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Radiator Pressure Relief Valves

Specs
Sold in Quantity:
Each
Finish:
Natural
Material Type:
Brass
Thread Pitch:
1/4" NPT
Overall Length:
1.62
Inside Diameter:
.19
Thread Length:
.45
Notes
Threads into Speedway Aluminum T-Bucket radiator to limit pressure to 15 psi. Required for PN# 91015600
Radiator Pressure Relief Valves

Click image to enlarge

Details

Reviews (7)

Q & A (8)

What's in the Box

Info

This valve is used with Speedways aluminum T-bucket radiator (91015600). It threads into a 1/4" NPT hole in the top radiator tank and it limits the pressure in the radiator to 15 psi.

The aluminum T-bucket radiator does not use a conventional "pressure" radiator cap, rather it uses the decorative "T" caps to seal the neck at the top of the radiator.

The arrow on the valve indicates the flow from the radiator.

Item Details

Required for 91015600

Customer Reviews

Rated 3.9 out of 5 by 7 reviewers.
RATING BREAKDOWN
7 reviews
5 Stars
2
4 Stars
4
3 Stars
0
2 Stars
0
1 Star
1
RECOMMEND THIS PRODUCT:

dwleo
Verified Purchaser
Verified Reviewer
Vancouver BC

As always - Great Buying Experience

October 12, 2015
Just now installing on my 23 T-Bucket and it looks great!
Pros:
  • Perfect Fit
Yes, I recommend this product.
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willb
Bozeman, MT, USA

quality construction

March 09, 2015
Well built pressure relief valve. Installed in 23t bucket. Only thing that could have been a bit clearer would have been to indicate which way it is installed. Figured it out but only by trial and error. Works great though.
Cons:
  • no indication on which way to install
Yes, I recommend this product.
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baddassdeuce
Verified Purchaser
colorado Springs, CO 80917, USA

it works a designed but it needs to look

February 03, 2015
Needs to be a little more dressed up for what it is intended to be used on just a ugly brass fitting on a polished radiator
Pros:
  • it workd
Cons:
  • its ugly
Yes, I recommend this product.
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jab64
Ingram, TX, USA

pressure relief valve

November 06, 2014
does its job like it was designed to do mounts easy and like that it is out of the way
Pros:
  • works
Cons:
  • None
Yes, I recommend this product.
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JerryHughes

not good product for tbucket radiators

May 04, 2013
this is a good product maybe on another application, it will not return water to the radiator on tbucket from overflow tank.
No, I would not recommend this product.
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Merchant Response:

This item was purchased Jan 2011 and therefore, is out of date for any return/warranty options. It is an overflow pressure valve for a radiator application and will function as such. Please note that if the radiator cooling system exceeds the 15 psi pressure, this unit is designed to relieve the pressure by allowing the coolant pressure to overflow into an overflow tank or onto the ground when an overflow tank is not utilized. These comments were forwarded to our quality control team to assess the quality of these valves.
no nickname
Verified Purchaser
Sunnyvale, CA.

radiator relief valve

September 19, 2012
this is my first time I'am using this relief valve on my tribute t. I call speedway motors to find out which way the valve fit into the radiator.the valve has a 15 psi pressor.
Pros:
  • Versatile
  • Lightweight
  • Easy To Use
Yes, I recommend this product.
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Lloyd
Mt. Nebo, WV

I used this item on a pressure tank

May 10, 2010
This is the only Company that carried the pressure valve . I looked everywhere ! I needed a 20lb. pressure valve , but this is working . I am using it on a diesel engine , that when under load gets a little hotter than a gas engine . I know it will work great on a gas engine .
Pros:
  • It fit my pressure tank
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

8 questions : 10 answers

1 answers

What size straight fitting do I need to route coolant from your model T radiator?

Fred
Houston, TX
October 19, 2011

What size straight fitting do I need to route coolant from your model T radiator?

Answers

October 20, 2011
John
Part # 91015805 The pressure relief valve is male ¼” NPT on each end. One end will screw into the female port on the lower portion of the upper radiator tank. To hook a hose to the opposite end you may be able to find a female ¼” NPT to a barbed hose fitting at your local hardware store. Not a common part and if unable to locate we offer coupler number 6176145 and a barbed fitting number 91611046 for ¼” hose or 91611050 for 3/8” hose.
3 answers

is there a spot to install this valve, if so where is it? or do i have to drill and tap a spot?

rudy watt
miami , Fl
September 03, 2011

is there a spot to install this valve, if so where is it? or do i have to drill and tap a spot?

Answers

July 02, 2015
Eric
Expert
THIS VALVE IS USED WITH SPEEDWAY'S ALUMINUM T-BUCKET RADIATOR. IT THREADS INTO A 1/4 NPT HOLE IN THE TOP RADIATOR TANK AND IT LIMITS THE PRESSURE IN THE RAD. TO 15 PSI. THE ALUMINUM T-BUCKET RADIATOR DOES NOT USE A CONVENTIONAL "PRESSURE" RADIATOR CAP, RATHER IT USES THE DECORATIVE "T" CAPS TO SEAL THE NECK AT THE TOP OF THE RADIATOR. PLEASE SUGGEST GASKETS # 911 12222 AS THEY ARE VERY HELPFUL FOR SEALING THE DECORATIVE "T" CAPS.
September 06, 2011
Jason
THIS VALVE IS USED WITH SPEEDWAY'S ALUMINUM T-BUCKET RADIATOR. IT THREADS INTO A 1/4 NPT HOLE IN THE TOP RADIATOR TANK AND IT LIMITS THE PRESSURE IN THE RAD. TO 15 PSI. THE ALUMINUM T-BUCKET RADIATOR DOES NOT USE A CONVENTIONAL "PRESSURE" RADIATOR CAP, RATHER IT USES THE DECORATIVE "T" CAPS TO SEAL THE NECK AT THE TOP OF THE RADIATOR. PLEASE SUGGEST GASKETS # 911 12222 AS THEY ARE VERY HELPFUL FOR SEALING THE DECORATIVE "T" CAPS.
February 04, 2015
baddassdeuce
Top left corner engine side ,threaded bung
1 answers

my question is does the valves get routed back thru the cooling system also which way does the valve go on thanks charles

John
collinwood tn
May 31, 2011

my question is does the valves get routed back thru the cooling system also which way does the valve go on thanks charles

Answers

June 07, 2011
John
This pressure relief valve is used on our T bucket radiators in the upper tank to relieve the pressure because of the rise in temperature of the coolant and the related expansion. The arrow on the valve marks direction of flow and would point downward from the upper radiator tank. Similar to the old style radiators and not to be compared with a recovery system as used on the later model vehicles. An overflow tank can be attached to the end opposite the tank to avoid fluid on pavement or vehicle used on.
1 answers

Do I need this part if I use an overflow tank?

Sean
Edgewater FL
October 17, 2015

Do I need this part if I use an overflow tank?

Answers

October 20, 2015
Eric
Expert
These relief valves are typically used with early radiators that originally had a vented cap. The cap is replaced with a non-vented version and this pressure relief valve is installed in the radiator to create a pressurized cooling system. This valve can be used in many other applications as well.
1 answers

is this a one way valve, or does it allow coolant to be drawn back into the radiator?

boaty
nm
January 30, 2016

is this a one way valve, or does it allow coolant to be drawn back into the radiator?

Answers

February 01, 2016
Eric
Expert
This is a one way valve. There is no way for the coolant to come back to the radiator. You will need to use a modern radiator cap in order for the coolant to be drawn back into the radiator.
1 answers

I want the radiator to recover the coolant. Can a second relief valve with a very weak check spring, or with the spring removed, be installed parallel but reversed. Pressure would hold it shut and vacuum would open it and suck the coolant back to radiator.

Jolly
TX
March 02, 2016

I want the radiator to recover the coolant. Can a second relief valve with a very weak check spring, or with the spring removed, be installed parallel but reversed. Pressure would hold it shut and vacuum would open it and suck the coolant back to radiator.

Answers

March 03, 2016
Eric
Expert
You may be able to make a custom valve to help with the recovery but you would probably have better results from putting your effort and fabrication into installing a modern pressure cap on your radiator so that the recovery function will work properly.
1 answers

Just to clarify, properly installed, the arrow on the valve points towards the ground, correct? Thank you, Larry

Larry
Canfield, Ohio
June 22, 2016

Just to clarify, properly installed, the arrow on the valve points towards the ground, correct? Thank you, Larry

Answers

June 23, 2016
Zach
Expert
Yes that is correct
1 answers

Can the pressure at relief be adjusted to 3 psi?

KHF
Austin, Texas
June 23, 2016

Can the pressure at relief be adjusted to 3 psi?

Answers

June 23, 2016
Zach
Expert
There is no adjustment on this pop off valve
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