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QYK-141 Pressure Switch - 7/16-20UNF Female, 2.65MPa OFF/2.05MPa ON

Model: QYK-141; Thread: 7/16-20UNF Female; Switch points: OFF=2.65MPa, ON=2.05MPa; Working pressure: Medium-high grade; Temp range: Ambient -30°C~+80°C, Medium -50°C~+120°C; Electrical rating: 125VA (24Vac), 375VA (120/240Vac); Life cycles: 30k/50k/100k optional; Burst pressure: 5000PSI.

Model:
QYK-141 Pressure Switch
Brand:
SHINE
Code:
20221163


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Product Description

QYK-141 Pressure Switch

A reliable medium-high pressure control solution, the QYK-141 is engineered with a 7/16-20UNF female thread and precise switching performance. It combines robust construction, easy integration, and stable operation to meet the pressure protection needs of HVAC systems, refrigeration equipment, and industrial machinery.

Core Advantages

Precise pressure control: Triggers OFF at 2.65MPa to prevent overpressure damage and auto-resets ON at 2.05MPa, ensuring timely system protection and stable recovery for medium-high pressure circuits.
Easy installation: 7/16-20UNF female thread (standard industrial thread) enables secure and compatible connection to standard pipelines, simplifying integration into existing systems. Factory-pre-set parameters allow immediate use without on-site adjustment.
Durable & reliable: Sealed structural design enhances leak-proof performance and resistance to harsh working conditions. Wide temperature tolerance (-30°C~+80°C) adapts to diverse environments, ensuring long-term stable operation.

Key Specification Table

Parameter	Details
Model	QYK-141
Thread Interface	7/16-20UNF Female
Switch Action Points	OFF: 2.65MPa; ON: 2.05MPa
Operating Temperature	Ambient: -30°C~+80°C; Medium: -50°C~+120°C
Electrical Capacity	125VA (24Vac); 375VA (120/240Vac)
Service Life Cycles	30,000/50,000/100,000 times (optional)
Burst Pressure	5000PSI

Working Principle

Equipped with an internal reversible stainless steel diaphragm. When system pressure reaches 2.65MPa, the diaphragm flips to disconnect the switch (OFF), avoiding overpressure-related failures. As pressure drops to 2.05MPa, the diaphragm automatically resets, re-engaging the switch (ON) to restore system operation—achieving seamless auto-control without manual intervention.

Application

Key Application Scenarios

HVAC & Refrigeration Medium-High Pressure Systems

Ideal for commercial and industrial air conditioning units, large-scale refrigeration systems, and cooling equipment with medium-high pressure refrigerant circuits. The 7/16-20UNF female thread fits standard industrial pipelines, protecting compressors and pipelines from pressure spikes, and maintaining stable cooling efficiency in commercial buildings and industrial facilities.

Industrial Medium-High Pressure Equipment

Suitable for hydraulic systems, high-pressure pneumatic tools, pressure vessels, and industrial process pipelines. Widely used in manufacturing, construction machinery, and automotive production lines. Its precise switching performance and durable design ensure reliable protection for critical machinery, adapting to the rigorous demands of industrial working environments.