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Joined: Jan 2000
Posts: 2,074
J
'Bolter
'Bolter
J Offline
Joined: Jan 2000
Posts: 2,074
Wanting to install a shut off valve in the heater hose for the summer, believe the hose to the water pump is correct location But also after having a couple old heater cores give up the ghost at the worst possible time, I'm thinking of putting a shut off valve in each heater hose! Good idea or not?


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed
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T
Ex Hall Monitor
Ex Hall Monitor
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The push side. <CLICK>


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J
'Bolter
'Bolter
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Ok Tiny thanks glad I asked. But still may go with two valves.


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed
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J
Shop Shark
Shop Shark
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Joined: Jan 2013
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Take the hose that goes from the water pump to the heater off at the heater. Take the hose that goes from the heater off at the block.
Put the waterpump hose on to the block fitting and the block hose onto the other heater connection.
Reverse the procedure in the fall.

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J
'Bolter
'Bolter
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K Jim I've done that in the past, thinking the valve will be less hassle?


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed
Joined: Dec 2015
Posts: 2,063
Big Bolt Forum Moderator
Big Bolt Forum Moderator
Joined: Dec 2015
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I used a single valve on mine, it has 4 hose fittings on it so, it will bypass your heater core. It is vacuum operated so it is easy to turn on or off. We get plenty warm in the summer during the day but sometimes it is a bit chilly in the morning or evening an a bit of heat is nice. Or if it rains and I want the heat on for the defroster.

Napa 660-1294


Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
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1958 Chevy 6400 flatbed W/dump
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Sufficient unto the day is the evil thereof
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Q
'Bolter
'Bolter
Q Offline
Joined: Mar 2013
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I use a single shutoff as well. No need for dual vlavles if the first one is installed on the pressure side. Coolant won't reverse flow . All vehicles that have a shutoff only use one. I have a small leak in my heater core and it doesn't leak with the valve closed. If that helps..


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