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DABUND
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Brass
Application
Manifold Gauge Set for R134a, R410A, R404A and R22
The Manifold Gauge Set for R134a, R410A, R404A and R22 is a professional HVAC and refrigeration service tool used for pressure testing, refrigerant charging, evacuation and system diagnosis.
Also called HVAC gauges, AC manifold gauges or refrigeration gauges, this tool helps technicians measure low-side and high-side refrigerant pressure when servicing air conditioners, refrigerators, heat pumps and cooling systems.
Dabund supplies manifold gauge sets, charging hoses, HVAC tools and air conditioner installation accessories for contractors, refrigeration technicians, distributors, wholesalers and OEM buyers.
Product Images
Testing Manifold Double Meter Valve
Filling Hose
Product Overview: HVAC Manifold Gauge Set
This manifold gauge set is designed for air conditioner charging, refrigerant pressure testing, vacuum evacuation and troubleshooting during HVAC and refrigeration maintenance.
It allows technicians to monitor low-pressure and high-pressure readings with analog gauges, helping identify common system issues such as undercharging, overcharging, pressure imbalance, refrigerant leakage and restricted flow.
Key Features of Manifold Gauge Set R134a R410A R404A R22
Compatible with common refrigerants including R134a, R410A, R404A and R22 service applications.
Designed for HVAC, refrigeration, air conditioning and cooling system maintenance.
Measures both low-side and high-side refrigerant pressure.
Suitable for charging, testing, evacuation and troubleshooting work.
Analog gauge display supports clear pressure reading during service.
Double O-ring piston valve design helps improve sealing performance.
Filling hoses are suitable for refrigerant charging and service connection.
Useful for diagnosing refrigerant leaks, charging issues and cooling performance problems.
OEM packaging, logo printing and bulk supply are available for distributors.
Technical Specifications
| Specification | Detail |
| Product Name | Manifold Gauge Set R134a R410A R404A R22 |
| Product Type | HVAC manifold gauge / refrigeration gauge set |
| Compatible Refrigerants | R134a, R410A, R404A, R22 and related service applications |
| Gauge Type | Analog mechanical gauge |
| Measured Pressure | Low-side and high-side refrigerant pressure |
| Valve Design | Double O-ring piston valve |
| Included Parts | Manifold body, pressure gauges and filling hoses |
| Application | Air conditioner charging, refrigerant testing, evacuation and HVAC troubleshooting |
| Customization | OEM logo, packaging and configuration customization available |
Air Conditioner Charging and Testing Manifolds
Manifold gauge sets are used to monitor refrigerant pressure when servicing air conditioning and refrigeration systems. They help technicians evaluate system performance before charging, recovery, evacuation or repair work.
All manifolds use double O-ring piston valves. Manifolds with a sight glass allow technicians to view refrigerant liquid flow during service work.
Main Applications
Residential air conditioner service.
Mini split AC installation and maintenance.
Commercial refrigeration system diagnosis.
Heat pump pressure testing.
Refrigerant charging and recovery work.
Vacuum evacuation before system charging.
Leak diagnosis and system performance troubleshooting.
HVAC contractor and refrigeration technician service kits.
Benefits for HVAC Technicians
Accurate Pressure Diagnosis
The gauge set helps technicians compare low-side and high-side pressure readings, making it easier to identify charging problems, system restrictions, leaks or compressor-related issues.
Supports Multiple Refrigerants
The manifold gauge set supports common refrigerant service applications including R134a, R410A, R404A and R22, making it suitable for different HVAC and refrigeration systems.
Practical for Charging and Evacuation
It can be used during refrigerant charging, vacuum evacuation and system testing, helping technicians complete maintenance work more efficiently.
Durable Service Tool for Contractors
The manifold body, valves and filling hoses are designed for regular HVAC field service, making the set suitable for contractors, installers and maintenance teams.
Safety and Calibration Notes
Gauge Calibration
Before use, check whether the gauges read 0 psi. If the gauges do not return to 0 psi, remove the gauge face and adjust the calibration screw to zero before service work.
High-Side Valve Safety
Never open the high-side valve on the manifold gauge set while the air conditioning system is operating. Incorrect operation can cause unsafe pressure release or equipment damage.
Professional Refrigerant Handling
Refrigerant service should be performed by trained personnel using proper recovery, evacuation, charging and leak-testing procedures according to equipment instructions and local requirements.
How to Use a Manifold Gauge Set
Confirm the refrigerant type and service port size before connection.
Check that the gauges are calibrated to 0 psi before use.
Connect the low-side hose to the suction service port.
Connect the high-side hose to the discharge or liquid service port where applicable.
Connect the center hose to a vacuum pump, refrigerant cylinder or recovery machine depending on the service task.
Read pressure values and compare them with the system manufacturer’s service data.
After service, close valves, disconnect hoses safely and install service port caps.
Why Choose Dabund Manifold Gauge Set?
HVAC Parts Manufacturer Since 2008
Dabund has produced HVAC tools, installation accessories, insulated copper pipe, mini split line sets and air conditioner parts since 2008.
Stable Export Supply
Dabund supports global buyers with export packaging, stable supply and shipping experience for HVAC accessories and service tools.
OEM and ODM Support
Custom logo, private-label packaging, carton design and product configuration can be supplied for HVAC distributors and wholesale buyers.
FAQ
What is a manifold gauge set used for?
A manifold gauge set is used to measure refrigerant pressure, charge refrigerant, evacuate systems and diagnose HVAC or refrigeration problems.
Which refrigerants does this manifold gauge set support?
This manifold gauge set supports common service applications for R134a, R410A, R404A and R22 refrigerants.
Can this gauge set be used for air conditioners?
Yes. It can be used for air conditioner charging, pressure testing, vacuum evacuation and troubleshooting during AC service.
Can it be used for refrigeration systems?
Yes. It is suitable for many refrigeration service applications when the refrigerant type, hose connection and pressure range match the system requirements.
What do the low-side and high-side gauges measure?
The low-side gauge measures suction-side pressure, while the high-side gauge measures discharge-side or liquid-side pressure depending on the HVAC system design.
Why should the gauge read 0 psi before use?
A zero reading helps confirm gauge calibration. If the gauge does not read 0 psi before use, the pressure reading may be inaccurate.
Can I open the high-side valve while the AC system is running?
No. Never open the high-side valve on the manifold gauge set while the air conditioning system is operating.
Is this tool suitable for professional HVAC contractors?
Yes. It is designed for HVAC technicians, refrigeration service teams, AC installers and maintenance contractors.
Can Dabund customize the manifold gauge set packaging?
Yes. Dabund accepts OEM and ODM orders, including logo printing, private-label packaging and custom carton design.
Are you a trading company or manufacturer?
Dabund is a manufacturer and supplier of HVAC tools, manifold gauge sets, installation accessories, insulated copper pipe and mini split line sets.
Can I get samples?
Yes. Dabund can provide samples for qualified customers. You can request samples through the sample page.
What payment terms are available?
Payment terms may include T/T, L/C at sight, credit card and other agreed payment methods depending on order details.
What delivery terms can you offer?
Dabund can offer common international trade terms such as EXW, FOB, CFR and CIF.
How long is your delivery time?
Normal delivery time is usually 15 to 20 days. For urgent orders, production and shipment can be arranged according to factory schedule.
