WQDS STAINLESS STEEL SEWAGE SUBMERSIBLE PUMP

Component

Pump Body: Cast Iron
Motor Housing: AISI304
Impeller: Cast Iron
Motor Shaft: 45# Steel
Mechanical Seal: Ceramic/Graphite
Cable: 10m cable with plug

Operating Condition

Liquid Temperature up to 40°C
Ambient Temperature up to 40°C
5m maximum immersion depth

Motor

1~220V/50Hz, 110V/60Hz, 220V/60Hz on request
Insulation Grade: Class B
Protection: IPX8
Continuous Work S1

Model Parameters

Product Summary

The WQDS Stainless Steel Sewage Submersible Pump from ZHEJIANG CGO CO.,LTD. is a compact, fully submersible electric pump built for reliable sewage and wastewater transfer across residential, commercial, and light industrial environments. The WQDS stainless steel sewage pump combines an AISI304 stainless steel motor housing with a cast iron pump body — a material pairing that delivers corrosion resistance where it matters most while keeping structural weight and cost in check. Available in seven models from 0.25 kW to 2.2 kW, this submersible sewage pump series covers flow rates of 3 to 26 m³/h and heads up to 15 meters, providing a versatile drainage solution for procurement teams who need proven performance across diverse site conditions.

Detailed Description

The WQDS sewage submersible pump integrates the pump unit, mechanical seals, and motor into a sealed, fully submerged assembly rated for immersion depths up to 5 meters. That single-unit design removes the need for separate priming systems, above-ground motor mounting, or external shaft protection — cutting both installation time and the physical footprint required in tight utility spaces like basement sump pits, underground collection chambers, and construction site drainage sumps.

Where the WQDS stainless steel sewage pump stands apart from standard all-cast-iron designs is the AISI304 motor housing. In environments where the pump cycles frequently — drawing the sump down until the motor is partially exposed to air between runs — AISI304 surfaces resist oxidation measurably better than bare cast iron. ZHEJIANG CGO CO.,LTD. specifies AISI304 for the motor housing to address wet-dry cycling, coastal salt air, and residual cleaning agent exposure. The pump body and impeller remain cast iron for structural wear resistance, and the ceramic/graphite mechanical seal reduces frictional heat through extended start-stop cycling.

Key Product Features

• AISI304 stainless steel motor housing for meaningful corrosion resistance in humid, coastal, and marine-adjacent environments

• Cast iron pump body and impeller for structural durability in continuous sewage and wastewater service

• Ceramic/graphite mechanical seal for reliable shaft protection through extended start-stop duty cycling

• IPX8 waterproof motor rating for full continuous submersion to 5 meters in S1 duty

• Class B insulation supports winding thermal stability at rated liquid temperatures up to 40°C

• Single-phase or three-phase configurations: 220V/50Hz standard; 110V/60Hz and 220V/60Hz available on request

• 10-meter pre-installed power cable for deeper pit installations without intermediate cable junction work

• Seven models from 0.25 kW to 2.2 kW covering flow rates of 3 to 26 m³/h for diverse drainage demands

Engineering Advantages

From an engineering standpoint, the WQDS series closes a specification gap that procurement teams face when sourcing electric sewage pumps for mixed installation environments. Cast iron motor housings are cost-effective for most drainage applications, but where pumps cycle repeatedly and the motor exterior is exposed to humid air between runs, surface oxidation progresses faster on bare cast iron than on AISI304. The WQDS stainless steel submersible pump is engineered for exactly that scenario.

The seven-model lineup was designed to cover a wide performance band while keeping the product family coherent. The compact WQDS3-7-0.25 (190×140×380 mm, 0.25 kW) fits confined residential sump pits where installation clearance is tight. At the other end, the WQDS26-10-2.2 scales up to 2.2 kW with a 3-inch outlet and 26 m³/h flow capacity for construction site and light industrial drainage — while the same installation methodology applies across the whole range. That design consistency genuinely matters for field service teams managing mixed equipment fleets.

ZHEJIANG CGO CO.,LTD. specifies IPX8 motor protection and Class B insulation across the WQDS electric sewage pump line, meeting the submersion and thermal standards that international B2B procurement specifications routinely require for continuous-duty wastewater equipment. The 10-meter cable also extends reach beyond the 8 meters standard on comparable cast-iron-only models, adding practical installation flexibility for deeper sump configurations.

Primary Applications

The WQDS stainless steel sewage pump is deployed across industries and site types where drainage reliability and material durability both matter:

• Residential: basement and cellar sump drainage, garden pond transfer, greywater collection from laundry and washing facilities

• Commercial buildings: underground carpark water removal, hotel basement drainage, hospital facility wastewater lift stations

• Construction sites: groundwater removal from active excavations, surface runoff clearance during foundation and basement work phases

• Food processing adjacent: drainage in areas where cleaning agent residues or organic vapors make AISI304 stainless steel housing preferable to bare cast iron

• Coastal and marine-adjacent: harbourside utility rooms, boat yards, and coastal hospitality facilities where persistent salt air is a factor

Commercial Value

For international distributors, OEM partners, and B2B procurement teams sourcing submersible sewage pumps at volume, the WQDS series from ZHEJIANG CGO CO.,LTD. holds a clear market position: the AISI304 stainless steel motor housing provides a tangible material upgrade over standard cast iron sewage pump designs, at a competitive price point within the stainless steel sewage pump segment. Keeping the pump body and impeller in cast iron holds production cost in check while delivering the specification upgrade that engineers and facility managers need for demanding drainage environments.

Six of the seven models — WQDS3-7-0.25 through WQDS10-15-1.5 — share a 2-inch outlet, which means consistent discharge piping specs across most of the lineup. Distributors carrying multiple models benefit from simplified inventory, standardized installation documentation, and a single piping specification for the majority of deployments. The WQDS26-10-2.2’s 3-inch outlet clearly distinguishes the high-flow model for larger applications.

ZHEJIANG CGO CO.,LTD. supports volume procurement, OEM labeling, and multi-voltage configurations.

FAQ

Q: What makes the WQDS different from the standard WQD sewage submersible pump?
A: The core distinction is the motor housing material. The WQD sewage submersible pump uses cast iron for the motor housing, while the WQDS stainless steel sewage pump uses AISI304 stainless steel. This makes the WQDS a better specification for environments with salt air, frequent wet-dry cycling, or residual chemical exposure that accelerates surface degradation on uncoated cast iron.

Q: What is the maximum immersion depth for the WQDS sewage pump?
A: The WQDS electric sewage pump is rated for up to 5 meters maximum immersion depth. The 10-meter pre-installed cable provides sufficient reach for pit depths within that range, with cable length remaining for topside connection without splicing.

Q: What voltage and frequency configurations are available for export markets?
A: Standard supply is 1~220V/50Hz. ZHEJIANG CGO CO.,LTD. also offers 110V/60Hz and 220V/60Hz on request, covering grid requirements across North America, South America, Southeast Asia, and most European markets.

Q: Do the WQDS models share compatible discharge fitting sizes?
A: Six models — WQDS3-7-0.25 through WQDS10-15-1.5 — use a 2-inch outlet, enabling consistent discharge piping across most of the series. The WQDS26-10-2.2 uses a 3-inch outlet to accommodate its higher 26 m³/h flow rate, which is clearly indicated in the model parameters table above.