Description
140270 | PRESSURE PROTECTION VALVE
PART NUMBER(S):
Fleet Products: 140270 (New) | OE: Sealco 140270, Haldex RSL140270, Automann 170.140270
DESCRIPTION:
Model: Pressure Protection Valve (PPV) with Internal Check
Vehicles: Air brake equipped trucks and trailers
• Inlet Port: 3/8" NPT
• Outlet Port: 3/8" NPT
• Nominal Closing Pressure: 60 PSI (4.14 bar)
• Valve Type: Internal check valve design, protects reservoirs from depletion by failed air accessories
• Dimensions: Height 2.75", Width 3.84", Depth 0.81"
• Weight: ~0.53 lbs
• Repair Kit: 140271
• Function: Shuts off air flow below 60 PSI to protect reservoir supply, includes filter and positive one-way check valve
• Compliance: FMVSS 121
Applications:
Designed to protect trailer and truck air reservoirs from being depleted by other accessories. Common in applications with auxiliary air-operated components such as lift axles, suspension controls, or air-operated accessories.
CROSS-REFERENCE(S):
Sealco 140270, 680-140270, ESL140270, RSL140270, SEA140270, TWD140270, 55140270, SA140270, E-SL140270, SLC140270, GTA-140270, GTA140270, N15759DG, TWD110470, S-19351, S19351, TV140270, TV140270TEC, TDARSL140270, TDA RSL140270, SL140270, SL-140270, SC140270, A140270, MSV140270, AMMTRRSL140270, MTRRSL140270, HYU10000349, A100000291, A100047441, 10000349, 39540805, 41902928, 884879753416, E7072455, 205C140270, P130602, PB130602, PRO-PAR P130602A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Always install valve with vent port facing downward for proper operation
✔ Verify inlet and outlet port orientation before installation
✔ No field-service kits for the main valve; use repair kit 140271 if required
✔ Ensure installation meets FMVSS 121 compliance standards
| Part Number | Inlet Port (NPT) | Outlet Port (NPT) | Nominal Closing | Repair Kit | Notes |
| 140200 | 3/8" | 3/8" | 50 PSI | 140201 |
| 140270 | 3/8" | 3/8" | 60 PSI | 140271 |
| 140280 | 3/8" | 3/8" | 70 PSI | 140281 |
| 140290 | 3/8" | 3/8" | 80 PSI | 140291 |
| 140300 | 1/4" | 1/4" | 50 PSI | 140201 |
| 140370 | 1/4" | 1/4" | 60 PSI | 140271 |
| 140380 | 1/4" | 1/4" | 70 PSI | 140281 |
| 140390 | 1/4" | 1/4" | 80 PSI | 140291 |
| 140680 | 3/8" | 1/4" | 70 PSI | 140281 | Replaces 140580 |
- Can be used to direct fill system reservoirs because of the built in check valve.
- Always install with vent port downward.
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Warranty Information
