Danfoss GBC, GBCH, GBCT Data sheet

Data Sheet

Shut-off ball valve
Type GBC, GBCH and GBCT

For CO2 application

Danfoss shut-o ball valves, type
GBC,GBCH,GBCT are manually operated shut-
o valves for CO2 refrigeration systems, in order

to open and to shut o inner ow path by
operating the valve spindle.

The valves are specically designed for intrinsic
standstill security, meaning that the valves can
withstand pressures normally arising when the
refrigeration system is shut o, i.e. during
serving or during unexpected power failure.

The valve structure and materials are designed
and tested specically for use with CO

refrigerant.

GBC and GBCH valves are designed to use in
subcritical CO2 refrigeration systems. GBCT

valves are approved for use in transcritical CO
systems.

Features:

• Bleed hole design to prevent liquid
entrapment when the valve is closed

• Sealing material especially for CO₂ to ensure
long term product reliability

• Customized brass material ensures consistent
performance under aggressive environment

• GBCH 28s~42s with stainless-steel butt
welding connections, suitable for systems
with stainless-steel piping

• GBCT with reinforced copper-iron tube
extensions to allow easy torch-brazing
installation

• UL/cUL Listed, complies with Pressure
Equipment Directive 2014/68/ EU

2

2

AI270047618978en-000601

MT

AK-PC 572

AK-SM 8XX

MBS 8250

MBS 8250

MBS 8250

MBS 8250

GBC 90 Bar

GBC 90 Bar

GBC 90 Bar

GBCT 140 Bar

GBC 90 Bar

GBC 90 Bar

AK- PC 572

®

AKVP

Gas cooler

Medium temp. load

Low temp. load

GBCT 140 Bar

GBCT 140 Bar

GBCT 140 Bar

NRV

NRV

NRV

NRV

LP

HP

009L6420

PS 20319SIG/140 BAR

TS -40 – 149 0C

ECO

0F
0C

<

<

<

<

SET

i

AKS 11

AKS 21A

AKS 11

AKS 11

AK-CC55

AKS 11

FC 103

AKS 11

AKS
2050

AKS
2050

AK-CC55

FC 103

AKVP

AKS 11

LT

CCMT
Light

MADE IN DENMARK

MADE IN DENMARK

CCMT
Light

DGS

ECO

0F
0C

<

<

<

<

SET

i

HP High Pressure (120-140 bar)

HP Receiver Pressure (60-90 bar)

LP Suction Pressure MT (35-55 bar)

LP Suction Pressure LT (25-30 bar)

Shut-o ball valve, type GBC, GBCH and GBCT

Applications

Typical applications for CO2 ball valves are:

• Display cases

• Supermarket stores

• Food Retail

• Industrial refrigeration

• Heat pump

Danfoss CO2 ball valves are designed for the following refrigerant cycles:

• GBC with PS = 45 bar, copper connections equipped, for subcritical systems

• GBCH with PS = 90/75 bar, copper/ stainless steel connections equipped, for subcritical systems

• GBCT with PS = 140 bar, reinforced copper connections (K65) equipped, for transcritical systems

Figure 1: Application

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Refrigerants

R 744 (CO2)

Refrigerant oil

POE, PAG (PVE, PAO)

Shut-o ball valve, type GBC, GBCH and GBCT

Media

Table 1: Media

 NOTE:

For the application use with R744 as part of a secondary loop or cascade:

1.

The design pressure of the refrigerant containing component is not less than the design pressure of the
associated components.

2.

The component is not provided with any pressure relief or pressure regulating relief valve and that a sucient
number of valves having capacity deemed adequate shall be eld installed on the refrigeration system.

3.

When the refrigeration system is de-energized, venting of R744 may occur through the pressure regulating relief
valves, and may need to be recharged, but the valve should not be defeated or bypassed.

4.

A sucient number of pressure relief and pressure regulating valves may need to be provided based upon
system capacity and located such that no stop valve is provided between the relief valve and the parts or section
of the system being protected.

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Technical data

GBC

GBCH

GBCT

Max. working pressure

45 bar / 650 psig

6s - 28s: 90 bar / 1305 psig

35s - 42s: 75 bar / 1085 psig

140 bar / 2031 psig

Media temperature range

-40 °C – 100 °C / -40 °F – 212 °F

-40 °C – 100 °C / -40 °F – 212 °F

-40 °C – 149 °C / -40 °F – 300 °F

Flow direction

Single ow

Bi ow

Bi ow

Environmental transport/storage

temperature and humidity

-40 – 65 °C /-40 – 150 °F. Air humidity: RH≤95%.

Position

Inscription

Explanation

Box label; Product label

Shut-o

ball valve

Product name

Box label

GBC 6s H

Product type

Box label

009L7415

Code number for ordering

Box label

Bi-ow

Flow type

Box label

Straightway

Direction

Box label

R744(CO

2

)

Refrigerant

Box label

1/4 in ODF

Connection size and type

Box label

PS 90 bar/MWP 1305 psig

Max. working pressure in bar and psig

Box label

BE4320B

Code for production place and time
(BE = Wuqing, week 43, year 2020, weekday B = Tues­day)

Box label; Product label

MADE IN CHINA

Manufacturing site acc. to EN standards

Box label

EAN code

Barcode for individual code no.

identication accord-

ing to EAN standard

Product label

-40 °C – 100 °C

Media temperature range

Box label; Product label

Additional information: Relevant approval authority
logos

-

Shut-o ball valve, type GBC, GBCH and GBCT

Product specication

Technical data

Table 2: Technical data

CAUTION:



Danfoss recommends that GBCT valves are installed so that the HP side is oriented towards the highest
pressure side of the system when the valve is in the closed position.

GBCT CAUTION - RISK OF HIGH PRESSURE

Do not close with CO2 liquid temperature below ambient. This component shall be installed along with a pressure
relief valve set to discharge at no higher than the rated pressure of this component. This component is intended for
systems in which the critical pressure of the refrigerant will be exceeded. The relief valve shall comply with the
requirements of ASME Section VIII, be marked “UV” and sized based on the refrigeration system capacity.

An orange Hanging tag is added on all valves as per requirement of UL certicate.

Identication

Relevant product data is available on the product and box label. An example of a box label and product label are
shown, including an explanation of the content.

Figure 2: Box label Figure 3: Product label

Table 3: Product and label text

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009L6420

PS 2031PSIG/140 BAR

TS -40C to 149C

HP LP

Inscription

Explanation

"HP"

Indicates where the bleed hole of ball is located and Danfoss recommends the HP
side is oriented towards the highest pressure side of system when valve is in
closed position.

"LP"

Indicates the side without bleed hole and shall be oriented towards to the low
pressure side of system when valve is in closed position.

Danfoss

9L75002

13

7

9 8

10

611

12

1

5

3

2

4

Position

Description

Material

1

Connection tube

Copper (Stainless steel for GBCH 28s~42s)

2

Valve body

Brass3Ball seat

PTFE4Valve tail

Brass5Ball

Stainless steel

6

Double O-ring seal in spindle

EPDM Rubber

7

Cap seal

PTFE8Seal cap

Brass9Spindle

Brass10Pin

Stainless steel

11

Guide ring

PTFE12Schrader valve

Stainless steel

13

Bleed hole

-

Shut-o ball valve, type GBC, GBCH and GBCT

Figure 4: Marking of GBCT

Table 4: Marking of GBCT

Design and materials

Direct ow gives maximum through-ow with minimum pressure drop across valve. The combination of laser­welded valve body (2) and valve tail (4), ball seat/seal (3), double O-ring seal in spindle (6), and cap seal (7) provides
the best tightness.

Figure 5: Design and materials

Table 5: Design and materials

Dimensions

We have chosen to show dimensions of the major versions.

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