needle valve

Tony Conner

The only applications where I've seen needle valves used, are ones in which there is a need for REALLY precise control of a flow. They're FAR more precise than globe valves. It's like the difference between a tape measure and a machinists micrometer or caliper. I'm having trouble imagining a heating application where this precision would be required, and if nothing else, I think the pressure drops across them will be brutal.

Z Weintraub

needle valve

I have a blue print where the architect is specing needle valves at each branch off the riser (for baseboard)

Steamhead

Balancers?

He probably did that so the flow to each baseboard could be fine-tuned.

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