Hongsen Oil Filled Vacuum Pressure Gauge – Model Selection The Hongsen Oil Filled Vacuum Pressure Gauge is available in a range of models for different refrigerants and HVACR pressure monitoring requirements. The series includes high-side (H) and low-side (L) versions, with a 63 mm dial and 1/4 SAE connection for convenient installation and servicing. Available Models 242# H / 242# LCompatible with R404A, R407C, R22, and R134a. Features glycerin filling with psi/MPa pressure units. 128# H / 128# LDesigned for R410A systems. Uses silicone oil and supports psi and kg/cm² pressure units. 191# H / 191# LSuitable for R404A, R407C, R22, and R134a. Features silicone oil and MPa pressure measurement. 122# H / 122# LCompatible with R404A, R407C, R22, and R134a. Uses glycerin filling with MPa/psi pressure units. 59# H / 59# LDesigned for R404A, R407C, R22, and R134a. Provides psi/MPa pressure measurement without oil filling. Key Specifications Dial Size: 63 mm Connection: 1/4 SAE High & Low Side: H models for high-side pressure; L models for low-side applications Oil Options: Glycerin, silicone oil, or non-filled, depending on model Pressure Units: psi, MPa, or kg/cm², depending on model Temperature Unit: °C Applications The Hongsen Oil Filled Vacuum Pressure Gauge is suitable for air conditioning maintenance, refrigeration servicing, refrigerant charging, pressure testing, and HVACR sys
Hongsen Oil Filled (vacuum) Pressure Gauge
The Hongsen Oil Filled Vacuum Pressure Gauge is designed for accurate pressure and vacuum monitoring in HVAC and refrigeration systems. Its oil-filled construction helps improve gauge stability by reducing the effect of vibration and pulsation, making it suitable for demanding refrigerant servicing and maintenance applications. With a clear display and reliable pressure monitoring, this gauge is a practical tool for HVAC technicians, refrigeration professionals, and HVACR suppliers in the UAE. Key Features Oil-Filled Design: Helps reduce vibration and pointer fluctuation for more stable pressu
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