Description
110250 – AIR STARTER VALVE – PISTON RELAY HIGH FLOW (SEALCO STYLE)
PART NUMBER(S):
Fleet Products: 110250 (New) | OE: 10900, 11900, 14900
DESCRIPTION:
Model: 110250 Piston-Operated Relay Valve
Vehicles: Diesel engine platforms for truck, bus, construction, marine, and off-road
• Inlet Port (NPT): 1½″
• Outlet Port (NPT): 1½″
• Application Port (NPT): ¼″
• Auxiliary Port (NPT): ¼″
• Seal Material: Nitrile O-Rings
• Cv (Flow Coefficient): 41
• Max Pressure: 150 psi (up to 450 psi for some variants)
• Operating Temp: –20°F to 200°F (–29°C to 93°C)
• Housing: Aluminum (nickel-plated in TurboValve variants)
• Weight: ~2.9 lbs
• Mounting: 3-point body attachment (no bracket holes)
Applications: This valve drives pneumatic starter motors by delivering large-volume air rapidly. Designed for heavy-duty diesel engines in vehicles, equipment, or marine platforms requiring fast-start capability.
CROSS-REFERENCE(S):
110250, 10900, 11900, 14900, SRV125, SRV150, 110390, RLVA-25683A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Mounts inline via 3-body holes or integrated in-line connection
✔ Thread sealant must be used on all NPT ports before pressurizing
✔ Auxiliary port is open and can be used for test, bleed, or sensing
✔ Bleed air system fully before any disassembly or maintenance
| Part Number | Inlet Port (NPT) | Outlet Port (NPT) | Application Port (NPT) | Auxiliary Port (NPT) | Comments |
| 10900 | 1 1/2" | 1 1/2" | 1/4" | Closed | Nitrile O-Rings |
| 110250 | 1 1/2" | 1 1/2" | 1/4" | 1/4" | Nitrile O-Rings |
| 110390 | 1 1/4" | 1 1/4" | 1/4" | 1/4" | Viton O-Rings |
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Warranty Information
