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  1. snapper3

    Brass/Copper Conversion Coating

    I work for a company that provides brass and copper machined and assembled end products. For the past several years we have treated those products with a brite-dip and then chromate conversion coating called Luster-On 70. The Luster-On 70 was a powder that we could add to our small dip tank (70...
  2. snapper3

    LN2 pumping problems

    Thanks for all the great information! Based on your comments, our proposed solution is to try to wrap the vapor return line with some form of mild heating element. We'll power it with 110 VAC located nearby. We'll synchronize power to the heater to operation of the pump. We're looking in a...
  3. snapper3

    LN2 pumping problems

    Edit to above post: The water is sprayed on the VAPOR RETURN LINE, not the suction line. Sorry for the confusion. Any ideas?
  4. snapper3

    LN2 pumping problems

    Greetings Cryo Experts! I'm new here and was hoping to get some information about a problem we're having with our LN2 pumping system. First, here's some specs on our system: Pump - DPD series footmount recip by Pittsburgh Cryo, 4000psi max, not sure of GPM Tank - 1500 gal, 96" high, topped off...
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