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Recent content by KenRad

  1. KenRad

    Identifying a Hose Bibb Manufacturer

    I have a hose bibb with a stripped out packing nut. Pipe connection is PEX. To replace the whole valve, I would need to open up the wall. But if I can find a new valve, I can just replace the stem/disc assembly. Can anyone tell me what manufacturer uses this symbol?
  2. KenRad

    Humidifier Calculation

    As GMcD pointed out, your air is leaving the coil at a saturated condition. If this conditioned air enters a room where it warms up to 22°C, the relative humidity will become about 60%. Are you trying to achieve a higher %RH than that? Or should you be looking at leaving coil conditions...
  3. KenRad

    Electrical Receptacle for Oily Environment

    On a recent visit of an OSHA inspector to one of our machine shops, a comment was made that our standard 120V receptacles are not suitable for an oily environment. The shop has a central mist collector system that does a decent job of keeping mist from escaping the machines, but for a variety...
  4. KenRad

    Cleanouts in an old storm drain pipe

    I'm looking for either an old plumbing engineer, or someone who is familiar with underground piping practices from the early 1970's. Our building has a first floor office that was built in 1971. Under the 4" slab, there is an underground 12" RCCP storm drain pipe running the length of the...
  5. KenRad

    Operation of Carbon Adsorption Equipment for Ammonia Exhaust

    bimr, Thanks; that was the answer I was hoping for. ---KenRad
  6. KenRad

    Operation of Carbon Adsorption Equipment for Ammonia Exhaust

    I have an exhaust treatment system where I'm using phosphoric acid impregnated carbon to adsorb ammonia in an air stream. The system serves some test equipment, which only runs a few hours per day. My preference for operation of this system would be to leave the exahust fan running all of the...
  7. KenRad

    Drying a Piping System Following a Hydro

    I have a tubing network made up of various sizes of stainless steel Swagelok, to be used for a 5000 psig nitrogen (gas) system. The system owner is concerned about removing all water following a hydrostatic test. There are plenty of vent/drain points for removing most of the water. Beyond...
  8. KenRad

    Liquid Nitrogen Piping

    Thanks all for the help. The LN2 is from a large bulk storage vessel, and the line will be foam insulated. The chamber has refrigeration equipment, but it can't keep up with the rapid ramp times needed for a certain test, hence the liquid N2 boost. iainuts - Thanks; I hadn't even thought of...
  9. KenRad

    Liquid Nitrogen Piping

    I have no experience with cryogenic piping, but need to quickly design a 50' liquid N2 run that will feed an environmental chamber for low temperature product testing. The line will be valved off for weeks at a time when this low temperature test is not taking place. My question is this - what...
  10. KenRad

    Baseboard heater smell

    trainguy, When you said sickly sweet, the first thing I thought of is glycol, or antifreeze. Any chance of liquid leaking in from the garage? Electric baseboard heaters are cheap; I would rip it out and start with a new one. ---KenRad
  11. KenRad

    HVAC register placement

    jay156, What MintJulep said is optimal; heat delivered near the floor, and cooling at the ceiling. But you only have one system, so you need to ask yourself the following: 1. In my part of the world, what will the unit be doing more often; heating or cooling? 2. If heating dominates, do I...
  12. KenRad

    Chiller Manufacturers

    fiberstress, Trane has a CG series that is air-cooled in this range. The 60-ton has 4 scroll compressors, with two refrigerant circuits. I've used them for years in 24/7 production applications, and they've performed very well. ---KenRad
  13. KenRad

    Primary/secondary pumps

    ssn61, As long as this oversized primary pump is not causing problems at the chiller (assuming this is a chilled water system), like exceeding maximum evaporator flowrate, then it should be no problem at all to the operation of the system. The additional flowrate in the primary loop will not...
  14. KenRad

    Hazardous Location Sump Pump

    dicksewerrat - The entire room (where the sink is located) is Class 1 Division 1. Hence the need for a pump that is rated accordingly. hydrae - Don't need a solids pump, just a submersible. Still haven't found a small one for this service (Class 1 Div 1). ---KenRad
  15. KenRad

    Hazardous Location Sump Pump

    PEDARRIN2, I looked at those. While they would do the job, I was looking for something that wasn't 2' tall, and didn't need a 2' diameter sump. Hoping to find something that will fit under the sink. Since I haven't found anything on the Internet, I knew it was a longshot. ---KenRad
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