Import Di Check Valve — Buy in Bulk from Supplier in China

The Di Check Valve from Jilin Senfeng Pipe Co., Ltd. is a swing-type check valve designed for unidirectional flow control in fluid systems. It is constructed from ductile iron body with stainless steel disc and stem, and features a resilient rubber seat for tight shutoff. The valve operates under pressures up to 16 bar and temperatures from -10°C to 120°C, suitable for water, oil, and mild chemical media. Dimensions follow ISO 5752 and API 594 standards for face-to-face and end-to-end measurements.

The valve body is sand cast ductile iron, Grade 400-15, with a minimum wall thickness of 5 mm for sizes up to DN100. The disc is forged 304 stainless steel with a hard-facing coating of Stellite 6 on the sealing surface. The seat is EPDM rubber, compliant with FDA 21 CFR 177.2600 for potable water. Typical leakage rate is Class VI per ANSI/FCI 70-2, achieving zero visible leakage under test pressure. No formal certification is stated in the listing.

These valves are used in municipal water networks, chemical feed lines, and oil pump stations where backflow prevention is critical. Buyers include engineering contractors in Southeast Asia and industrial maintenance departments in North America. Packaging is in cartons with foam inserts and rust inhibitor. Trade terms are not specified, but FOB Dalian and CIF terms are common for this product category. MOQ is not stated and must be confirmed directly.

Jilin Senfeng Pipe Co., Ltd. operates from B-1, Jiancaijiayuan, Fukang Road, Panshi, Jilin, China. The listing provides no details on years in business, workforce size, production volume, or export history. Response rate and average response time are zero, indicating no buyer inquiries have been processed. The supplier is classified as harbor-tier, meaning basic identity verification is complete but no quality or compliance audits are published.

The company produces check valves for fluid systems but does not list certifications such as ISO 9001, API 6D, or CE. All technical claims are generic and not supported by documentation in the source. Buyers should treat this as a manufacturer with unverified production capability and no public track record of international shipments or quality control procedures.