Dongfeng GX Degassing hose 1311031-H12B0 in stocked

The degassing hose features a highly flexible structural design that allows easy routing through the Dongfeng GX’s under-hood or undercarriage spaces. Its wall thickness (2-3mm) is optimized to balance flexibility and structural integrity—enabling it to bend around other components (e.g., wires, hoses, metal brackets) without kinking, which could block gas flow. The hose’s smooth inner wall (surface roughness Ra ≤ 0.8μm) minimizes resistance to gas movement, ensuring efficient evacuation of air or vapor from the fluid system. Additionally, the hose may include a spiral reinforcement layer (in heavy-duty GX variants) to prevent collapse under negative pressure, further guaranteeing unobstructed gas flow during operation

Hose Core: Constructed from high-quality EPDM (Ethylene Propylene Diene Monomer) rubber or NBR (Nitrile Butadiene Rubber), selected based on the specific fluid system it serves. EPDM rubber offers excellent resistance to coolants, water, and high temperatures (up to 150°C), making it ideal for engine coolant degassing. NBR rubber provides superior resistance to petroleum-based fluids (e.g., transmission oil) and operates reliably within a temperature range of -40°C to 120°C. Both materials are also resistant to ozone, aging, and UV radiation, preventing hardening or cracking over time.

Reinforcement Layer (if applicable): Made of high-tensile polyester yarn or steel wire, which enhances the hose’s burst pressure resistance (up to 1.5 MPa for EPDM variants) and prevents expansion under positive pressure.

Outer Cover: Coated with a smooth, abrasion-resistant rubber layer that protects the hose from damage caused by friction with surrounding components, road debris, or chemical splashes (e.g., oil, road salt)

As a key component of Dongfeng GX’s fluid systems, this degassing hose fulfills three essential functions:

Air/Vapor Removal: It efficiently channels trapped air or vapor from the fluid system (e.g., engine coolant, transmission fluid) to the expansion tank or atmosphere. This prevents the formation of air pockets, which can reduce heat transfer efficiency (in coolant systems) or cause fluid pressure irregularities (in transmission systems).

Fluid System Pressure Regulation: By removing excess gas, the hose helps maintain stable pressure within the fluid system. For example, in the coolant system, it prevents pressure buildup that could lead to coolant leaks or damage to the radiator, water pump, or hoses.

Component Protection: By ensuring proper fluid circulation (free of air pockets), the hose helps prevent overheating of critical components (e.g., engine, transmission) and reduces the risk of corrosion caused by stagnant fluid or air exposure

This degassing hose meets international automotive standards, including China’s GB/T 18947 (Rubber hoses and hose assemblies for automotive cooling systems) and ISO 6945 (Rubber hoses and hose assemblies for automotive use—Specification for fuel hoses), as well as IATF 16949 quality management requirements. Each unit undergoes comprehensive pre-shipment testing:

Pressure Testing: Subjecting the hose to 1.5 times its maximum working pressure (e.g., 2.25 MPa for EPDM variants) for 30 minutes to ensure no leakage or burst.

Temperature Resistance Testing: Exposing the hose to extreme temperatures (-40°C to 150°C) for 1000 hours to verify material stability and performance retention.

Chemical Compatibility Testing: Immersing the hose in relevant fluids (e.g., coolant, transmission oil) for 500 hours to check for swelling, hardening, or degradation.

Flexibility & Kink Resistance Testing: Bending the hose through 10,000 cycles at a radius of 5× its outer diameter to ensure no kinking or structural damage.

Backed by a 12-month manufacturer’s warranty, the hose provides reliable performance for Dongfeng GX’s fluid systems in various operating conditions, from urban commutes to long-haul trips