Early top mount double check valve

[NW Mailing List]

Many of N&W's early version locos (E2, M, M2, K1, K2, K3, Z1) used a top mount double check valve where the pipes entered the valve body from the rear, rather than the sides.



 Would anyone know who made this valve? Has anyone ran across a drawing of this style of check valve in the archives?

Jimmy Lisle
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