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1 KPA = 0.14503773773020923 PSI
1 kW = 3412.142 BTU/hr
100 scfh NG x 0.63 & x 2520 = 158,760 BTU’S of propane.
To help operators get maximum life from lubricated plug valves, the following tips are offered:
1. Plug adjustments should be snug tight enough to keep the plug from becoming unseated, but not to a degree requiring excessive force to operate the valve.
2. Lubrication should be periodic, systematic, and with the proper grade of lubricant.
3. If the valve system is filled, fresh supply of lubricant can easily be forced between the seating surfaces by giving the lubricant screw a few turns. Depletion of lubricant in the system will require the addition of several sticks before lubricant can be forced into the seat. In this instance, lubricant should be added until resistance is felt in turning the screw.
4. Turn the plug slightly when lubricating to assist in the distribution of lubricant and to determine if the adjustment is correct. If the valve is lubricated with the adjustment too loose, it can be corrected by alternately tightening the adjustment and turning the plug. This will work out excess lubricant and permit the plug to return to its proper position in the seat.
5. At the time of adding new lubricant, care should be taken to prevent any solid foreign material from entering into the lubricant space of the valve.
6. IMPORTANT: Always lubricate the valve in either the fully open or fully closed position.
At low pressure gas (ie 7”wc) it’s very important. Always size the regulator based on the outlet pipe size for less restriction.
Recommended maximum flow without adding more pressure drop on low pressure:
- 600 scfh on a ¾” line
- 1200 scfh on a 1” line
- 2500 scfh on a 1-1/4” line
- 7500 scfh on a 1-1/2” line
- 2” line will depend on the regulator selected
A lock up regulator is when a regulator has its delivery pressure set while gas is flowing and flow suddenly stopped, a small rise in delivery pressure (lock up) will happen before the regulator seat closes on the orifice fully. The lower the lock up the better the performance of the regulator.
All regulators have some delivery pressure drop with increased flow rate. The smaller the drop as flow is increased, the better the performance.
A pressure reducing valve.
1000 BTU/hr requires 1 Cubic foot per hr (1 CFH)
1MBH = 1000 BTU/hr = 1 CFH
If the owner of the meter is billing the user, the meter must be certified by Measurement Canada. This is not necessary if the owner is sub-metering.