QUICK RELEASE VALVE 22MM RL3516JA
Description
🔧 Overview: SORL RL3516JA Quick Release Valve
The SORL RL3516JA is a quick-release air brake valve designed for rapid air exhaust when brakes are released. It is commonly used on heavy trucks, trailers, and buses—especially in SORL-based systems
📐 Key Specifications
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Inlet Port Size: 22 mm (approximately ¾″ thread)
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Outlet Ports: Typically two delivery ports (commonly 1 × 22 mm inlet to 2 × 16 mm outlets) for supply & balance lines
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Function: Quickly vents air to atmosphere upon brake release, speeding up response time and improving brake efficiency
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Construction: Durable cast aluminum or similar alloy, compact body often with bolt-on mounting capability
🧪 Performance Characteristics
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Crack (Operating) Pressure: Often very low (~0 psi) for immediate activation upon pressure drop—characteristic of models like QR‑1C design, which RL3516FD07 closely resembles
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Pressure Range: Designed for typical truck air system pressures (usually up to 10 bar).
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Flow Efficiency: Balanced to support quick exhaust across multiple service lines without delay.
🔄 Cross‑References & Compatibility
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Produced by SORL Auto Parts, a global OEM & aftermarket supplier to commercial vehicle manufacturers and export markets
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Compatible with Volvo, Scania, and other heavy vehicles using similar port configurations; cross-referenced to numbers like 229859 and other aftermarket equivalents (e.g. Bendix, Haldex)
⚙️ Common Usage & Installation Context
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Installed in the air brake circuit to provide rapid venting of brake chambers when brake pedal is released.
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Frequently paired with a double-check valve to separate emergency and service lines in dual‑circuit systems.
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Known variants include RL3516SA, RL3516DA, RL3516FD07 (QR‑1C style) – similar functions but may differ in port sizing or certifications
📊 Summary Table
| Feature | Details |
|---|---|
| Model | RL3516JA |
| Maker | SORL Auto Parts (China OEM) |
| Port Configuration | 1 × 22 mm In → 2 × 16 mm Out |
| Mounting Style | Bolt-on base (compact design) |
| Crack Pressure | ~0 psi for immediate responsiveness |
| Material | Cast aluminum or lightweight alloy |
| Vehicles Used On | Heavy-duty trucks, trailers, buses |
✅ Takeaway
The RL3516JA Quick Release Valve is built for reliability and fast response in truck air brake systems. With its 22 mm fitting, efficient flow pathways, and low activation pressure, it ensures safe, swift brake release—ideal for SORL‑spec systems on heavy vehicles.
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