AIR CONDITIONING SERVICE VALVES (1/4″ TO 7/8″)

Description

The Air Conditioning Service Valves (1/4″ to 7/8″) are high-reliability isolation components engineered for installation on outdoor split system condensing units, ductless mini-splits, and packaged HVAC systems. Manufactured across line sizes from 1/4″ to 7/8″ OD, these service valves control refrigerant flow between the indoor evaporator coil and outdoor compressor unit. Each valve features a heavy-duty forged metal alloy body, an integrated service gauge port with core valve, extended copper tailpieces for smooth field brazing, and metal protective caps. During installation or maintenance, these valves allow technicians to isolate the refrigerant charge within the condensing unit during pump-down procedures or perform vacuum evacuation and system pressure checks.

Technical Specifications

Key Features

• Complete Size Range (1/4″ to 7/8″): Full sizing availability to service small residential mini-splits up to large commercial condensing units.

• Forged Metal Alloy Housing: High-strength body withstands elevated system working pressures and severe outdoor weather exposure.

• Extended Copper Stub Ends: High-purity copper tailpiece design simplifies sweating/brazing into field suction and liquid line piping.

• Built-in Service Access Port: Standard 1/4″ flare port allows fast connection of manifold gauge hoses for charging, recovery, and pressure testing.

• Secure Threaded Sealing Caps: Metal alloy caps with internal rubber seals prevent slow refrigerant leaks at stem and port access points.

• Simple Allen Wrench Operation: Internal hex socket stem allows quick opening, closing, and front-seating during pump-down procedures.

Supported Applications

• Residential Split AC Units: Liquid line and suction line connection ports on mini-split outdoor condensing units.

• Commercial HVAC & Heat Pumps: Outdoor unit isolation valves for VRF/VRV systems, light commercial chillers, and packaged units.

• Refrigeration Condensing Units: Cold room and freezer condensing unit liquid and suction line service connections.

Benefits

• Simplifies routine system maintenance, vacuum evacuation, and refrigerant charging.

• Allows complete containment (pump-down) of refrigerant inside the condenser during indoor unit repairs.

• Extended copper stubs reduce thermal transfer to internal stem seals during field brazing.

Package Includes

• 1 x AC Service Valve (Selected Size: 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, or 7/8″)

• Matching Metal Alloy Stem Caps & Flare Port Dust Nut

Important Buyer Verification Notes

Notice for Technicians & Contractors: Confirm line size (1/4″ to 7/8″) matching your suction or liquid refrigerant pipe. Always remove the internal Schrader valve core and wrap the valve body in a damp cloth during brazing to avoid thermal seal damage.

Why Buy From Al Ramiz

• Genuine Quality Parts: Field-tested HVAC service valves, flare fittings, and outdoor unit accessories.

• UAE Stock & Local Inventory: Fast processing and local dispatch across the UAE.

• Technical Support: Expert guidance for line sizing, valve replacement, and system diagnostics.

Frequently Asked Questions (FAQs)

What sizes are available for these AC service valves?

These service valves are available in 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, and 7/8″ outer diameter connection sizes.

What is the purpose of the copper tube extension on these valves?

The extended copper tailpiece allows technicians to braze or sweat field piping directly to the valve without transferring excessive heat to the internal rubber valve stem seals.

Can these valves be used with high-pressure refrigerants like R410A and R32?

Yes, these heavy-duty forged alloy valves are pressure-rated for up to 45 bar (650 psig), making them fully compatible with modern high-pressure refrigerants like R410A and R32.