Danfoss RA15/6TB, RA15/6T Data sheet

Data Sheet

RA 2000 Series
RA 15/6T & TB
Conversion Valve

Applications:

The RA 15/6T and TB is a special
conversion valve that allows a single
connection point-at the side of the
radiator- to serve as both the supply &
return for a hot water based system. An
example of its application is the
transformation of a 1-pipe steam system
into a hot water based system.

There are two versions to this valve:

RA15/ 6T

Internal bypass allowing for series piping
to the radiators/baseboards. This series
piping provides continuous ow but the
supply water temperature will decrease.

RA15/ 6TB

A conventional two-pipe system where
each radiator/baseboard is supplied. A
traditional supply and return manifold
can be utilized.

With the installation of the RA 15/6T and
TB valves any RA2000 thermostatic
operator or TWA electronic actuator can
be mounted, providing individual
temperature regulation and controlled
comfort for the room.

Features:

• Compact design

• Minimized installation area

• Thermostatic operator or electric
actuator control of valve

• Single entry valve connection to
radiator

• Valve assembly for 1-pipe steam
conversion to hot water

• Alternative method of piping for n
tube or baseboard addition

Converted 1-pipe

steam radiator

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Fin tube baseboard,

system extension

Alternative piping for baseboard application, piped

as a conventional 2-pipe system

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Data Sheet RA 2000 Series RA 15/6T & TB Conversion Valve

Applications (Cont.):

Manifold

Fin tube baseboard

Radiator

Thermostatic

RA 15/6T piped to a manifold for

individual distribution

Operators

24Vac,
Electric
Actuator

24Vac, Electric
Actuator

Thermostatic

Operator

Ordering Information:

Alternative piping for baseboard

application piped as a diverter system

Valve

Code No.

Size

Model

013G3270

RA15/6T

013G326 8

013G3215

1

Cv = Cv bypass + Cv radiator. Max ow through radiator, approx. 35%.

2

1/2

Rp

int. thread are straight thread, non-NPT thread.

3

3/4

G

ext. threading require ttings.

1/2”

RA15/6TB

Cv

2.34

1.17

Connection

1/2

Rp

3/4

G

ext. thread

1/2

Rp

int. thread

int. thread

1

2

3

2

2

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Data Sheet RA 2000 SERIES RA 15/6T & TB Conversion Valve

Fittings & Spare Parts:

Fittings

Spare Parts

Code No.

013 G4116

013U0476

013U8608

013U 0496

Code No.

013G 0290

013G1350

Description

1/2” Copper compression tting for RA 15/6T & TB, 2 pcs

required, use with 013G3215 & 013G3270 only

1/2” M. NPT tailpiece for RA 15/6T, 2 pcs required, use with

013G3268 only

1/2” F. solder tailpiece for RA 15/6T, 2 pcs required,

use with 013G3268 only

1/2” Union nut for RA 15/6T, 2 pcs required, use with

013G3268 only

Description

Packing gland

Angle Adaptor

RA2000 Thermostatic
Operator:

Operator

Code No.

013G 8250

013G 8252

013G 8240

013G2922

013G 8562

013G 8562

013G 8562

013G 8564

Description

Standard valve mounted

dial and sensor

Standard valve mounted

dial with remote sensor

Tamper resistance valve

mounted dial and sensor

Tamper resistant valve

mounted dial with remote

sensor

Combined remote

mounted dial and sensor

Seperate remote mounted

dial and sensor

Sensor Capillary

Built-in

Remote

Built-in

Remote

Built-in

Remote

-

6’

-

6’

6’

16’

26’

6’ + 6’

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Data Sheet RA 2000 Series RA 15/6T & TB Conversion Valve

Electronic Thermo­wax Actuators:

Specications:

Design and Function:

Actuator

Suitable applications

Max. working pressure

Max. dierential pressure

Max. test pressure

Max. ow temperature

Connection

Code No.

088H3110

088 H3111

088H3114

082 F1091

TWA-A actuator 24VAC, 2VA
c/w valve position indicator

ABNM actuator 24VAC,

1.5VA requires control signal

The RA 15/6T and TB valves are a unique
design assembly that oer control of
radiators or n tube baseboard through
a thermostatic operator or electronic

1/2

actuator control. The

” connection to
the radiator allows supply hot water to
enter and through the same connection
allows return water to leave. This
circulation through the radiator is
achieved through the 8” straight ow
tube which is inserted into the radiator.
The ow tube receives the return water,
while hot water is delivered through the
radiator connection. If the length of the
radiator is long, the ow tube can be

1/4

extended by soldering on a

” copper
tube to the end of the ow tube. The
extension to the ow tube results in a
pressure drop of 0.02 FOH/in. The
extension will allow cooler water furthest
from the connection to leave the
radiator and be replaced by hot water.

Typ e

1) 1-pipe steam conversion to hot water systems

2) Hot water n tube or baseboard applications

RA 15/6T

1/2

int. thread

Rp

3/4

G

ext. thread

Operation Actuator Position

NC

ON/OFF

Proportional

(0 -10VDC)

145 psi (10 bar)

8.7 psi (0.6 bar)

232 psi (16 bar)

248 º F (120 º C)

1

2

Rp

NO

NC, w/ end switch

NC

RA 15/6T B

1/2

int. thread

1

The valve body is also an ideal alternative
in the conversion of a one pipe steam
system into a hot water system. In
considering the conversion valve for a
1-pipe steam system, verify that across
the top of the radiator are push nipples.

The push nipples located at the top of
the radiator provides circulation for hot
water within the radiator. Unfortunately,
if the radiator lacks push nipples at the
top, the eectiveness of the conversion
valve is greatly reduced.

Prior to installation of the conversion
valve, the potential 1-pipe steam radiator
should be pressure tested to ensure it
will be capable of handling the increased
pressure from a hot water system. In
addition the radiator should also be
ushed to remove any debris from within
that could potentially clog the valve or
other components within the system.

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Data Sheet RA 2000 SERIES RA 15/6T & TB Conversion Valve

Design and Function
(Cont.):

Construction:

RA 15/6T B

1- Pressure pin
2- O-ring gland seal
3- Valve cone
4- Valve body
5- Flow tube

RA 15/6T

Materials in contact with water

Pipe supporting bushing
O-ring
Valve cone
Pressure pin
Lock washer
Valve body and other
metal parts

PP
EPDM
NBR rubber
Chrome steel
Tin alloy
Ms 58 brass

Dimensions inches
(mm):

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Data Sheet RA 2000 Series RA 15/6T & TB Conversion Valve

Typical Specication:

The valve shall be nickel plated and
capable of delivering supply hot water
and receiving return water through a
single connection to the radiator. An
incorporated ow tube shall receive the
return from the radiator and be capable
of extending its length. The valve shall
be used on a closed loop water based
system and have the option of a bypass
function. The mountable control for the
valve shall have the option of either a

non-electric thermostatic operator or a
24V electric actuator. The thermostatic
operator shall be available in either a
valve or wall mounted dial operator. The
valve mounted dial shall be a vapor
charged operator and installed via
snap-action mechanism or Allen key.
The brass valve body shall have a
packing gland assembly capable of
replacement while the system is in
operation.

Danfoss can accept no responsibility for possible errors in printed materials and reserves the right to alter its products without notice. All trademarks
in this material are property of the respective companies. Danfoss and Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Danfoss Inc.

Toronto, ON
Toll Free: 866-375-HVAC (4822)
Tel.: [phone], Fax: [phone]
www.na.heating.danfoss.com

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VDTQZ222 © Danfoss 03/14

Danfoss Inc.

Baltimore, MD
Toll Free: 866-375-HVAC (4822)
Tel.: [phone], Fax: [phone]
www.na.heating.danfoss.com