69 and 70-71 Headlight Washer Check Valve Differences

[Rich P.]

I have been asked by customers what the difference is between a 69 and 70-71 headlight washer check valve. So while I have a few of each I figured I would post a picture of a 69 headlight washer check valve next to a 70-71. The 69 valve is on the left and the only difference is the center port. It is 3/16" while the 2 side ports are 1/8". The 70-71 valve has all 3 ports 1/8".
The position they are placed also differs from 69 to 70-71. The 69's used one at the front of the car just as the washer hose split to go to each headlight assembly. 69's also used one at the wiper motor/pump. 70-71 used 2 at each headlight where the hose split off to each squirter

As a side note I have also included a picture of the 69 washer hose TEE's that are used where the hose splits on each headlight to go to the squirters. These smaller TEE's are unique to the Corvette and Camaro in 69. In the picture of the 69 TEE's I included a normal 1/8 x 1/8 x 1/8 TEE for comparison.

The last picture is of the unique 69 washer pump Y connector. The center port is 3/16" while the 2 outer ports are 1/8" None of these TEE's, Y's or valves are being made in the correct configuration that I know of.

Question, Comments or Corretions are welcome. Untill a year or 2 ago I thought all the check valves were the same till I really started digging into this.

Rich

[Pat M.]

Re: 69 and 70-71 Headlight Washer Check Valve Differences

Interesting. The valves on my 70 look just like the 70 valves you've pictured. I didn't know there was a difference.

I'm a little confused by the statement "70-71 used 2 at each headlight where the hose split off to each squirter". I assume you mean 70-71s have 2 valves total at the front of the car, but only one at each headlight assembly, right?

[Rich P.]

Re: 69 and 70-71 Headlight Washer Check Valve Differences

Interesting. The valves on my 70 look just like the 70 valves you've pictured. I didn't know there was a difference.

I'm a little confused by the statement "70-71 used 2 at each headlight where the hose split off to each squirter". I assume you mean 70-71s have 2 valves total at the front of the car, but only one at each headlight assembly, right?

Pat,

yes thats correct. Thanks for catching that I an't too good at my grammer and proof reading.

Rich

[Robert E.]

Re: 69 and 70-71 Headlight Washer Check Valve Differences

In case anyone is interested, there is a set for sale on ebay. I'm not the seller nor do I know who the seller is. I just came upon them while surfing.

http://cgi.ebay.com/ebaymotors/70-71-Corvette-Headlight-Washer-Check-Valves-Hoses-/370439694567?pt=Motors_Car_Truck_Parts_Accessories&hash=item563fed28e7

[Terry M.]

Re: 69 and 70-71 Headlight Washer Check Valve Differences

I have been asked by customers what the difference is between a 69 and 70-71 headlight washer check valve. So while I have a few of each I figured I would post a picture of a 69 headlight washer check valve next to a 70-71. The 69 valve is on the left and the only difference is the center port. It is 3/16" while the 2 side ports are 1/8". The 70-71 valve has all 3 ports 1/8".
The position they are placed also differs from 69 to 70-71. The 69's used one at the front of the car just as the washer hose split to go to each headlight assembly. 69's also used one at the wiper motor/pump. 70-71 used 2 at each headlight where the hose split off to each squirter

As a side note I have also included a picture of the 69 washer hose TEE's that are used where the hose splits on each headlight to go to the squirters. These smaller TEE's are unique to the Corvette and Camaro in 69. In the picture of the 69 TEE's I included a normal 1/8 x 1/8 x 1/8 TEE for comparison.

The last picture is of the unique 69 washer pump Y connector. The center port is 3/16" while the 2 outer ports are 1/8" None of these TEE's, Y's or valves are being made in the correct configuration that I know of.

Question, Comments or Corretions are welcome. Untill a year or 2 ago I thought all the check valves were the same till I really started digging into this.

Rich

Rich,
Subject to my checking the car -- my memory of my 1970 is that it has one at each headlight assembly of the style shown in the left hand picture. The barrel style. Of course mine is an early car Jan 29 on the trim tag.

[Steven C.]

Re: 69 and 70-71 Headlight Washer Check Valve Differences

Rich, I recall having this exact conversation with a vendor at Carlisle and highlighting the differences for him. Not sure if it was you or not? Thanks for the pics.

[Rich P.]

Re: 69 and 70-71 Headlight Washer Check Valve Differences

Rich, I recall having this exact conversation with a vendor at Carlisle and highlighting the differences for him. Not sure if it was you or not? Thanks for the pics.

Steve,

nope I was at Carlisle buying not selling. I did get a few sets when I was out there.

Rich