I Have A Valley Shower Faucet Live In Mobile Home No Hot Water Pressure In Tub/shower, All Three Sinks Have Great Pressure. So Far I Have Drained A Gallon Of Water From Hot Water Tank. Shut Off Water Main Took Out Cartridge And Seats And Springs Turned Main Back On For 5 Min Looked At Faucet Still No Hot Water Pressure Even With Nothing In It. Held Finger Over Cold Water Hole To Flush Hot. Shut Off Main Put In Brand New Springs And Seats And A Brand New Cartridge Turned Main Back On.

Still No Hot Water Pressure In Shower Don't Know What Else To Do???

speedball1

Renove the knob and chrome face plate and Look up where the hot water connects to the valve,(see image). This is a screwdriver shut off or integral stop. It's a shut off so you can service the valve. Shut the water off at the house shut off or the hot water heater and remove the stem and washer assembly from the screw driver stop. Feel around the seat for a blockage. Now turn the hot water back on to flush out the supply and screwdriver stop. do you have a full stream now? Good luck, Tom

baybee

I do not have shut off screws looked. but i did do everything else you stated and no help
thanks

speedball1

OK! That puts the problem in the hot water supply. If I were there I would cut the hot water supply loose from the shower valve and disconnect the hot water supply from the lavatory faucet. I would then take a air compressor or air bottle and attach it to the lavatory supply and attempt to blow the obstruction out of the system. good luck, Tom

baybee

Gonna try that tomorrow cousin coming with an air compressor but we did not know how to go about using it to blow line, thanks will let you know how it works out.

speedball1

Your biggest hassle will be adapting the compressor to the lavatory supply. If you run into a problem click on back for a little help;. Cheers, Tom

baybee

Speedball one question before i attempt this tomorrow. If the hot water pressure is perfect in the lav sink -hot water supply than how will that blow blockage all the way to the hot water supply in tub.

And any suggestions on what PSI to use?

thanks much

speedball1

I'm closing the entire system off, ( shut the cold water off at the water heater and close all hot water faucets.)and pressuring up the entire hot water system through the lavatory supply with the terminal outlet being the tub/shower supply that you have opened up. This will force water back through the tub valve supply. It will be a weak stream at first but when the stream becomes strong chances are you blew the blockage out. I would start a 100PSI and go up. this might kick off the T&P valve on the water heater but it will only be for a short while. Let me know how you made out. Good luck, Tom

baybee

Thanks so so much i sure will let you know if it works. Keeping my fingers crossed

baybee

Hi was thinking your statement

This will force water back through the tub valve supply. It will be a weak stream at first but when the stream becomes strong chances are you blew the blockage out

How will water flow in a stream than strong through hot water line when hot water is shut off at water heater where does water come from?
thank you