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EDTYW122 © Danfoss 05/08

Data sheet RA 2000

Thermostatic Radiator Valves

Valve Features:

Operator Features:

Valve mounted operators provide fast •

acting modulating control of the space

temperature through a patented vapor

charge, ensuring the highest level of

comfort control.

Standard valve mounted operators are

•

equipped with a “snap-action” mechanism

that allows for easy installation and removal

without the use of tools. Optional anti-theft

protection clips are available.

Tamper resistant versions of the valve

•

mounted operators are available to

discourage unauthorized adjustment,

vandalism and theft.

Conforms to ASHRAE / ANSI Standard •

102-1983.

RA 2000 valves are ﬁtted with a packing

•

gland assembly that is replaceable while the

system is in operation. The packing gland is

ﬁtted with a grease cup to ensure the o-ring

packing is lubricated for life.

Sturdy EPDM rubber valve disc provides a •

positive seal against the valve seat at

diﬀerential pressures of up to 15 PSI in hot

water heating systems, while 15psig for low

pressure steam systems.

Plastic cap supplied to protect the valve •

pushpin can provide manual control of

the valve during installation. If manual

operation is required, a separate hand knob

is available as an accessory.

Valves remain normally open with no •

operator mounted.

Conforms to ASHRAE / ANSI Standard•

102-1983.

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 to select a

suitable combination for each application.

Standard Valve Mounted

Dial and Sensor

Tamper Resist. Valve

Mounted. Dial and Sensor

Combined Remote

Mounted Dial and Sensor

Standard Valve Mounted

Dial with Remote Sensor

Tamper Resist. Valve

Mounted Dial w/ Remote

Sensor

Separate Remote

Mounted Dial and Sensor

Angle FPT x MPT

Union Tailpiece

Straight Double

Solder Union

Side Mount Angle

FPT x MPT

Union Tailpiece

Straight FPT x MPT

Union Tailpiece

Summary of content (8 pages)

PAGE 1
Data sheet RA 2000 Thermostatic Radiator Valves 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 Operator Features: Standard Valve Mounted Dial and Sensor Tamper Resist. Valve Mounted. Dial and Sensor Combined Remote Mounted Dial and Sensor Standard Valve Mounted Dial with Remote Sensor Tamper Resist.
PAGE 2
Data sheet Technical Specifications: RA 2000 Thermostatic Radiator Valves Hydronic Hot Water Systems Two-Pipe Low-Pressure Steam Systems Maximum Temperature: 250 °F Maximum Temperature: 250 °F Maximum Static Pressure: 145 psi Maximum Test Pressure: 232 psig Maximum Test Pressure: 232 psi Maximum Steam Pressure: 15 psig Max. Diff. Pressure (water): 15 psi Max. Sensor Temperature: 140 °F Max. Sensor Temperature: 140 °F Adjustable Temp. Range: 45-86°F (7-30°C) Adjustable Temp.
PAGE 3
Data sheet RA 2000 Thermostatic Radiator Valves Applications: Typical Installation Configuration = Free-Standing Radiators The freestanding hot water or low-pressure steam radiator is located where air circulation is unobstructed and passes freely over the operator. Free-Standing Radiators Freestanding hot water or low-pressure steam radiator. Air circulation does not pass freely over the operator due to furniture, drapes, coverings, etc.
PAGE 4
Data sheet RA 2000 Thermostatic Radiator Valves RA 2000 Operators Ordering Information: Operator Code No.
PAGE 5
Data sheet RA 2000 Thermostatic Radiator Valves Dimensions: Valve Type Straight Angle Side Mount Double Solder Connection Type L1 L2 L3 L4 L5 H1 H2 1/2” NPT 2-5/8” 3-3/4” 1-57/64” 3-3/4” 3/4” NPT 2-29/32” 4-3/16” 2-1/16” 3-15/16” 1” NPT 3-17/32” 4-31/32 2-1/16” 3-15/16” 1-1/4” NPT 4-1/4” 5-29/32” 2-9/64” 4-1/64” 1/2” NPT 1-3/16” 2-9/32” 1-1/64” 1-57/64” 3-3/4” 3/4” NPT 1-11/32” 2-5/8” 1-9/64” 2-1/16” 3-15/16” 1” NPT 1-9/16” 3” 1-11/32” 2-1/16” 3-15/16” 1
PAGE 6
Data sheet RA 2000 Thermostatic Radiator Valves Capacity: Note: For best control, select valve based on 4°F P-deviation and maximum 5 psi pressure drop. P-deviation is the difference between the thermostat setting and the actual space temperature. For best comfort control and long life, valves should be selected to provide design flow at a 4°F P-deviation. Hydronic Hot Water Applications Example: Flow Required: 0.65 US GPM Pipe Size: 1⁄2” Solution: Draw a line from 0.
PAGE 7
Data sheet RA 2000 Thermostatic Radiator Valves Spare Parts and Accessories: Code No. Description RA 2000 Valve Mount Operators 013G1236 Screwdriver tool set 013G1246 Limitation pins for RA 8250/52 (10 pcs) 013G1237 Limitation pins for tamper resistant operators RA 8240 / 2922 (30 pcs) 013G8250 013G8252 013G8240 013G2922 013G5245 Anti-theft protection clips for RA 8250/52 (20 pcs) 013G1232 Locking screw plugs for tamper resistant operators RA 8240 / 2922 (10 pcs).
PAGE 8
Data sheet RA 2000 Thermostatic Radiator Valves Warning: Brass products such as Danfoss thermostatic radiator valves should not be installed in hydronic or steam heating systems that are being treated with medias that contain, or that during the process of treatment could develop, agents aggressive to brass. In concentrations larger than shown, agents such as Ammonia (0.2mg/l), Mercury (0.01mg/l), Oxygen (0.01mg/l), Carbon Dioxide (0.05mg/l), or Chloride (20mg/l) must be avoided.