Danfoss RA2000 Design guide
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Submittal RA2000 for 2-Pipe Valve Assembly
Job Name Job Location
Engineer Approval
Contractor Approval
Representative Contractor P.O. No.
Application
RA 2000 Thermostatic Radiator Valves regulate
the flow of hot water or low pressure steam
through free-standing radiators, baseboards, or
convectors in hot water and two-pipe steam
systems. Operators and valves are packaged
separately to allow an installer an ability to select
a suitable combination for each application.
Features
• Replaceable packing assembly while system is
in operation
• Non-electric thermostatic radiator valve
conforms to ASHREA/ANSI standard 102-1983
• Same valve body can be used for both hot
water or low pressure steam applications
• Patented vapor charged bellows for quick
response from valve mounted operators
• “Snap-action” mechanism for standard valve
mounted operators for ease of installation and
removal without the use of tools
• Available version of tamper resistant operators
Operational Capabilities
Adjustable Temp. Range
Max. Sensor Temperature
45-86°F (7-30°C)
140°F (°60C)
Hot Water Systems
Max. Temperature
250°F (°121C)
Max. Static Pressure 145 psi
Max. Test Pressure 232 psi
Max. Diff. Pressure (water) 15 psi
Two Pipe Low Pressure Steam Systems
Max. Temperature
250°F (°121C)
Max. Test Pressure 232 psig
Max. Steam Pressure 15 psig
RA2000 Valve Bodies
◊
Cv value in GPM at pressure drop of 1 psi
Code No.
013G8015 ½” NPT 1.6
013G8020 ¾” NPT 2.7
013G8025 1” NPT 2.8
013G8032
013G8014 ½” NPT 1.6
013G8019 ¾” NPT 2.7
013G8024 1” NPT 2.8
013G8031
013G8013 ½” NPT 1.6
013G8018 ¾” NPT 2.7
013G8023 1” NPT 2.8
013G8030
013G8042 ½” solder 1.6
013G8044
RA2000 Operators
Code No. Sensor Capillary Qnty
013G8250 Built-in -
013G8252 Remote 6’
013G8240
013G2922
013G8562 6’
013G8565 16’
013G8568
013G8564 Wall mount remote 6’ + 6’
Tamper resistant,
built-in
Tamper resistant,
Remote
Wall mount remote
Valve
Type
Straight
Angle
Side
Mount
Angle
Straight
Connection
1-¼” NP
1-¼” NP
1-¼” NP
¾” solder 2.7
-
6’
26’
Cv
2.8
2.8
2.8
Qnty
◊
013G5002 Manual handle -
Specification
The thermostatic radiator valve assembly shall be
selected to maintain room temperature within ±1°F.
The operator shall be of a bellows design with a vapor
or liquid charge and shall be connected to the valve
via a snap-on fast mounting system or secured by an
Allen screw. The thermostatic operator shall be
capable of temperature adjustment between 45° and
86°F (7 and 30°C) and be locked and limited by the
use of limiting pins or internal mechanism.
The valve shall be of nickel plated brass
construction with a fully replaceable packing gland
capable of replacement while the system is in
operation. The valve disc shall be constructed of
EPDM, capable of withstanding 250°F (121°C).
The thermostatic radiator valve shall be Danfoss or
an approved equal.
Construction
5
8 9 10
7 6
1. Operator ABS plastic
2. Bellows Vapor charged
3. Mounting base Plastic
4. Valve body Nickel plated brass
5. Union nut/Tail piece Nickel plated brass
6. Valve disc EPDM
7. Valve spindle Brass
8. Pressure pin Stainless Steel
9. Packing O-ring EPDM
10. Packing gland DRZ brass
1 2 3 4
Temperature settings
The numbers reflected on the
dial (1-5) correlate to available
temperature positions. The
lowest setting (*) provides
frost protection and maintains
the room temperature at
approximately 45°F.
Mounting of Operator
013G8250 & 013G8252
Snap on attachment
Rotation of the base
retracts teeth allowing the
operator to be pushed and
mounted onto the valve
013G8240 & 013G2922
Allen key requirement
Firmly seat the operator to
the valve then tighten
operator with an Allen key
Wall mounted versions
Allen key requirement
Firmly seat the remote
operator to the valve then
tighten remote operator
with an Allen key
Operator Orientation
The valve mounted built-in
thermostatic operator
(013G8250) should not be
installed in a vertical
orientation. The result will
cause the operator to close
prematurely. The operator should be installed in a
horizontal position allowing proper air flow across the
sensing element. If the operator is unable to be
reoriented, a different thermostatic operator should
be selected with a remote sensor.
Limiting and Locking Operator Setting
All RA2000 operators have the ability to limit or lock
the temperature range or setting. For built-in style
operators pins are inserted on the back of the
operator, while wall mounted versions require the
face plate to be removed and tabs located on the dial
to be set.
Theft protection
To prevent the removal of standard built-in operators
(013G8250 and 013G8252) from the valve an optional
anti-theft protection clip is inserted at the base of the
operator.
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