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SHK-228-004 3/8-24UNF AC Pressure Switch | R-12/R-134a 0.196-3.14MPa Universal

SHK-228-004 3/8-24UNF AC Pressure Switch | R-12/R-134a 0.196-3.14MPa Universal

The customizable SHK-228-004 AC pressure switch features 3/8-24UNF male thread, dual refrigerant compatibility (R-12/R-134a), and operates at HP OFF 3.14MPa/LP OFF 0.196MPa. Designed for all vehicle models, it provides dual protection against over/under pressure, with flexible customization for specific installation needs.

Model:
SHK-228-004 AC pressure switch
Brand:
SHINE
Code:
20221182


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Product Description

SHK-228-004: Customizable Dual-Refrigerant AC Pressure Switch for Universal Fit

The SHK-228-004 is a versatile air conditioning pressure switch (with customizable specs) engineered for universal compatibility across all vehicle models, supporting both legacy and modern AC systems:

Category	Item	Specification
Thread Size	Connection Type	3/8-24UNF Male (Customizable)
Operating Pressure	HP OFF Pressure	3.14MPa (Overpressure Protection)
	LP OFF Pressure	0.196MPa (Underpressure Protection)
Compatibility	Refrigerant Type	R-12; R-134a
Application	Vehicle Fit	All Vehicle Models

In automotive AC systems, it acts as a critical dual-protection component—triggering HP OFF at 3.14MPa to shield compressors from overpressure damage and LP OFF at 0.196MPa to avoid underpressure malfunctions. The 3/8-24UNF male thread (a standard automotive AC fitting) ensures seamless installation on passenger cars, SUVs, commercial vehicles, and trucks without adapters.

Dual compatibility with R-12 and R-134a refrigerants makes it ideal for both classic and modern vehicles, enhancing its versatility as a replacement part. Its robust construction withstands extreme temperature fluctuations (-40~85℃) and engine vibration, while customizable parameters (thread size, pressure thresholds, refrigerant compatibility) cater to specialized vehicle setups.

SHK-228-004: Industrial-Grade Quality & Customizable Reliability

The SHK-228-004 adheres to strict automotive component standards, balancing durability with customization flexibility:

Pressure Precision: Calibrated to HP OFF 3.14MPa/LP OFF 0.196MPa (±0.05MPa tolerance) for accurate dual protection, with customizable pressure ranges available (0.1~3.45MPa).
Durable Construction: High-quality brass housing with corrosion-resistant plating meets industrial sealing standards, ensuring leak-proof performance (leakage rate <1%).
Dual Refrigerant Support: R-12/R-134a-specific seal materials ensure chemical stability, with compatibility for other refrigerants via customization.
Rigorous Testing: Undergoes ≥100,000 cycle pressure tests, high/low-temperature endurance trials, and automotive-grade vibration resistance testing—customized units receive model-specific validation.
Traceability & Warranty: 18-month warranty; batch production records and customization specs are fully traceable, meeting global automotive aftermarket requirements.

Application

The customizable SHK-228-004 AC pressure switch applies to all vehicle models (passenger cars, SUVs, commercial vehicles, trucks) for AC system protection. It monitors R-12/R-134a refrigerant pressure, triggering HP OFF at 3.14MPa and LP OFF at 0.196MPa to prevent component damage, with 3/8-24UNF (or custom) male thread for universal/specialized installation.