in line oil check valve

[Garry ColesParticipant @garrycoles69390]

Hi,

The loco I’m building has piston valves and each piston valve cylinder has two oil points. If I come out of the mechanical lubricator with one 1/8″ pipe and into a Tee piece with two outlets of 1/16″ pipe into the piston valve cylinders will this be acceptable lubrication. And will I need an in-line oil check valve.

Thanks

Garry

[noel shelleyParticipant @noelshelley55608]

The viscosity of steam oil is thick, a 1/16″ pipe may prove restrictive. Just a thought. Noel.

[MichaelRParticipant @michaelr]

I would think a 1/16″ bore pipe would feed to the valves OK, and yes you will need a check valve in your 1/8″ pipe between pump and the Tee piece to stop any blow back that might occur.
MichaelR

[Speedy Builder5Participant @speedybuilder5]

My lubricator has a check valve built into the oil pump cylinder. The delivery from the pump feeds two cylinders with piston valves however the oil is fed into the steam delivery pipes adjacent to the piston valves. Seems to work OK for me.

Bob

[salatipaParticipant @salatipa]

Yes, your configuration with a 1/8″ hose to a Tee and then two 1/16″ outlets can work, as long as the flow remains balanced. Personally, I would add an in-line check valve to avoid oil returns and guarantee constant lubrication. It is a simple but effective security.

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