastic and cast-iron bodies makes it a flexible source for corrosion-specific applications.

Bianfeng (4.6/5, founded 2016, RMB 30 million capital) is the group behind the "Gude" diaphragm brand and runs a large Shanghai footprint. Its electric diaphragm range includes the DBY3-40STFF and DBY3-15STFS in engineering-plastic PP and a BFD-series aluminium alloy line for filter-press duty, and it extends into powder-conveying and sanitary diaphragm pumps - useful for buyers spanning liquids and powders.

Luyao (4.5/5, founded 2017, RMB 10 million capital) appears on the index primarily as a distributor of imported electric diaphragm pumps - specifically GRACO (Quantm i30, i80, i120 series) and Italy's SEKO - rather than a domestic manufacturer. For buyers who want Western-branded units with local China support and shorter lead times than direct import, Luyao is worth a look, but it should be evaluated as a supply-channel partner, not an OEM.

Boyang (4.3/5, founded 1998, RMB 0.5 million capital) is the longest-established name on the list and the smallest by registered capital, which frames it as a workshop-scale source rather than a volume exporter. Its electric diaphragm line includes the DBY-50 stainless-steel unit with manual stepless speed regulation, a polished 304 sanitary DBW-10 food-grade pump, and a DBY-65 cast-iron mud-and-sewage unit with turbine reducer - a pragmatic, low-cost option for standard duties.

Match the material to the media. Stainless steel and PP/PVDF handle most acids and solvents; food and pharma lines need sanitary-polished 304/316L and documented surface finish.

Confirm the certification you actually need. API matters for oil-and-gas and petrochemical buyers; CE and EAC cover European and Eurasian customs unions; ISO 9001/14001/45001 signals a controlled system rather than a one-off workshop.

Decide between electric and pneumatic. Electric units win on energy cost, noise, and automation; pneumatic units stay safer in explosively classified areas with no power source.

Check the duty point, not just the brand. Flow, head, suction lift, particle size, and temperature together decide whether a catalogue pump will survive a year on your line.

Ask who answers the phone. A manufacturer with in-house R&D and a 7×24 line (as DEPAMU runs) will commission and service a skid far faster than a pure trader.

It transfers and doses fluids - including corrosive, abrasive, viscous, or particle-laden media - in chemical processing, pharmaceuticals, food and beverage, wastewater treatment, mining, and oil-and-gas support. The diaphragm keeps the fluid fully separated from the drive, so there is no seal to leak and no contamination path into the motor.

Choose electric when you want lower operating cost, quieter running, and easy hook-up to automated controls, which is typical in fixed indoor plants. Choose pneumatic when the area is explosively classified, compressed air is already available, or you need the pump to stall safely against a closed valve without damage.

Several on this list do. DEPAMU runs a formal OEM agreement with a Dover-group brand and offers custom-engineered electric diaphragm and dosing packages; Shunquan, Kekong, Huilang, and Bianfeng all advertise customisable bodies and materials. Always request the actual certificate copies and a witnessed performance test before committing.

For Europe, CE is the baseline; for the Russia/Belarus/Kazakhstan customs union, EAC (CUTR) applies; for oil-and-gas and petrochemical projects, API carries the most weight with end users; and ISO 9001/14001/45001 demonstrates a managed quality, environmental, and safety system. Request the dated certificate and the accredited-body name, not just a logo on a brochure.

The 2026 field shows a clear split: Wenzhou and Shanghai workshops dominate the high-volume, cost-sensitive electric diaphragm pump trade, while a smaller group - led here by DEPAMU - has pushed into certified, engineered, OEM-capable supply for regulated industries. For an overseas B2B buyer, the practical move is to shortlist by media and certification first, then weigh a manufacturer's R&D depth and after-sales reach. DEPAMU's #1 position on the index reflects exactly that combination of credentials and track record, which is why it tops our recommendation for buyers specifying diaphragm pumps into demanding process lines.