Appion CCT516 5/16 inch core control tool Appion CCT516 5/16 inch core control tool retail packaging Appion CCT516 core control tool installed on an HVAC/R system service port
360° Product View CCT516 in motion.
Rotating 360 degree view of the Appion CCT516 core control tool

Appion HVAC/R Tools

5/16 in. Core Control Tool

Vacuum-rated core depressor tool for 5/16 in. Schrader valve fittings, designed for precise valve core control, low-loss charging, quick diagnostics and gauge isolation.

Available exclusively through your local distributor
SKU CCT516
UPC 818369010987
Fitting Size 5/16 in. Female Flare to 1/4 in. Male Flare
Tool Type Core control / core depressor tool
Working Pressure 5,516 kPa / 800 PSI
Burst Pressure 27,579 kPa / 4000 PSI
Vacuum Rating 20 microns
Primary Use Charging, diagnostics and gauge isolation
Designed For 5/16 in. Schrader valve fittings, high-flow service valves, high-pressure refrigerants including R410A and deep vacuum work
Tool Features Precise valve core depression, low-loss service access, side gauge connection and advanced back seat seal for gauge isolation
Buy From Your Local Distributor Service & Warranty Compatible Parts

Ask for Appion Part #

CCT516

Buying from unauthorised online sellers may affect product support or warranty. For the best experience, purchase through an authorised local distributor.

Find a Distributor

Precise valve core control

Depress the core without losing control of the charge.

The CCT516 gives technicians controlled access to 5/16 in. Schrader valve fittings. It can be used to meter refrigerant while charging, service high-flow valves, connect gauges for quick diagnostics and isolate a vacuum gauge from pressure spikes.

  • Low-loss fitting for precise valve core depression.
  • Vacuum-rated to 20 microns for deep vacuum work.
  • Designed for high-pressure refrigerants including R410A.
  • Useful for charging, high-flow Schrader valve service and quick system diagnostics.
  • Advanced back seat seal helps isolate gauges and protect vacuum gauges from pressure spikes.

Key performance specs

Fitting Size 5/16 in. FFL to 1/4 in. MFL
Working Pressure 5,516 kPa / 800 PSI
Burst Pressure 27,579 kPa / 4000 PSI
Vacuum Rating 20 microns
Connection Type 5/16 in. FFL to 1/4 in. MFL
Tool Type Core control tool

*Specifications based on the Appion CCT516 product information and Core Control Tool brochure.

Charging and diagnostics

Connect a gauge without adding unnecessary hose volume.

The CCT516 is useful when charging an A/C system or quickly checking system pressure. It allows a digital stub gauge or service gauge to be connected close to the access port, helping reduce unnecessary refrigerant loss and hose volume.

Gauge Use Quick diagnostics
Charging Use Meter refrigerant flow

Gauge protection

Back seat seal for gauge isolation.

The back seat seal helps isolate gauges from sudden pressure changes, making the tool a practical layer of protection when using vacuum gauges or digital pressure tools during service work.

Seal Feature Back seat seal
Vacuum Use Rated to 20 microns

Compatible parts & related products

Linked CCT516 parts from Omni Tools.

Click any compatible repair kit, replacement part or closely related product below to open its product page.
Valve Core Removal Tool and Core Control Tool Maintenance Kit View Part 1/4 in. Core Control Tool View Product 5/16 in. Valve Core Removal Tool View Product 1/4 in. Valve Core Removal Tool View Product MegaSeal Low-Loss Charging T-Fitting 1/4 in. FL View Product MegaSeal 4 in. 45º Vacuum-Rated Connector - 1/4 in. to 1/4 in. View Product 1/4 in. Speed-Y View Product

Useful information & technical bulletins

Official Appion resources for the CCT516.

CCT516 product information and relevant Appion technical/safety resources. PDF cards show only the document title and Open PDF.

Useful information

Core Control Tool Brochure Open PDF CCT Repair Parts and Kits Open Resource Appion Product Resources Open Resource

Technical & safety bulletins

Preventing Damage to Hose Gaskets and Seals Open PDF Protecting Gauges from High Pressure Surges Open PDF Safely Handling AC/R Tools Open PDF

Ready to source the CCT516?

Find your nearest authorised distributor.

Omni Tools supports Appion products across Australia through local distributors, service information and warranty pathways.

Find a Distributor Contact Omni Tools