Amtrol 420, WX-401 manual For Example, Let’s Compare, Requires Air Control, On the Other Hand

Utilizing the Maximum Capacity of Full Acceptance Well-X-Trol®s Series 400, 420, 440 and 450

When used with conventional pressure ranges, these Well-X-Trolmodels use only a fraction of their maximum capacity.

For Example:

A WX-423 with a total volume of (275) gallons will accept the following:

at 30/50 – (85) gallons or 30.9% at 40/60 – (74) gallons or 26.7%

By using the maximum acceptance of series 420 and 450 Well-X-Trol®, you can replace very large, cumbersome galvanized tanks.

Let’s Compare:

A 900 gallon galvanized tank is (48″) in diameter; (168″) long, and weighs approximately (10,000) pounds when filled with water.

Aside from initial cost, the cost of rigging and handling a tank of that size; (providing adequate support and the cost of space required) significantly adds to the overall installation cost.

Requires Air Control

Since at the higher pressures, the galvanized tank will waterlog at an accelerated rate, some provision must be made to maintain the required air cushion. This means the cost of an air compressor or other means of recharging must be added to the installation.

On the Other Hand

Step One – Determine the Best Operating Pressure Range – Pump Cut-In (P2) to Pump Cut-Out (P3):

GROUND LEVEL

STATIC

WATER

LEVEL

PUMPING LEVEL

OR LIFT

240 FT.	PUMP
	DEPTH
(In example)

WELL

DEPTH

The first thing we must do in sizing the bladder is to determine the best pressure range that will achieve maximum acceptance.

. We can be accurate by letting the pump tell us at which maximum range it will operate best.

If we look at the pump curve for the pump which is to be installed…we can easily determine the pump cut-in pressure (P2) and pump cut-out pressure (P3) that will give us the widest range.

The WX-423 has a total volume of only (275) gallons; is only (36″) in diameter; and (84″) high. When filled with water (to the 65% maximum acceptance) it only weighs (1489) pounds.

It can be easily handled by two men, requires no support structures and occupies a fraction of the space of the galvanized tank. Since the Well-X- Trol®’s air cushion is sealed-in, there is no need for external air compressors or control devices.

If we can use the maximum acceptance of the 420 and 450 Series Well-X-Trol®, we can service much larger jobs…with large pumps, without paying the penalty of higher installation and maintenance costs.

TOTAL HEAD IN FEET

700

600

500

400

300

200

100

0

EFF.

20 40 60 80 CAPACITY IN GPM

80
60	%
40	EFFICIENCY
20

100 120 140

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