Though deck plates are no new invention, Beckson was the first to conquer all three safety features. First, a cover that would not open unexpectedly. Second, maximum water tightness. Third, prevent jamming closed or cross- threading that would prevent a cover from being closed.4" Deck Plate with Standard Trim Ring Replacement gasket = D4S-G
Outside Diameter: 6 1/8" (15.6 cm) Inside Diameter: 4" (10.2 cm) Hole Cut: 4 1/2" (11.4 cm)
Thin Rim with or without screw holes may be available in some color / material combinations. Thin rim OD is 5.625"
The Beckson Screw-Out Plate was designed to provide access without the use of tools, with a single start, non-jamming (no cross-thread), extra strong, self-cleaning buttress thread. They incorporate a self-aligning center and an innovative gasket to assure a watertight seal. A unique back-up sealing wall leaves the plate water resistant, even if the gasket is removed.
A screw-out plate should be used in compartments where a change in air pressure due to temperature or oil canning can occur. Deck plates also are used for access, inspection, and clean out for tanks and compartments, or just as a general access for shut-off valves or back- fastenings. Our clear center plates permit observation of controls or gauges and visual inspection without the necessity of removing the plate.