The same size as the pipe it is hooked up to in the well.
The foot valve in a well should be the same size as the down pipe, usually 1 inch, but could be as small as 3/4 or as large as 1 1/2 . Foot valves are made in all those sizes.
A foot valve is something that you eat with your foot
1200 foot propane furnace what size do i need
I wonder why you would need that info when you just buy a new pvc valve and replace it.
8 indian size
Women's US10 fits a 26cm foot length - average foot width for that size is approx 9.5cm.
To determine the correct size presta valve for your bike, measure the length of the valve from the base to the tip. Common sizes are 40mm, 60mm, and 80mm. Choose a valve length that is at least 10mm longer than the depth of your rim.
A foot valve is not required in reciprocating pumps because these pumps can create suction and effectively draw fluid into the pump chamber during their intake stroke. Unlike centrifugal pumps, which rely on continuous flow and need a foot valve to maintain prime, reciprocating pumps can handle intermittent flow and are designed to operate with a positive pressure during the suction phase. Additionally, the check valves within the pump ensure that fluid flows in the desired direction and prevents backflow, eliminating the need for an external foot valve.
Depends what size your pipe is
To measure your shoe size, you need to work out how long your foot is by either inches or centimeters. If you have figured it out, go to Zappos, an online help guide to find your foot size.
You need one that match your tire size and your type of valve. The tire size is written on the tire sidewall. Doesn't have to be a perfect match in width, but the right diameter is fairly important. If the valve is the same type as on a car tire, then look for a tube with a "Schrader" valve. If it's a narrow thing, it's probably a "presta" valve.
Are you sure you don't mean 'foot valve' - this is the valve at the bottom of a well suction pipe when you use a jetpump. I've never heard of 'foot trap'.