Import Bs 1868 Swing Check Valve — Buy in Bulk from Supplier in India

The SQK Valves Fittings & Automation Private Limited BS 1868 Swing Check Valve is a bolted-bonnet, hinged-disc non-return valve built to the British Standard 1868 specification for oil, gas, and general fluid service. It prevents reverse flow in horizontal or vertical upward-flowing pipelines by allowing forward flow to lift the disc off its seat, then swinging it shut on flow reversal. The standard covers Class 150 through Class 2500 pressure-temperature ratings, with carbon steel, alloy steel, and stainless steel body options typical for this construction. End connections are usually raised-face or ring-joint flanged, though butt-weld ends are also covered under the standard for high-integrity piping.

Body material for this valve category is typically ASTM A216 WCB carbon steel for general service, ASTM A352 LCB/LCC for low-temperature duties, or ASTM A217 WC6/WC9 for elevated-temperature creep resistance. The disc and seat ring often use 13% chromium stainless steel overlays (Stellite or equivalent) to resist galling and erosion in high-velocity reverse-flow conditions. Hinge pin and disc nut materials must match or exceed body corrosion resistance to prevent seizing. Spring-assisted or lever-and-weight external closing aids are optional configurations not mentioned in the source but common in BS 1868 variants. Face-to-face dimensions follow BS 1868 Table 2 for flanged valves, ensuring interchangeability with API 6D and ASME B16.10 layouts in most sizes.

Typical buyers include EPC contractors for oil and gas upstream facilities, water treatment plant operators, chemical process licensors, and shipyard piping departments. The valve suits hydrocarbon pipelines, boiler feedwater systems, cooling water circuits, and refinery process lines where backflow could damage pumps or contaminate upstream equipment. SQK's valve does not specify pressure class, size range, or material grade in the source description, so buyers must request a formal material specification and design data sheet before technical bid evaluation. Incoterms and certification claims in the source should be treated as unverified until supported by documentary evidence from the supplier.

SQK Valves Fittings & Automation Private Limited is an India-based supplier of industrial valves and automation equipment, listed with an imported supplier tier and harbor trust designation. The company name suggests specialisation in valves, fittings, and automation components, though no factory location, ISO certification, or specific manufacturing scope is detailed in the source material. The response rate shows 0.00% with zero average response hours, indicating that direct outreach may be unreliable through the platform messaging system alone.

Buyers should note that the source description attributes ISO and SGS compliance to the product, but no certificate numbers or scope statements are provided. Any claim about SQK's years in operation, installed base, or client list would be fabricated. For a valve destined for pressure-piping service, third-party witness inspection and material traceability are more important than supplier-tier labels. Request SQK's quality manual, welding procedure specifications, and NDE qualifications before accepting any technical bid.