What is the purpose of the built-in safety check valve? How does it work?
1798679
Mine don't have no safety check valve, you turn the knob puncture the can turn the knob open Freon comes out. Turn the knob back down or off the Freon stops. If you take the hose off this valve with the can open Freon will go everywhere, and freeze your hand. However I accidently got the hoses crossed once, and tried to fill on the high side. Nothing happened, so maybe it does have one to stop Freon from coming back into the can I don't know.
1798680
It allows you to use a portion of the can and save what you don't use. The valve allows you to disconnect the hose without discharging the what's left in the can. With 134 getting more and more expensive it saves you money.
1798681
Think its a one way ball check so that freon can leave the can and prevents back pressure from entering the can
1917519
The valve is designed to either have both open or one input can be partially or fully closed (while the other input stays fully open)
696734
I used this valve in a shower, where you typically don't control flow volume, only temperature. Not sure if it has other intended uses.
1351262
We purchased one a while ago because my wife wanted to be able to control the volume of the flow without affecting the water temperature. It works great for that. In the fully open position it doesn't seem to restrict the flow.Hope this helps. Good quality valve.
812822
I don't know what you mean about the check valve...what you see in the picture is what you get...It works perfect....
1389519
Hi larry here. I just received mine and there is a valve included in a plastic bag , no explanation but I think it screw into the unit for that purpose?? That's all I have for you
831602
No, that is not the correct operation of the valve. The valve is normally closed when there is no power input to the valve and it opens when power is supplied to the valve.
642414
The valve is used to ensure that the solar panels are bypassed when the pool water is warmer than that from the panels, or if the pool has reached the desired temperature. For a new installation you need the GL-235 plus two temperature sensors, a rotary valve and an actuator. I purchased the GL-235 alone, as my controller had been damaged by a lightning strike. The fuses were OK, but the internal circuit was damaged. I understand that this is quite common with the GL-235 and I recommend using a surge protector in the power circuit.
2006089
It's a three way valve!!It's not a check valve, but I guess you could use it with a secondary discharge pipe so you can manually switch the location of the discharge.
1735013
Kathy, Very good question. I don't see what the purpose of the float is - it does not connect to anything, not a level gauge, not a shut-off switch, nothing. The best I could figure was using the one screw to attach the white part to the one pre-drilled screw hole.
2049129
I'm not a plumber, but I would suspect either the placement of the check valve or the valve itself. The valve should be screwed into the pump housing - not somewhere up the line. If that's okay, there might be something keeping the valve from closing properly - dirt or a faulty valve. Does the gurgling stop right away? Is water backflowing after the pump turns off?
290437
There's no flow restrictor or check valve it's simply open and has a small hole I suppose for extra air venting during pouring.
2097492
Probably...its a lead substitute, but only a lot of time will tell if valves are better protected. As good as any. Better then nothing.
846574
This is not going to help but, I did not want to just say I don't know. I do not remember how to program anything about this unit other than the fact that I could never get it to work consistently. I am a contractor and purchased the valve for a customer. I ended up running a "hard wire" with which I could use a standard, low voltage valve. Good luck!
616661
It has a check valve so that when the hose is disconnected, any water pressure in the inside line will not be released through the valve. This allows me to tee the external water source with the onboard pressure pump water line to the sink faucet in my camper. The fitting does not qualify as a backflow preventer for the water supply line since it is not equipped with an anti-siphon valve like those which should be either inherently built in to the hose bib or added on as an accessory before attaching the hose to the water source. Hope this helps.
1717872
I'm not an expert, but I understood this was used primarily as a one-way "check valve" to stop the signal from returning back down the cable to neighbors, i.e. POE as Point of Entry to one's house.
1586451
Not sure if I understand your question. Its designed as a waste valve for the grey or black waste. It is not a pressure valve.