Specification

DN100 PN16 Lug Type Double Disc Swing Check Valve

I. Product Overview

NEWWAY lug type double disc swing check valve is a high-performance flow control device designed to prevent reverse flow in industrial pipelines. Featuring a dual-disc structure and lug-type connection, it combines compact design with reliable non-return functionality. Constructed from diverse materials (carbon steel, stainless steel, alloys) to suit media properties, it complies with international standards like API 594 and ANSI B16.10. Ideal for handling water, steam, oil, and corrosive fluids, it ensures system safety and efficiency across metallurgy, power, petrochemical, and light industrial sectors.

II. Key Attribute Parameters

Size Range: 2″~60″ (DN50~DN1500), covering small to extra-large pipelines to meet flow requirements in equipment lines, main transmission networks, and industrial loops.

Pressure Rating: 150LB~2500LB (PN16~PN420), with PN16 (1.6MPa) as a common specification, adapting to low, medium, and high-pressure systems.

Temperature Range: -196℃~540℃, varying by material—e.g., stainless steel (304/316) for cryogenic to moderate high temps; alloy steel (WC6/WC9) for 540℃ high-temperature steam.

Material Configuration:

Body: Carbon steel (WCB), stainless steel (CF8/CF8M), duplex stainless steel, or alloys (Monel, Alloy 20) for corrosion resistance.

Disc & Seat: Renewable split discs (stainless steel/bronze) with precision sealing surfaces; seats matched to body material for tight contact.

Trim: Pins and hardware in corrosion-resistant materials (316 stainless steel) to avoid jamming.

Connection Type: Lug-type (compatible with flange pipelines per ANSI B16.5/16.47), enabling installation in any orientation (horizontal/vertical) without disconnecting pipelines.

Standards Compliance: Design per API 594; face-to-face dimensions per ANSI B16.10; testing per API 598; certified with ISO 9001, CE, API 6D for quality assurance.