17369 Watson-Chalin Ratio Valve

17369 Watson-Chalin Ratio Valve

17369 Watson-Chalin Ratio Valve

Used primarily in vehicular air brake systems, this valve is a three-way, compensating, pilot pressure-operated relay valve.  This valve delivers an output pressure that is proportional to the amount of control pressure applied.  There is an adjustment which allows the output/control pressure ratio to be changed. It is also used in some lift axle applications.

Specs:

• Adjustable (from 20%< to 30%> control psi.)
• PORT SIZE:  1/4-18 NPTF
• MAXIMUM OPERATING PRESSURE: 150 PSI
• OPERATING TEMPERTURE: -20°F (-28,9°C) to 200°F (93,3°C)
• FLOW RATING: 50 SCFM@ 100 PSI (1, 0 m3/min@ 690 kPa)
• CRACK PRESSURE: 1.5 PSI (10,3 kPa) w/100 PSI (690 kPa) Supply
• OUTPUT ADJUSTABILITY: 20% less than control pressure to 30% greater than control pressure
• MATERIALS: Body Castings Die Cast Aluminum
• Diaphragms: Fabric-Reinforced Buna N
• Poppet: Chrome-Plated Brass w/ Buna N Insert
• Bumper & 0-Rings: Buna N

Drawing and Spec Sheet:

• ACK124-with17369