Question about Rheem Water Heater Drain Valve

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Water is leaking from the plastic drain valve -- the valve is off but water is still dripping. Can the drain valve be replaced for my 81V30D tank?

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Easiest to put hose cap over end of drain.
Open following link for resources and illustrations:
http://waterheatertimer.org/How-to-replace-water-heater-drain-valve.html

Posted on Aug 13, 2011

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Drain valve plastic slow leak 81V-80D


If the drip is coming out of drain valve: Put a hose cap over end of drain valve.
If water is seeping out of cracked drain vale, then replace it.
If the leak is seeping around previously sealed threads, then tank may be rusted beyond repair.
http://waterheatertimer.org/How-to-replace-water-heater-drain-valve.html
http://waterheatertimer.org/Leaking-water-heater.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Oct 06, 2012 | RHEEM 30 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Drain valve leaking. Gor replacement part. Cannot get old valve off . Does the whole valve come off , unscrew or pull off? serial number is RN1296A 18392. Will the new part fit the same New...


If valve is dripping, buy garden hose cap and screw onto valve.
Whole valve unscrews counterclockwise.
If valve is plastic, expect it to break off.
If valve is brass, use cheater bar on your pipe wrench.
I don't know that serial number or part number, but drain valves are standard 3/4" pipe thread.
http://waterheatertimer.org/How-to-replace-water-heater-drain-valve.html

Drain valve can be rusted in place and impossible to remove without draining tank and putting water heater on it's side.
Install new water heater so drain valve is accessible, and buy new water heater with brass valve instead of plastic.

Jun 15, 2011 | Rheem Water Heaters

1 Answer

I just noticed that my hot water heater that is 6 years old is dripping very slowly from the bottom faucet, how can i stop this leak. thank you.


If you mean the drain valve, then buy garden hose cap at home center.
Cap will have rubber washer that seals tank.
If drain valve is plastic, the cap may not thread on without sanding down end of plastic drain valve.
Otherwise replace drain valve, which is simple if drain valve is brass, but can be difficult if drain valve is plastic.
Turn off power to water heater: Electric: turn off circuit breaker. Gas: turn knob to pilot.
Turn off water, open bathtub spigot on Hot side, drain water heater, remove drain valve with wrench.
If plastic drain valve breaks while being removed, then 'gently' break out broken part using hammer and big screwdriver.
Buy new drain valve at box store in water heater department.
Put teflon tape on new drain valve threads.
http://waterheatertimer.org/Water-heater-is-leaking.html
http://waterheatertimer.org/Water-heater-will-not-drain.html
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Mar 06, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

We have a brand new rheem 40 gal elec water heater, after installation we have water leaking from the base of the relief valve, pooling up in the plastic fitting and making it way over the side all over...


Water heater should be set in a drip pan.
Otherwise, put 1 gallon bucket under TP release pipe to catch water.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#drip-pan

When you say relief valve, I assum you are talking about brass valve located on top of tank or near top of tank. This is TP valve and a pipe connects to this valve and runs down to within 6" of bottom of tank. TP valve has a small lever on it.
If you are talking about tank drain valve located at bottom of tank, then add a comment.
Following information is for TP valve.

Dripping TP valve can be caused by 3 different thing:

1) Obstruction inside TP valve. Open TP valve for a moment to flush away particles and slowly lower lever back down. See if water stops dripping, if not, then replace TP valve

2) Defective TP valve: replace TP valve. Turn off electricity to water heater. Let heater cool for several hours so you do not get scalded. Close shut off valve located above tank on cold side. Open tub spout to relieve pressure, open tank drain or open TP valve and empty water below TP valve level. If TP is located on top of tank, not much water has to be drained. Tank is under press when hot, so be careful. Put teflon tape on new valve and install with big pipe wrench by turning clockwise until TP valve is very tight.

3) Overheating tank. TP valve is temperature-pressure valve. If tank water is over 150 degrees, the TP valve starts drizzling hot water to relieve tank pressure.
Lower tank pressure two different ways:
a) turn down thermostat
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html
b) install expansion tank on incoming cold water line
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#expansion-tank

Dec 19, 2010 | Rheem Water Heater Pressure Relief Valve

1 Answer

Turned off the hot water to fix a leaking tap. now the tap has no hot or cold water and the hot water tank valve is leaking?


It sounds like two problems.
Problem 1) Clog inside faucet or clog inside pipes at faucet
Remove supply tubes leading to faucet and see if problem is inside pipes or inside faucet.
My bet is clog inside faucet.

If you have galvanized pipe that meets copper pipe, this can be trouble spot.
Article on clogged water pipes at Inspectapedia:
http://www.inspectapedia.com/water/Water_Pipe_Clog_Repair_Guide.htm

Article on clogged pipes:
http://www.waterheaterrescue.com/pages/WHRpages/English/Troubleshooting/Tanklets/backflushing.html

Problem 2) Water heater leak ... you say tank valve is leaking? Is that cold-water shut-off valve? Or tank drain valve? Or TP valve?

If cold water shut-off is leaking, then replace shut off.

If tank drain valve is leaking, then check if plastic valve is cracked. If drain valve is cracked, then replace with a brass valve from Home Depot. If plastic valve breaks off, then use hammer and screwdriver to gently chip out the broken plastic valve. New valve threads need teflon tape to seal pipe. If valve is just dripping, then put garden-hose cap over end of valve and screw down tight.

If TP valve is leaking, then replace with same temperature and pressure rating.
New TP valve threads need teflon tape to seal pipe.

Problem 3) If pressure is low all over house:
Buy pressure gauge at hardware store that screws onto hose connection.

Test pressure on outdoor spigot.
Open faucet and check if pressure drops. This says if problem is inside pipes that enter house.

Test pressure on water heater drain valve.
This says if pressure problem is before -or- after water heater.

If problem is before the water heater, then shut-off valve located on cold water line is suspect.
If problem is after water heater, it could be in hot water outflow pipe on top of water heater, or a nearby elbow.

Remove hot water line leading from water heater and check pressure. This says if problem is where hot water leaves tank.
Read articles above about clogs inside water lines.


Nov 16, 2010 | Rheem Water Heater Pressure Relief Valve

1 Answer

A SMALL DRIP CONTINUES TO COMe out of the drain valve. I drained the tank and refilled it but it continues to drip. It appears there is a white plastic drain knob which is where I attach my hose to drain...


Hello CHUCK The drain can be replaced with a LONG stem brass hose bib.The plastic is a piece of s*#$.They also sell brass drain caps for a easy way out.Just screw it on.

Aug 05, 2010 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

I own a Rheem Power Vent with powerglo ignition system - model # 21 vp50-1 50 gal, serial # rn 089d06577 ---i've noticed water on the floor around the water heater, i thought maybe the tank was rusting out...


The plastic drain valve is a possibility. Also the Temperature/pressure relief valve is typically piped close to the floor if there is a drain near by. People tend to ignore water heaters. The TPR valve really should be excersized annually. If it won't re-seat, then it should be replaced. Second the tank should be partially drained annually to drain any solids that have accumulated in the bottom over time. If you don't do this frequently the drain valve can become almost impossible to operate.

Aug 05, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

Pop off valve dripping Rheem 50 gal electric valve at bottom


If you are reffering to the drain valve at the bottom of the hot water tank. It may be leaking due to the O ring being cracked or worn out. You can either drain the tank and replace the valve or you can buy a hosebib brass cap and thread it on the existing valve. There is no cause for alarm when doing this as this valve is just to drain the tank when replacing your hot water heater

Feb 23, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Dripping Drain valve on rheem water heater


If your water heater is 10 years old or more, it's much better to replace the entire thing before you start having additional problems with it. You MAY be able to drain your water heater and replace the valve with something more reliable, but, as I've said... if your water heater is old, this is just the 1st thing to go wrong. More will follow.

Aug 16, 2009 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Dripping from drain spout


If you are refering to the "Dripping coming from the preasure tempature valve,Then just turn off the valve where the water goes into the heater and open the P/T valve with a bucket below it draining only emought water to get below the level where it reaches.     Normally the drain valves are plastic with a Male hosebib attached.  Attach a  garden hose to the rain and run it out to a point lower that the vaslve in order for gravity to drain the tank.The valve opens counter clock wise. If the valve is stuck or does not drain,and you have a foor drain handy,remove the whole valve and replace it with a boiler drain valve.  If The tank is located below the drain level then you will have to either pump or carry the drain water to the higher level.     Replace the P/T valve  and reinstall the associated associated piping. I would use tefelon tape on the P/T pipe theads.    You may have to open a hot water faucet in order for the air to replace the water in the tank ,in order to drain. 

Jan 31, 2009 | Rheem 40 Gallon FVR NATGAS Low WATER...

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