Duplomatic VD3-W1/30 in-line check valve, 3/8" BSP threads, cracking at 0.35 bar.
The VD3-W1/30 is a Duplomatic check valve for in-line mounting, with BSP (G 3/8") threads on both ends. It lets oil flow freely from A to B and blocks the opposite direction. The poppet is held closed by a spring and opens when the pressure at A exceeds the spring setting plus any pressure at B.
For HL or HM mineral oil. Fit the valve with inlet A on the side the oil comes from.
Source: Duplomatic VD*-W* technical catalogue, version 45 200/110 ED.
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