Danfoss GBC, GBCH, GBCT Data sheet

Data Sheet

Shut-o ball valve

Type GBC, GBCH and GBCT

For CO2 application

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

to open and to shut off inner flow path by operating the valve spindle.

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

The valve structure and materials are designed and tested specifically for use with CO2

refrigerant.

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

valves are approved for use in transcritical CO2 systems.

Features:

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

• Sealing material especially for CO 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

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Shut-off 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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<![endif]>GBCT 140 Bar

		AKS 11
			AK-PC 572
CMT
Light	AKS 11
	AKS 11
	Gas cooler	GBCT 140 Bar	AK-SM 8XX
	Gas cooler
			AKS 21A
			MBS 8250

		MT
		FC 103
		AKS 11
		CCMT
	GBCT 140 Bar	Light
	GBCT 140 Bar	MBS 8250
		MBS 8250

<![if ! IE]>

<![endif]>GBCT 140 Bar

	GBC 90 Bar
NRV	AKS
	AKS
	2050

GBC 90 Bar		<![if ! IE]> <![endif]><		NRV
GBC 90 Bar		<![if ! IE]> <![endif]><		NRV
	AKVP	AK-CC55
		AK-CC55	AKS 11
			AKS 11
		Medium temp. load		GBC 90 Bar
		Medium temp. load

DGS

AKS 11

MBS 8250

	<![if ! IE]> <![endif]><		FC 103
	<![if ! IE]> <![endif]><
NRV	AKVP	AKS	AKS 11
	AK-CC55	AKS	AKS 11
		2050

GBC 90 Bar

NRV

	MBS 8250
Low temp. load	GBC 90 Bar
Low temp. load

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)

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Shut-off ball valve, type GBC, GBCH and GBCT

Media

Table 1: Media

Refrigerants	R 744 (CO2)
Refrigerant oil	POE, PAG (PVE, PAO)

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 field 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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Shut-off ball valve, type GBC, GBCH and GBCT

Product specification

Technical data

Table 2: Technical data

Technical data	GBC	GBCH	GBCT
Max. working pressure	45 bar / 650 psig	6s - 28s: 90 bar / 1305 psig	140 bar / 2031 psig
Max. working pressure	45 bar / 650 psig	35s - 42s: 75 bar / 1085 psig	140 bar / 2031 psig
		35s - 42s: 75 bar / 1085 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 flow	Bi flow	Bi flow
Environmental transport/storage		-40 – 65 °C /-40 – 150 °F. Air humidity: RH≤95%.
temperature and humidity		-40 – 65 °C /-40 – 150 °F. Air humidity: RH≤95%.
temperature and humidity

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 certificate.

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

Position	Inscription	Explanation
Box label; Product label	Shut-off ball valve	Product name
Box label	GBC 6s H	Product type
Box label	009L7415	Code number for ordering
Box label	Bi-flow	Flow type
Box label	Straightway	Direction
Box label	R744(CO2)	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
		Code for production place and time
Box label	BE4320B	(BE = Wuqing, week 43, year 2020, weekday B = Tues-
		day)
Box label; Product label	MADE IN CHINA	Manufacturing site acc. to EN standards
Box label	EAN code	Barcode for individual code no. identification accord-
Box label	EAN code	ing to EAN standard
		ing to EAN standard
Product label	-40 °C – 100 °C	Media temperature range
Box label; Product label	Additional information: Relevant approval authority	-
Box label; Product label	logos	-
	logos

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Shut-off ball valve, type GBC, GBCH and GBCT

Figure 4: Marking of GBCT

HP LP

009L6420

PS 2031PSIG/140 BAR TS -40C to 149C

Table 4: Marking of GBCT

Inscription

"HP"

"LP"

Explanation

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.

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

Design and materials

Direct flow gives maximum through-flow 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

12	11	6	10	9	8	7	13
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							4
							2
					5	3
					1

Table 5: Design and materials

Position	Description	Material
1	Connection tube	Copper (Stainless steel for GBCH 28s~42s)
2	Valve body	Brass
3	Ball seat	PTFE
4	Valve tail	Brass
5	Ball	Stainless steel
6	Double O-ring seal in spindle	EPDM Rubber
7	Cap seal	PTFE
8	Seal cap	Brass
9	Spindle	Brass
10	Pin	Stainless steel
11	Guide ring	PTFE
12	Schrader valve	Stainless steel
13	Bleed hole	-

Dimensions

We have chosen to show dimensions of the major versions.

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