Submittal Sheet

EDTYW122 © Danfoss 05/08
Data sheet RA 2000
Thermostatic Radiator Valves
Technical
Specifications:
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. Range: 45-86°F (7-30°C)
Valve Features
Comfort Control:
Design and Function:
Control of the space temperature at a
comfortable level is easily accomplished
by adjusting the dial clockwise or counter-
clockwise. The dial has a numbered scale
of 1 to 5 corresponding to temperatures of
approximately 57°F to 79°F (14°C to 26°C).
Should the space be unoccupied for an
extended period, the dial can be set to the “ *
”symbol for freeze protection (50°F or 9°C) to
save energy.
The RA 2000 thermostatic operator consists
of a saturated vapor charged bellows and a
setting dial. The dial is set to the position equal
to the desired temperature. When the ambient
temperature lowers, the pressure from the
bellows will reduce, allowing the valve to open.
A rise of temperature increases the pressure
in the bellows closing the valve. The balanced
pressures between the adjustment spring and
the bellows ensure a smooth and modulating
operation of the valve. Danfoss RA 2000 are
manufactured to the highest quality standards
in an ISO 9001 factory.
Indicated temperatures are approximate.
Adjust the dial to the desired setting.
Indicator Tab
No. Description:
1- Operator setting dial (ABS)
2- Vapor charged bellows
3- Safety spring (steel)
4- Adjustment spring (steel)
5- Locking/limiting pin (steel)
6- Pressure spindle (plastic)
7- Snap-on mounting ring (plastic)
8- Valve body (nickel plated brass)
9- Union nut (nickel plated brass)
10- Tailpiece (nickel plated brass)
11- Valve disc (EPDM)
12- Valve spindle (brass)
13- Valve spring (stainless steel)
14- Back seat washer (EPDM)
15- Valve bonnet (brass)
16- Pressure pin (stainless steel)
17- Packing o-ring (EPDM)
18- Packing gland (DRZ brass)
2