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Looking for good Caleffi hydronics distributor for radiator valve

rklopp Member Posts: 3
I am trying to get my hands on a Caleffi 4501 radiator valve (plus an extension tube and compression fittings) in Northern California. My local supplier is not getting anywhere. Any ideas on who I should try?



  • Caleffi

    Have you tried Power Boiler Sales in Richmond?


    or email Bruce Tompkins in sales at [email protected]
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • meplumber
    meplumber Member Posts: 678
    Do you have Johnstone supply?

    Here in Maine, Johnstone Supply carries Caleffi.
  • hot_rod
    hot_rod Member Posts: 21,802
    where did you get that #

    maybe from our international catalog? We do not currently offer that valve here in the US. The products we offer for the US market are listed on the www.caleffi.us website.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • rklopp
    rklopp Member Posts: 3
    International Catalog

    Yes, I must have gotten that number from the International catalog. This Caleffi is the only valve I can find that will let me regulate the bypass 0-100% and let me convert a Runtal towel warmer to a one-pipe setup. I am looking for the 450140 model, which is the 1/2” model, plus a model 453020 extension tube and two 437516 compression connectors for 1/2” copper tube (5/8” OD = 16 mm).

    I've looked at everything from Danfoss to Watts to B&G to Taco to Buderus to Honeywell to Apollo, and I cannot find a valve that will do what the Caleffi one will do.
  • Europe

    Do you have any contacts in Europe?  If so, order it from them.

    Hot Rod: If it's a 1/2" valve, it should be no problem to get it there.  Correct?
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • CMadatMe
    CMadatMe Member Posts: 3,086
    edited July 2011
    Single Entry Valve

    Be more then happy to UPS you one if this does it for you..


    See page 3 below:

    "The bitter taste of a poor installation remains much longer than the sweet taste of the lowest price."
  • rklopp
    rklopp Member Posts: 3
    Now we're talkin'


    That looks like it might be the ticket! I wonder why I could not find it before. Let me check my pipe center distance and I'll get back to you.

    Thanks very much,

This discussion has been closed.