This is especially crucial for cast iron valves. 2 answers Ken. Always make sure that it is on the highest point of the tank. Asked by marcos August 2, 2020. IOW, when the shut off valve is closed, the expansion tank can still absorb excess pressure created by heating water in the heater. Mount PRVs in a vertical position, which means upright and with the spindle vertical. Tank Selection Guide. I am installing one after the stop cock but wish to mount in the vertical position, the exact type of PRV I am installing is a Honeywell type - D04FS. Pressure relief valve installation Mounting. Also, unequal pressure on the bladder or diaphragm can lead to early failure of this particular mechanism. They make horizontal tanks specifically for that reason. I agree with Andrew. This also could have avoided if the contractor had dug a 6 inch spot out--the tank would have stood upright. I'm in a condo and the utility room is tight. The tank can be installed anywhere in the cold-water line between the house’s main valve and water heater, or on the hot-water line within 3 ft. to 5 ft. of the water heater. A: Suddenly no fitting need for it. An expansion tank should be installed in conjunction with a pressure-reducing valve in high-pressure situations. So in an upflow vertical furnace, the cold air is taken in from the bottom and the warm air is released from the top. August 2007. Inlet threads up, down or sideways, it doesn't matter. My neighbor asked if I would come over and help him finnish a pump installation. The water line enters house near floor before entering pressure tank. The tank’s size is an important consideration. Whether oriented uprightly, horizontally, or even upside down, the expansion tank will function properly without any adverse effects. Available with both internal and external bearing design. The mounting nipple on the gauge is oriented on the dial where 6 o'clock would be on a clock face. 2. 13. Vertical Tank Selection. A propane appliance is designed to use either propane gas (most appliances, your firelogs are almost certainly in this category) or liquid propane (only device I know of in this category is the burner for a hot air balloon). Best to install a 90 degree elbow and mount the valve vertical. Yes. However, there are risks to it. Bell mounted Casings can be installed horizontally or vertically. Paul Fredricks_3 Member Posts: 1,549. Brand New Member. Sioux Chief arresters can be installed vertically, horizontally, or any angle in between. This was never offered to me by the contractor. This will conflict with info that comes with any expansion tank you buy at a retail store. Jerry Peck These thermal expansion tanks can be mounted in any orientation and the tank will function correctly. A. How do I determine which is the right size to buy? Expansion tanks can be installed horizontally. ? The expansion tank can be installed at any angle. Horizontal or vertical flange mounted pump with laterally arranged flange connections. In fiberglass tanks the FL17 or H2PL50. You would have to completely redesign the core elements of any pre-existing vertical hot water tank. The underground tanks manufactured by Flexcon are designed for horizontal installation and are availabe lin three sizes up to WR140BGR. Most safety valves are designed, manufactured, and tested to be used vertically, meaning in the upright position with the spindle vertical. As always the manufacturer's instructions take precedence. The expansion tank is usually installed horizontally, though it is acceptable to install it vertically if it is necessary because of space limitations. Side installations are acceptable up to the WR140 and PC144 sizes. Or maybe just install the RD nearest to the main header to minimize the potential for condensation, although you may have issues with unrecoverable pressure loss across the tailpipe. As for the emergency pressure relief valve. It depends on the application and type of check valve, some you can, in fact most you can, but in some applications it is better not to. Expansion tanks can be installed in any direction. Can they be mounted horizontally?" There have been millions of Sioux Chief arresters installed worldwide over the past 15 years, and we have never had a problem due to worn-out o-rings regardless of their position of installation.