Recent content by heaterguy

I registered and downloaded the synopsis. It was very easy and only took a few hours for my registration to clear. There is a very helpful chart showing which states require NBR. Michigan is not one of them. North Carolina is.

Which states require national board registration for ASME pressure vessels? I believe North Carolina does. Does Michigan also require it?

If a medium voltage is rated 4160 in the US, what is the equivalent voltage in France?

I apologize if this topic has been discussed, but the search function is down and Google didn't pull up anything on this topic. A paint spec says for carbon steel, "When using inorganic Zinc under insulation, do not apply on piping or vessels operating between 50F and 250F as the zinc reverses...

Hi davsy, ISA classifies pressure control valves in SP20 form 51. Relief valves are SP20 form 53. HG

Per the Instrument Society of America: Safety Valve (PSV): An automatic pressure relieving device actuated by the static pressure upstream of the valve and characterized by full opening pop action. It is used for gas or vapor service. Relief Valve (PRV): An automatic pressure relieving device...

So, to summarize: PRV for liquid service PSV for gas service PSRV for liquid and gas service

Please clarify when to use a PRV, a PSV and a PSRV. Is the difference application specific or code specific? Please identify (PRV, PSV and PSRV) on the following ASME pressure vessels: Thermal relief valve on liquid containment: Thermal relief valve on gas containment: Fire relief valve on gas...

When does year built apply? The year it was designed or the year it was hydrotested? Or are we allowed to decide? TYIA, heaterguy

Would you mind sharing with me the yearly quantities produced and ballpark prices of industrial gas turbines from the likes of GE, Solar, Siemens, Pratt&Whitney, etc.

4-12ma controls the coolling valve with 4ma full open 12-20ma controls heater with 20ma full on I would like to have one 4-20 ma controller setpoint input and two 4-20 ma outputs, with one of the 4-20 ma outputs inverted compared to the other.

Can someone recommend a split range controller? We like to use recognized brand names in our panels.

Comet is correct! So why does bleach remove the stain...on a chemical level?

One of the above cleaned it in seconds. Which one and why?

The white inside surface of my coffee mug had tea stains. Which cleaner removed the stains easily and why? 1. 409 2. Comet 3. Windex