Prevost level low valves

[MagnoliaBus]

Are they parker valves (the ones bolted to the frame in the rear) ?

[Bill Gerrie]

A friend of mine that replaced the level low stuff said they were Norgren valves.

[robertglines1]

they are norgen.  there are 6 in rear . On the site at prevostcar.com they give you prevo number and mfg Number

[luvrbus]

They could be Humphrey valves on your model if so you can replace with a Norgren which is supposed to be the better of the 2 evils 

[robertglines1]

Last time I just took the old norgren and laid it on my local supply(truck) counter the guy walked in back to back and came out with same (5 port configureation.)  $84 0ut door. there kits for rebuild if you have good core--probably is corroded from moist air in system.  While your there use compression fittings when you put back..  The push fittings tend to leak with temp change.  FWIW   Bob

[luvrbus]

Last time I just took the old norgren and laid it on my local supply(truck) counter the guy walked in back to back and came out with same (5 port configureation.)  $84 0ut door. there kits for rebuild if you have good core--probably is corroded from moist air in system.  While your there use compression fittings when you put back..  The push fittings tend to leak with temp change.  FWIW   Bob

They are 90 bucks at Prevost with a few discounts

[MagnoliaBus]

Mine being a seated coach, i will have to modify the valves arrangement if i want to ajust leveling on an uneven site.