With two decades as a trusted authority in refrigeration compressors and their critical components, ascompressors.com understands that accurate pressure monitoring is fundamental to efficient operation, precise diagnostics, and preventing costly system failures. Pressure gauges are indispensable tools for technicians and system operators, providing immediate visual readings of refrigerant pressures in various parts of a refrigeration or HVAC system. As your dedicated supplier, we offer a comprehensive range of high-quality pressure gauges designed for the rigorous demands of commercial and industrial cooling applications.
A pressure gauge measures the force exerted by a fluid (in this case, refrigerant) per unit area. In refrigeration, these gauges are crucial for monitoring suction pressure (low side), discharge pressure (high side), and sometimes oil pressure. Accurate pressure readings allow technicians to diagnose issues like overcharge, undercharge, restricted flow, or compressor inefficiencies. They are essential for proper system charging, troubleshooting, and verifying optimal operating conditions, which directly impacts energy consumption and equipment lifespan.
Our extensive inventory includes a variety of pressure gauges, carefully selected for their precision, durability, and unwavering reliability in demanding refrigeration environments. We focus on providing solutions that offer clear, accurate insights and robust performance:
Compound Gauges (Low-Pressure Gauges): These gauges measure both positive pressure (typically 0 to 120 PSI/8 bar) and vacuum (in inches of mercury or mbar). They are used on the suction side of the compressor to monitor evaporating pressure and aid in system evacuation. We offer models with temperature scales for common refrigerants (e.g., R-22, R-134a, R-404A, R-410A) to easily convert pressure readings to saturation temperatures.
High-Pressure Gauges: These gauges measure positive pressure only, typically ranging from 0 to 500 PSI (35 bar) or higher. They are used on the discharge (high-pressure) side of the compressor to monitor condensing pressure. Like compound gauges, many high-pressure gauges feature integrated temperature scales for refrigerant saturation temperatures.
Manifold Gauges (Sets): A technician's essential tool, a manifold gauge set combines a high-pressure gauge and a compound (low-pressure) gauge into a single manifold block with multiple valves and hoses. This allows for simultaneous reading of both high and low side pressures, making system charging, recovery, and diagnostics much more efficient. We supply durable manifold sets with color-coded hoses, robust brass or aluminum bodies, and anti-flutter movements.
Oil Pressure Gauges: Specifically designed to measure the lubricating oil pressure in compressors equipped with force-feed lubrication systems. These are critical for monitoring the health of the oil pump and ensuring adequate lubrication to internal compressor components.
Analog (Bourdon Tube) Gauges: The traditional and most common type, using a coiled tube that straightens or bends with pressure changes, moving a needle across a dial. We offer gauges with various dial sizes (e.g., 2.5", 3.5"), accuracy classes, and robust casings (e.g., steel, stainless steel) for durability.
Digital Pressure Gauges: Offering higher precision, easier readability, and often additional features like temperature compensation, data logging, and refrigerant profiles. These are becoming increasingly popular for advanced diagnostics and efficiency optimization.
We ensure our pressure gauges are designed to withstand the vibrations, pressure pulsations, and temperature extremes common in refrigeration systems. They feature clear dials, durable connections (e.g., 1/8" NPT, 1/4" NPT), and are calibrated for accuracy.
The accurate pressure insights provided by our high-quality pressure gauges are vital across a broad spectrum of commercial and industrial cooling applications:
Refrigeration System Charging & Recovery: Essential for precisely charging systems with the correct amount of refrigerant and safely recovering it.
HVAC System Installation & Service: Crucial during installation, commissioning, and routine maintenance of central air conditioning units, chillers, and heat pumps.
Compressor Diagnostics: Helping technicians identify issues like faulty valves, inefficient operation, or internal problems by observing high and low side pressures.
Troubleshooting Refrigerant Issues: Diagnosing undercharge (low suction/discharge pressure), overcharge (high suction/discharge pressure), and non-condensable gases (high discharge pressure).
Preventive Maintenance: Allowing proactive monitoring of system health to detect gradual pressure changes that indicate impending problems before they lead to costly breakdowns.
Industrial Process Cooling: Monitoring pressures in large-scale chillers, cooling towers, and industrial refrigeration plants to ensure continuous, efficient operation.
At ascompressors.com, our 20 years in the refrigeration field have taught us that knowledge is power, and accurate pressure readings provide that power. A reliable pressure gauge is an indispensable tool for every technician, enabling precise adjustments and safeguarding your investment. By choosing our high-quality pressure gauges, you're investing in improved diagnostic capabilities, enhanced system efficiency, reduced troubleshooting time, and extended equipment lifespan for your refrigeration or HVAC system. Our technical team possesses the deep knowledge required to assist you in selecting the ideal gauge or manifold set for your specific refrigerant and application, ensuring accurate and reliable insights. Trust us to provide the crucial visibility your cooling solutions demand.
Here at A&S Aerodynamic, we offer a wide range of refrigeration compressors from various brands and models. Our products are sourced from reputable brands in the industry, so you can be sure they’re made to fit OE specifications.
1. Before shipping, we will send you photos of the actual product for your confirmation ( eg. nameplate, appearance, and report).
2. The product comes with a 1-year manufacturer warranty policy and 3-year in-house warranty.
3. If the product is damaged during transportation or cannot be repaired due to non-human-caused within 1 year, no return, we will directly refund or resend the new product.
4. For select items, we will include a repair kit ( Special Needs Customer Service ).
5. Enjoy a worry-free experience throughout the entire process. Feel free to request quotes and place orders with confidence, we will provide 5-star service until you are satisfied.
6. Shipping and Taxes: See Quotation.
Need your compressors as soon as possible? Don’t worry; our warehouses are strategically located across the country to ensure fast, efficient shipping. Our primary strength lies in supply capability. Whether it's OEM manufacturing or global inventory searches—from components to complete units—we can match your needs with the nearest partner's inventory for rapid delivery. Our global alliance enables transactions at wholesale agency rates. Welcome aboard! Cheers!!
The Nameplate is Key: The model number alone is sometimes insufficient. We request a clear photo of the manufacturer’s metal nameplate. This confirms the specific Series, Voltage, and Bill of Material (BOM) number.
Refrigerant Verification: You must confirm the gas type (e.g., R134a, R404A, R290, or R410A). Using the wrong refrigerant in a Pressure Gauge compressor designed for a different gas will lead to immediate failure and void the warranty.
Voltage & Frequency Check: Global power grids vary. Whether you need 115V/60Hz (USA), 220V/50Hz (Europe/Asia), or 3-Phase 380V, this must be explicitly confirmed during the inquiry stage to prevent electrical burnout.
Application Matching: We verify if your application requires LBP (Low Back Pressure for freezers), MBP (Medium), or HBP (High Back Pressure for A/C and chillers). Installing an LBP compressor in an HBP application will cause the motor to overheat.
Performance Benchmarking: Before shipment, units undergo rigorous testing for volumetric efficiency, motor amperage draw, and noise levels
The Test Report: For peace of mind, we can provide a Quality Inspection Report or a video of the Pressure Gauge compressor under load test, proving it holds pressure and operates within factory specifications before it leaves our facility.
Spot Buy (Ready Stock): For urgent repairs, we leverage our global inventory of popular brands (Tecumseh, Copeland, Danfoss) to offer "2nd-Day Dispatch" on common Pressure Gauge models.
Batch Production (OEM Orders): For distributors or appliance manufacturers requiring 50+ units, we schedule a production run. This typically requires a 2-4 week lead time but offers significant cost savings.
Condition Clarity: We clearly distinguish between "Factory New" (fresh production) and "New Surplus" (older stock). We allow you to choose based on your budget and warranty requirements.
Robust Crating: We do not use standard cardboard for international freight. All compressors are bolted to a pallet and sealed in fumigated wooden crates compliant with ISPM 15 standards for global entry.
Upright Transport: Compressors must remain upright to prevent oil from entering the compression chamber (which causes "liquid slugging"). Our packaging includes "This Side Up" shock sensors and indicators.
Customs & Documentation: We handle the complex paperwork, including Commercial Invoices and Certificates of Origin, ensuring your goods clear customs smoothly whether shipping via DHL Air Express or Sea Freight to any port in the world.