
For high pressure, though, I wouldn't trust that. You could boil the coupling and flare the end a bit if you needed to, otherwise, the glue might actually fill the gap. Only issue could be that the coupling is not a press fit inside the 1" slip adapter - there is a slight gap. With these part numbers you could build ten valves for about $3.50 each. White Delrin FDA grade ball 1" (PN: 9614K27) O-Ring (Silicone, FDA grade, since kids might drink the water): #317 (PN: 9396K288)ġ" Female Slip to 3/4" Male NPT Thread adapter (PN: 4880K434)ģ/4" Pipe Coupling (If you use a coupling, you don't even need to drill for the pin, since it has a stepped part in the center that is smaller than the ball) (PN: 4880K72) Here are the specs, and part numbers in case anyone wants to try it. I went to McMaster-Carr, and ordered some parts to demo so that I could build some inexpensive water toys for my toddler's preschool, and I think I've found a winner. I just tried this with parts found at various local hardware and DIY stores, and it didn't work so well. Air pressures up to 60PSI seemed to be fine for normal operation, while pressures above 60PSI occasionally caused the ball to lock into the O-Ring, and required substantial "back-pressure" to unlock it. In my testing, the valves work great with air and water. It can be used as an air pump, a vacuum pump, or a water pump that will pump up to 5 gallons per minute. I tried using 2 of these check valves to make a PVC water pump.

That seemed a little steep for a PVC build, so while looking for alternative options, I settled on this design, which is about the cheapest, while still being practical and useful, that I could imagine. My motivation in building these valves stemmed from a desire to build a PVC water pump, but the check valves were around $10.00 each. Because we used the slip adaptors, the ends of the connections are threaded, and allow the valves to be integrated into any system, and switched around at will. If there are no air bubbles, that means your valve is air (and water) tight. If there is any air escaping at all, you will see little bubbles coming from the valve.

The balloon should stay inflated even when you stop blowing. To test your valve, use it to blow up a balloon. Let the cement cure for about 2 hours before use. You will need a little gap for the ball so the valve can open and close. Note: Don't press so hard that the ball is trapped in the closed position. Glue the parts that were primed, and slide the tube into the adaptor until the nail holes dip just below the surface. I took both spark plugs out and connected my tester into one hole. Im not sure that im doing the compression test properly. I bought a used garden tractor a couple weeks ago. Insert the O-ring and plastic ball into the adaptor, and check for a good fit and good seal. Compression Test on 22hp B/S Intec V-Twin. Prime the inside walls of the adaptor, as well as the part of the tube that will slide into it. Prepare the slip adaptor for connecting 1.

Note: This valve can be built into any length of PVC pipe you choose. Trim the head off the nail so that both ends of the nail or paperclip are flush with the outside walls of the tube.

Find a strong piece of metal, like a thick paperclip or a nail to insert into the holes. Drill a hole at the mark that goes through both walls of the tubing. Start by taking a piece of 3/4" PVC tubing (minimum 1-1/2") and measure 5/8" from the bottom. These are made to be a little more durable. Our continual availability of high grade products in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market.For this valve, we'll use the harder plastic ball and an O-ring. We welcome new and previous customers from all walks of lifestyle to call us for upcoming business enterprise interactions and reach mutual accomplishment! The product will supply to all over the world, such as Europe, America, Australia,panama, Nairobi,Paraguay, Hamburg.We focus on providing service for our clients as a key element in strengthening our long-term relationships. We normally believe that one's character decides products' quality, the details decides products' high-quality ,while using the REALISTIC,EFFICIENT AND INNOVATIVE staff spirit for Cooling System Tester, Crankshaft Pulley Holder, Compression Leak Tester, Fuel Injector Seal Tool, Vivaro Injector Removal Tool. Cooling System Tester - Manufacturers, Suppliers, Factory from China
