Low flow presseting valves

RA-U

RA-U valves can be used with all types of thermostatic elements in the Danfoss series and with thermal actuators type TWA. RA-U valves are used in two-pipe heating systems and is available with the following setting ranges for max. water flow: kv = 0.016 - 0.30 m³/h. The valve are supplied with a protective cap which can be used for manual regulation during the construction phase. To be able to distinguish between other valves of the series the protective cap is yellow.

RA-U PURE

RA-UN / RA-UR

All RA-UN/UR valve bodies can be used together with all types of thermostatic elements in the RA 2000 series.
The valve bodies are fitted with a kv limiting device for pre-setting of max. water flow.
RA-UN is for mounting in the flow and RA-UR in the return. An arrow on the valve body indicates the direction of flow.
The valve body RA-UN/RA-UR is used in two-pipe heating systems and is available with the following setting ranges for max. water flow:
• RA-UN kv = 0.02 - 0.48 m³/h
• RA-UR kv = 0.02 - 0.47 m³/h
The valve bodies are supplied with a protective cap and adjusting screw which can be used for manual regulation during the construction phase.The protective cap must not be used as a manual shut off device. A special manual shut off device (code no. 013G5000) should be used. To be able to distinguish between other valve bodies of the RA 2000 series the protective cap is yellow.
Compression fittings for 15 mm, 10 mm or 8 mm copper tube are available for valve body RA-UN/ UR with 3/8" and 1/2" BSP connections.
Valve bodies are manufactured from brass with nickel plating. The pressure pin of the gland seal is of chrominium steel and works in a lifetime lubricated O-ring. The complete gland assembly can be replaced without draining down the system.
Should water treatment be used it is essential that dosing instructions of the manufacturer are strictly observed. It is recommended that formulations containing mineral oil are avoided.