Danfoss GBC Ball Valve - 45 bar for CO2 Applications Installation Guide
Summary
This comprehensive guide details the professional installation and use of the Danfoss shut-off ball valve, designed specifically for R744 refrigerant (CO₂) and various non-flammable gases. It provides authorized technicians with step-by-step instructions covering component removal, precise torquing guidelines, brazing techniques, and proper Schrader valve setup across multiple GBC sizes (6s to 42s). Ideal for HVAC and refrigeration professionals requiring reliable service in challenging temperature ranges (-40°C to 150°C) while maintaining optimal system integrity.
Page 1 Text Content
Installation guide
Shut-off ball valve for R744 (45 bar/650 psi) Type GBC 6s to GBC 42s Refrigerant: R744 (CO2) Max. working pressure (PS/MWP):
th is
45 bar/650 psi
Temperature range: -40 – 150 °C / -40 – 300 °F
an fo ss 9G 9.
Applicable to all common non-flammable refrigerants, excluding R717 and to noncorrosive gases/liquids dependent on sealing material compatibility.
th is
th is
The design pressure shall not be less than the value outlined in Section 9.2 of ANSI/ ASHRAE 15 for the refrigerant used in the system. Warning: Only authorized persons are allowed to operate this valve, as closing can cause build-up of excessive pressure in the system.
Component to be insulated
Danfoss 9G219.10
Remove access cap (if present)
th is
th is
Danfoss 9G230.10
Single-flow
Opening valve Max. Torque
Valve size
Nm ft-lbs
Attention! Do nut remov nut D
Attention! Do nut remov nut Attention! Do nut remov
nut CLOSED position
OPEN position
Attention! Do nut remov nut Attention! Do nut remov
Danfoss Danfoss 9G227.10 9G228.10
DKRCC.PI.FB0.C3.02 © Danfoss A/S (AC-MCI / sw), 2016-05
Page Summary Contents For Danfoss GBC Ball Valve - 45 bar for CO2 Applications Installation Guide
Manual Details
| Brand | Danfoss |
|---|---|
| Pages | 2 |
| File Size | 800.04 KB |
| Published | June 05, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What refrigerants can the valve handle?
It is applicable to all common non-flammable refrigerants, excluding R717 and R744.
What are the pressure limits for this valve (R744 used)?
The max working pressure (MWP) listed for R744 is 245 bar/650 psi.
Is specialized training required to operate this valve?
Yes; only authorized persons are allowed to operate this valve, as closing can build up excessive pressure.
What torque specifications must be used when capping the Schrader valve?
The torque should be set at 0.3 Nm / 0.2 ft-lbs with the component Danfoss 9G224.10.