Submittal Sheet

ManualsBrandsDanfoss ManualsHeating SuppliesThermostatic Rad Valve w/ Vac Breaker (1 Pipe Steam)

Table Of Contents

Design &

Function

Ÿ Danfoss' RA 2000 1PS one-pipe steam thermostatic radiator valve provides accurate

temperature control and quite operation.

Ÿ The movement of air across the thermostatic operator effects the modulation control in

regulating the venting of air from the radiator or convector.

Ÿ Based on the set temperature on the operator, the 1PS regulates the amount of steam allowed

into the emitter by controlling the amount of air allowed to vent out.

Ÿ The venting action occurs during each system (boiler) on-cycle only when heat is required. Air

will re-enter the system during the boiler off-cycle via a patened “across the seat” vacuum

breaker. This eliminates condensate buildup and allows natural system aspiration to take

place.

Ÿ The RA 2000 1PS assembly is specifically designed for low pressure steam systems. The

system pressure should not be constant preventing air to get back into the system.

Ÿ Thermostatic radiator valve assembly- valve, thermostatic operator and air vent- can be used

for free standing radiators, convectors, and enclosed radiators. 1PS is not recommended for

copper fin tube radiators.

Part Material

1. Valve Nickel plated brass

2. Valve Disc EPDM

3. Spindle guide Phosphor bronze

4. Spring Stainless steel

5. Back seat washer EPDM

6. Valve spindle Brass

7. Pressure pin Stainless steel

8. Clamping band Al. alloy

9. Allenscrew Steel

10. Socket Zytel Nylon

11. Bellows Phosphor bronze

12. Handle

ABS

13. Adjustment spring

Steel

14. Safety spring

Steel

15. Pressure spindle

Polyamide No. 6

16. Air vent

17. Retainer

Brass

18. Packing gland

Capillary Tube

Steel

RA 2000 1PS

Thermostatic Radiator Valve

For Use on One-Pipe Low-Pressure

Steam Systems

Data sheet

Dimensions