Product Catalog

Fluoropolymer-Lined Dual-Plate Wafer Check Valve (H76F46)

Industrial valves and fittings dispatch fast — wear parts and complete machines quoted on request.

Lined Valves

Fluoropolymer- and rubber-lined valves for acid, alkali and corrosive service — gate, globe, butterfly, diaphragm, check and Y-strainer, DN15 to DN1200 at PN0.6–1.6 MPa. The lining is the working surface: it suits corrosive media but not abrasive slurry, and it is the part that fails if the valve is throttled or run dry. Lining grade (PTFE, FEP or PFA) and body material are confirmed per order.

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Lined dual-plate wafer check valve: the two spring-loaded half-discs sit in the bore and close within a few degrees of flow reversal, well before a swing disc would, so the surge on pump stop is smaller and the valve can be mounted between standard pipe flanges with one set of bolts. Sizes DN40 to DN600 at PN1.0 and PN1.6 MPa. Because the plates close fast, this is the right check ahead of a pump discharge where water hammer is a real concern — but the springs and hinge pins are wetted parts, so confirm the lining and spring material against the actual medium before ordering.

General Specifications

Size RangeDN40 – DN600
Pressure RatingPN1.0 / PN1.6 MPa
TypeDual-plate wafer check, spring loaded
InstallationBetween pipe flanges, horizontal or vertical
Max. Working Temperature-20 – 120 °C (F46 lining); ≤ 85 °C (rubber lining)
Mediaacid / alkali / chemical

Materials & Coating

BodyCarbon steel WCB
LiningFEP (F46) on body bore and plate faces; PTFE (F4) on request
Wetted partsPlates, hinge pins and springs — confirm against medium

Applications

Pump discharge non-return Water hammer prone headers Compact retrofit between flanges Corrosive transfer lines

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