Exhaust Brake Butterfly Valve

Product Description 

WG9731541080 exhaust brake butterfly valve is a core component of the original equipment manufacturer (OEM) exhaust braking system designed specifically for Sinotruk HOWO, HOWO A7, T7H, and other series heavy-duty trucks. This product enhances engine braking by instantly changing the exhaust passage opening in the exhaust pipe, increasing exhaust back pressure, and significantly reducing reliance on the main braking system during long downhill driving, thus improving driving safety. This butterfly valve uses a high-temperature oxidation-resistant cast steel valve body, a heat-resistant stainless steel valve plate, and a reinforced sealing structure, allowing it to operate stably under exhaust temperatures above 600℃, maintaining sensitive opening and closing and precise back pressure control over the long term. The product is fully compatible with the original vehicle's air control system and exhaust pipes, supports quick installation, and is particularly suitable for heavy-duty transportation, mountain roads, and high-frequency braking conditions.

Technical Specifications

Product Features 

High-Temperature Resistant Design

The valve body is made of oxidation-resistant cast steel and the disc is heat-resistant stainless steel, allowing stable operation under exhaust temperatures up to 650°C.

Precise and Fast Valve Response

Equipped with a high-performance pneumatic actuator, the valve opens and closes quickly (≤0.5s), providing precise backpressure control for the exhaust brake system.

Enhanced Sealing Performance

High-temperature resistant sealing rings prevent leaks and ensure consistent exhaust backpressure, improving engine braking efficiency and reducing brake wear.

OE Direct Replacement

Fully compatible with HOWO original exhaust brake systems. Standard flanged interface and mounting points allow plug-and-play installation without modification.

Reinforced Construction for Heavy-Duty Use

Designed for long-haul trucks, construction vehicles, and mountainous terrain operations. Robust structure resists vibration, impact, and high-pressure backflow.

Improved Engine and Brake Protection

Optimizes engine braking, reduces reliance on service brakes, extends brake system lifespan, and ensures safer downhill or heavy-load driving.

Why Choose This Valve 

Full OEM Compatibility: WG9731541080 matches original HOWO exhaust brake systems perfectly.

Durable & Reliable: High-quality materials and robust construction ensure long-term performance under extreme conditions.

Enhanced Safety: Provides stable exhaust braking, reducing risk of brake overheating and improving vehicle control.

Quick and Easy Installation: Standardized mounting and flanged connection, no modifications required.

Versatile Application: Suitable for HOWO A7, T5G, T7H, and heavy-duty 4×2, 6×4, 8×4 trucks used in logistics, construction, and mining.

Cost-Effective Replacement: OEM-quality performance at aftermarket price, ideal for fleet maintenance and spare parts management.