21243502 | Genuine Volvo® / Mack® RV‑3 Pre-Set Pressure Reducing Valve for Truck Air Brake Systems

SKU: 21243502 MPN: 21243502

Experience steady brake-air control with the Genuine RV-3 Pre-Set Pressure Reducing Valve. Brand: Volvo/Mack. Part number: 21243502. Condition: new. This valve maintains consistent outlet pressure to support reliable brake modulation in daily operation.

$179.00
No Core Charge
3 in stock

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Product Description

Product Name Pressure Reducing Valve Product Name Pressure Reducing Valve
Model RV‑3 Model RV‑3
Condition New Condition New
Brand Volvo® / Mack® Brand Volvo® / Mack®
Part Number 21243502 Part Number 21243502
Engine Compatibility
Volvo D11, D13 Volvo D11, D13
Vehicle Compatibility
Truck Mack/Volvo Truck Mack/Volvo
Truck Freightliner Truck Freightliner
Truck Kenworth Truck Kenworth
Specifications
Minimum Operating Temperature -40 °F (-40 °C) Minimum Operating Temperature -40 °F (-40 °C)
Maximum Operating Temperature 200 °F (93 °C) Maximum Operating Temperature 200 °F (93 °C)
Delivery Port 1 1/4-18 NPT Delivery Port 1 1/4-18 NPT
Control Port 1/8-27 NPT (Plugged) Control Port 1/8-27 NPT (Plugged)
Delivery Pressure 35 - 39 PSI Delivery Pressure 35 - 39 PSI
Supply Port 1/4-18 NPT Supply Port 1/4-18 NPT
Exhaust Port Dust Shield Exhaust Port Dust Shield
Mounting Ø .28 IN (2x) Mounting Ø .28 IN (2x)
Length 50.0 mm (1.97 in) Length 50.0 mm (1.97 in)
Width 35.1 mm (1.38 in) Width 35.1 mm (1.38 in)
Height 75.2 mm (2.96 in) Height 75.2 mm (2.96 in)

Useful Information

Description and Purpose:

This Genuine RV-3 Pre-Set Pressure Reducing Valve from Volvo/Mack, listed under Part number: 21243502 in new condition, is designed to stabilize downstream air pressure within heavy-duty brake systems. Its calibrated output range helps the pneumatic circuit maintain steady, predictable behavior under diverse operating loads.

Why Replacement is Important:

A worn valve can drift from its intended pressure range, reducing system balance and brake responsiveness. Timely replacement restores dependable modulation and prevents uneven air-system performance.

Impact on Vehicle Performance:

With a correctly functioning pressure-reducing valve, the brake system responds more consistently, air delivery remains uniform, and overall pneumatic stability improves during demanding driving conditions.

Manufacturer Information:

Volvo® builds commercial vehicles known for durability, efficiency, and safety in global fleet use. 

Mack® is recognized for rugged designs engineered for heavy workloads and long service life in vocational and highway applications.

Tags & Category: RV‑3 Pre-Set Pressure Reducing Valve, Truck Air Brake Pressure Valve, Air Brake System Pressure Regulator, Pneumatic Pressure Control Valve, Heavy Duty Brake Pressure Valve, Truck Brake System Valve, Air Brake Pressure Modulator, Pneumatic Brake Pressure Regulator

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 21243502