Difference between HB and GW manual valves - Train Horn Forums

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Old 25th January 2013
Angie@hornblasters Angie@hornblasters is offline
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Default Difference between HB and GW manual valves

Some have requested the difference between the Graham White 353 Series and the Hornblasters brand Manual Valve and why the huge difference in price.


Ready....


The Graham White is made in the U.S.A.....The Hornblasters, Inc. brand is imported over seas.

Tada!



Both valves are 1/2" NPT connections. Both are similar in dimensions and weight. The only other difference is the handle directions are opposite.

Here are some pictures.

GW on Right, HB on Left.
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  #2  
Old 25th January 2013
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DBO DBO is offline
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Default Re: Difference between HB and GW manual valves

This is great info. Here's some other bits which may interest people:

The Graham White valve can be found in various guises.

The GW 353-200
The GW-200 is an old design (no longer manufactured) which used a different valve body to what is seen today in the 100 series. The casing is larger because it had both ports facing downwards. A common misconception is that there is more air flow with the 200 valve series. The valve assembly has actually remained the same through both the 200 and 100 series so there is no difference in air flow.

The GW 353-100
This is the current design for the valve, with air ports being in-line to the valve handle. You can get modulating and non-modulating variants for the 353. Metered variants are distinguishable by a groove identification on the tip of the valve stem.
  • No Groove 1/8" Metered (24 cfm @140 PSI)
  • 1 Groove 1/16" Metered (12 cfm @140 PSI)
  • 2 Grooves 3/16" Metered (30 cfm @140 PSI)
  • 3 Grooves - Non Metered
All of the valves will flow 70 cfm @140 PSI in the fully open position.

-------
So where are the real performance differences between the clone and the GW?
- Warranty / Durability?
- Are the flow rates the same?
- Does the HB clone offer different flow or metering variants?
- Valve Parts (are they interchangeable?)
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Old 25th January 2013
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Default Re: Difference between HB and GW manual valves

Quote:
Originally Posted by Angie@hornblasters View Post
....Both are similar in dimensions and weight. The only other difference is the handle directions are opposite.....
It looks like you could take the 4 bolts out and rotate the handle in 90 degree increments. Is that ok?

Quote:
Originally Posted by DBO View Post
...Metered variants are distinguishable by a groove identification on the tip of the valve stem...
I have a GW and don't see any grooves. Are they obvious? Does anybody have a pic?
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Old 25th January 2013
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Default Re: Difference between HB and GW manual valves

Quote:
Originally Posted by ear2ear View Post
It looks like you could take the 4 bolts out and rotate the handle in 90 degree increments. Is that ok?
I'm pretty sure you can on the GW. Don't know about the other one.

Quote:
Originally Posted by ear2ear View Post
I have a GW and don't see any grooves. Are they obvious? Does anybody have a pic?
Should be pretty obvious. Right on the top of the valve stem. See attached. My GW is a 1/8th metered, so I'm not groovie either.
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Train Entertainment System:
- 2010 Suzuki Grand Vitara with Twin Viair 480C's; 200psi; Norgren regulator (R73G-4AK-RMG);Twin 1/2" lines (GW line regulated @110, SMC line @200); 5 gal.tank; K3LA on custom manifolds; SMC/VA85 solenoid; Graham White 353-100 (Install | Videos | Schematic).

The Collection:
Leslie SuperTyfon: RS5T, RSL3L
Nathan Airchime: K5LLA, K3LA
Shocker S4 XL
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Old 25th January 2013
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Tlauden Tlauden is offline
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Default

Thanks for the info, ive been wondering what the differences were.



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Old 26th January 2013
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Default Re: Difference between HB and GW manual valves

Quote:
Originally Posted by DBO View Post
I'm pretty sure you can on the GW. Don't know about the other one.


Should be pretty obvious. Right on the top of the valve stem. See attached. My GW is a 1/8th metered, so I'm not groovie either.
Thanks for the pic - that is pretty obvious. Mine is definitely grooveless.
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Old 28th January 2013
Angie@hornblasters Angie@hornblasters is offline
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Default Re: Difference between HB and GW manual valves

Quote:
Originally Posted by DBO View Post
This is great info. Here's some other bits which may interest people:


So where are the real performance differences between the clone and the GW?
- Warranty / Durability?
- Are the flow rates the same?
- Does the HB clone offer different flow or metering variants?
- Valve Parts (are they interchangeable?)
Both valves come with a one year warranty.
I am in the process of researching flow rates and metering variants but I am having very little luck.
We have never tried or heard of anybody who tried to interchange the parts so this I am not sure of.
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HornBlasters, Inc.
39440 Pattie Road
Zephyrhills, FL 33540-3158
USA
Toll Free: 1-877-209-8179
Phone: +1 (813) 783-8058 x308
Email: Angie@hornblasters.com
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Old 28th January 2013
Angie@hornblasters Angie@hornblasters is offline
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Default Re: Difference between HB and GW manual valves

Quote:
Originally Posted by ear2ear View Post
It looks like you could take the 4 bolts out and rotate the handle in 90 degree increments. Is that ok?
We have taken both valves apart and it does look as though you can take the 4 bolts out, rotate the handle and still work properly.
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HornBlasters, Inc.
39440 Pattie Road
Zephyrhills, FL 33540-3158
USA
Toll Free: 1-877-209-8179
Phone: +1 (813) 783-8058 x308
Email: Angie@hornblasters.com
AIM: hornblasters
Facebook: www.facebook.com/hornblasters
Myspace: www.myspace.com/hornblasters
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  #9  
Old 31st January 2013
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Default Re: Difference between HB and GW manual valves

I will confirn you can remove the bolts and turn the handle. IO did that on my old truck when i wanted the handle pointed toward me instead..
I'd be curious to see if you can hear a difference with both handles hooked up to a k3 or k5 at same time... Ive always wondered if my clone GW was restrictive and didnt allow the k3 to sing in its full glory.
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Old 3rd February 2015
Helldyce Helldyce is offline
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Default Re: Difference between HB and GW manual valves

Hey guys, Just been looking at the pics of these two valves and I notice quite a few differences between the HB clone valve and the GW valve and 2 of them involve flow rate.
1) Looks like the HB clone valve has a smaller diameter valve stem. GW valve looks like it has a larger diameter valve stem. That may tell you that the seat may be bigger also. You know what they say, bigger is better! lol
2) The IN port opening on the HB clone is smaller and more restrictive than the GW IN port. Look again at the picture where the ports are facing you and notice the gap at the bottom half of the port on both valves. You will also see that the port on the HB clone is machined flat against the valve housing inside the port on the left side. This tells you that air will hit that during its travel into the valve and it also tells you that the GW valve housing is cast different in a good way.
3) The handle on the HB clone valve is light in material and not as strong.
4) HB clone - No lock washers under the bolt heads.
5) HB clone - valve housing casting different.

These are just some of the differences that I noticed just from looking at a few pictures. I'm sure that the HB clone valve will work for people and they will use it without any problems and they would never notice any difference even in flow rate, but until you have both of them in hand and also do a comparison on a real horn with a flow meter, then I believe you will notice.
I'm taking a guess that the internal parts in both of these valves would not be interchangeable also.

Last edited by Helldyce; 3rd February 2015 at 11:32 PM.
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