Import Constant Flow Pump — Buy in Bulk from Supplier in China

Constant flow pumps are positive displacement pumps designed to deliver precise, repeatable fluid volumes regardless of pressure changes. This model achieves flow accuracy better than ±0.1%, making it suitable for applications requiring stable dosing, such as chemical feed, water treatment, and food processing. The pump operates via a motor-driven piston or diaphragm mechanism with minimal dead volume to reduce fluid waste and improve repeatability.

The pump handles viscous, corrosive, and abrasive fluids, suggesting construction with chemically resistant materials such as PTFE, stainless steel 316L, or ceramic components. Internal seals are likely perfluoroelastomer (FFKM) or EPDM, depending on fluid compatibility. No specific pump type (diaphragm, piston, peristaltic) is stated, but the low dead volume and high accuracy point to a diaphragm or piston design. No material certifications are listed in the source.

Buyers in chemical processing, pharmaceutical formulation, and irrigation control systems commonly use this pump. It is not intended for high-pressure hydraulic use. Packaging and shipping details are unconfirmed. Minimum order quantity and lead time are not stated. Buyers must confirm material compatibility with their fluid, required flow rate range, and pressure limits. All technical claims require direct validation with the supplier.

Hangzhou Yanshan Import & Export Trade Co., Ltd. is a trading company based in Hangzhou, Zhejiang Province, with an office address listed in Jiahui Building. The supplier is classified as 'imported' and 'harbor-tier', indicating export activity but no verified manufacturing capability. No factory location, production capacity, or quality control processes are disclosed. The listing does not mention certifications, staff size, or years in business.

This entity acts as a commercial intermediary for fluid handling equipment, sourcing products from undisclosed manufacturers. There is no evidence of engineering support, in-house testing, or product development. Buyers should treat this as a distributor, not a manufacturer. Request documentation of the actual production origin and ask for test reports on flow accuracy and material compatibility before purchase.