|As important as Equaply® systems to high flow rates, there is another factor which is at least as important. Adequate hose and fittingsfromthe Tank are critical to high speed application. Almost every farmer who applies anhydrous has been slowed by cold weather in late Fall or early Spring. Equaply® systems compensate for the reduction in tank pressure with our Hypro booster pump. But we find that there are limits to the amount of flow even with the pump. The pump does not suck anhydrous out of the tank. Rather, it accepts flow from the tank and increases pressure.
While the pump can overcome restrictions downstream from the pump, it can't do anything about restrictions before the pump. For Equaply® systems to function correctly, we now have requirements for hose and fittings. Restrictions to flow are listed below, starting at the tank:
1- The dip tube provides the path for anhydrous to leave the tank by a top opening. It is about the only item that can't be economically updated. Fortunately, the dip tube is seldom a problem.
2- The shutoff valve at the top of the tank attaches to the feed hose. Most are 1" valves, left over from 1960's technology. These valves are the prime cause of flow restriction. Continental NH3 has hybrid 1.5" valves for the older 1000 gallon tanks with 1.25" bungs and 1.5" valves for newer tanks with 1.5" bungs. It is essential that anhydrous systems have 1.5" tank valves such as Continental NH3's A-1406-G(1.25" inlet) and A-1507-GA) 1.5" inlet.
3- The Acme coupler—one half is attached to the shutoff valve and the other half is attached to the globe valve at the inlet of the feed hose. The 1.13/4" coupler is 1960's technology for 1" hoses. It is essential that anhydrous systems have 2.25" acme couplers such as Continental NH3's A-527-G and A-533-E.
4- A globe valve is at the inlet of the feed hose. New high flow 1.25" globe valves which are far less restrictive. It is essential that anhydrous systems have 1.5" globe valves such as Continental NH3's A-2550H.
5- Most feed hoses are 1.25" I.D., the bare minimum. Don't even consider using 1" hoses from the tank. 1.5" nylon reinforced hose is required as the new standard for high speed application systems.
6- The breakaway coupling is located where the feed hose attaches to the toolbar. New design 1.25" high flow breakaways are far less restrictive. Here, also, 1.25" high flow breakaways from Continental aNH3 or Squib-Taylor are an absolute requirement. Continental now offers a 1.5" breakaway, A-HFC-112-G, for mission critical systems with enormous flows (60 to 80 gpm).
7- All piping between the breakaway and the pump must be a minimum of 1.5". Hoses must be a minimum of 1.5".
Obviously, two tank lines can flow more than one. Properly hooked up, two lines can flow twice as much as one line, no surprise. With two tanks, hoses and fittings from the tanks as per above, The Equaply® System has applied as much as 80 gpm. In the Fall, just before freezing, with 1.25 hoses and 2.25" acmes and decent tank valves, the System applied 60 gpm. From this, we can conclude that one 1.5" line is good for at least 40 gpm. A 1.25" line with up to date tank valve and acme can provide 30 gpm. From our customers who have 1.25" lines and small acmes and tank valves, we find that they can apply up to 20 gpm per line.
Because we don't want play the blame game when flow is inadequate, we insist that our customers provide adequate hose and fittings as a condition of buying our system. We would much prefer that a customer walk away than be dissatisfied with our product.