Danfoss KVC Data sheet

Data sheet

Hot gas bypass regulator
Type KVC

KVC hot gas bypass regulator are used to adapt
compressor capacity to actual evaporator load by
supplying a replacement capacity in form of
hot / cool gas.

It is installed in a bypass line between the high and
low pressure sides of the refrigeration system and
is designed for direct gas injection into the suction
line.

Features • Accurate, adjustable pressure regulation

• Wide capacity and operating range

• Pulsation damping design

• Stainless steel bellows

© Danfoss | DCS (rm) | 2020.10

• Compact angle design for easy installation

• ”Hermetic” brazed construction

• Available with are or ODF solder connections

• May be used in the following EX range: Category
3 (Zone 2)

DKRCC.PD.HE0.A7.22 | 1

Data sheet | Hot gas bypass regulator, type KVC

Approvals

Technical data

Metric conversions:
1 psi = 0.07 bar

5

⁄9 (t

°F - 32) = t

1

1 TR = 3.5 kW

°C

2

Ordering

UL LISTED, le SA7200
EAC

Refrigerants

Regulating range

Maximum working pressure MWP = 406 psig

Maximum test pressure Pe = 450 psig

Medium temperature range -49 – 266 °F

Maximum P-band 29 psi

This product is approved for R290, R454A, R454C,
R455A, R600, R600a, R1234ze(E), R1234yf, R1270
by ignition source assessment in accordance with
standard EN ISO80079-36. Flare connections are

R22, R134a, R290, R404A, R407A, R407C, R407F, R407H, R448A,
R449A, R449B, R450A, R452A, R454A, R454C, R455A, R507A, R513A,
R515B, R516A, R600, R600a, R1234ze(E), R1234yf, R1270

Pe = 3.00 – 87.00 psig

Factory setting = 29 psig

For complete list of approved refrigerants, visit
www.products.danfoss.com and search for
individual code numbers, where refrigerants are
listed as part of technical data.

only approved for A1 and A2L refrigerants.

Rated capacity 1)

= 77 °F

l

[TR]

Type

KVC 12 2.14 1.36 2.02 2.31

KVC 15 4.17 2.65 3.93 4.50

KVC 22 5.35 3.41 5.04 5.78 – –

1

) Rated capacity is based on:
Suction gas temperature ts = 14 °F
Condensing temperature t
Oset ∆p = 10 psi

2

) KVC are delivered without are nuts. Separate are nuts can be supplied:
1⁄2 in code no 011L1103
5⁄8 in code no 011L1167

R22 R134a R404A/R507 R407C [in] [in]

Flare

connection 2)

1

⁄2 034L0141

5

⁄8 034L0142

Code no.

Solder

connection

1

⁄2 034L0143

5

⁄8 034L0147

7

⁄8 034L0144

Code no.

Note:

The connection dimensions chosen must not be
too small, as gas velocities in excess of 130 ft / s at
the inlet of the regulator can result in ow noise.

If the temperature in the discharge gas line is too
high according to the compressor specications, it
is recommanded to install a liquid injection valve in
a bypass from the liquid line to the suction line.

© Danfoss | DCS (rm) | 2020.10

DKRCC.PD.HE0.A7.22 | 2

Data sheet | Hot gas bypass regulator, type KVC

Replacement capacity

Metric conversions:
1 psi = 0.07 bar

5

⁄9 (t

°F - 32) = t

1

1 TR = 3.5 kW
1 in = 25.4 mm

°C

2

Maximum regulator capacity Qe 1)

Type

KVC 12

KVC 15

KVC 22

1

) The capacities are based on: Condensing temperature tl = 77 °F

Oset ∆p

[psi] -50 -40 -25 -10 10 30 50

1.5 – 0.68 0.70 0.71 0.73 0.75 0.77

2.0 – 0.93 0.95 0.97 1.00 1.03 1.05

3.0 – 1.33 1.36 1.39 1.43 1.47 1.51

5.0 – 1.75 1.79 1.83 1.88 1.93 1.98

7.5 – 1.93 1.97 2.01 2.07 2.12 2.18

10.0 – 2.00 2.04 2.08 2.14 2.20 2.26

15.0 – 2.19 2.24 2.28 2.35 2.41 2.48

20.0 – 2.62 2.67 2.72 2.80 2.87 2.94

1.5 – 1.01 1.03 1.06 1.09 1.12 1.15

2.0 – 1.20 1.23 1.25 1.29 1.32 1.35

3.0 – 1.73 1.77 1.80 1.85 1.90 1.95

5.0 – 2.64 2.69 2.75 2.83 2.90 2.98

7.5 – 3.39 3.46 3.54 3.63 3.73 3.83

10.0 – 3.90 3.98 4.06 4.17 4.28 4.39

15.0 – 4.76 4.66 4.75 4.88 5.01 5.14

20.0 – 5.05 5.16 5.27 5.42 5.57 5.72

1.5 – 1.09 1.12 1.14 1.17 1.21 1.24

2.0 – 1.38 1.41 1.44 1.48 1.52 1.56

3.0 – 1.89 1.93 1.97 2.02 2.07 2.12

5.0 – 2.88 2.94 3.00 3.08 3.16 3.24

7.5 – 4.02 4.11 4.19 4.31 4.43 4.54

10.0 – 4.98 5.09 5.20 5.35 5.50 5.64

15.0 – 6.35 6.49 6.63 6.82 7.01 7.20

20.0 – 7.10 7.25 7.40 7.60 7.79 7.99

Regulator capacity Q

1

) [TR] suction gas temperature ts after

e

pressure / temperature reduction [°F]

R22

Correction factors for condensing temperature tl.
When liquid temperature tl is other than 77 °F,
adjust the table capacities by multiplying them
by the appropriate correction factor found in the
following table.

Correction factors for condensing temperature t

tl [°F] 50 59 68 77 86 95 104 113 122

R22 0.9 0.93 0.96 1.00 1.05 1.1 1.13 1.18 1.24

System capacity × correction factor = table capacity

l

© Danfoss | DCS (rm) | 2020.10

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