Valve bodies with pressfit connection and self-sealing tailpiece. Type RA-N for two pipe systems

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1 Valve bodies with pressfit connection and self-sealing tailpiece. Type RA-N for two pipe systems EN 215 Application Straight Angle Horizontal angle The valve bodies with pressfit connection are used for heating systems with stainlass steel or copper pipes. The fitting require a commercial compression tool. List of available tools is found on page 2. The valve bodies are physically and technically identical to RA-N, DN15 standard valves. All RA 2000 thermostatic sensors, as well as the new RAX design series, may be used as desired. The RA-N valve bodies with integrated presetting are used in two-pipe pumped heating systems. Flow is adjustable in the range m 3 /h. RA-N valve bodies are supplied with a red protective cap 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. Technical data are according to Euronorm EN 215. The valve bodies are equipped with a self sealing tailpiece featuring an O-ring seal. Valve bodies are manufactured from DZR 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 seal 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. Ordering and data Type Code no. Design RA-N 15 3) 013G G G3239 Angle Straight Horiz. angle Connection Settings, k v values with RA 2000 sensor, m 3 /h 1) mal actuator With ther- Inlet Outlet Xp N N(k vs ) Pressfit R½ Xp= Xp= ) The kv-value indicates the water flow (Q) in m 3 /h at a pressure drop ( p) across the valve of 1 bar; k v = Q: p. The k vs -value states the flow Q at a maximum lift, i.e. at fully open valve at setting N. At setting N the k v -value is stated according to EN 215, at Xp = 2K i.e. the valve is closed at 2 C higher room temperature. At lower settings the Xp value is reduced to 0.5 K of the setting value 1. 2) The maximum differential pressure specified is the maximum pressure at which the valves give satisfactory regulation. As with any device which imposes a pressure drop in the system, noise may occur under certain flow/pressure conditions. To ensure quiet operation, maximum pressure drop should not exceed bar. The differential pressure can be reduced by the use of a Danfoss differential pressure regulator. Accessories Product Code no. Gland seal, may be exchanged with system in operation. O-Ring (5pcs.) 013G G4149 Approvals Danfoss Pressfit valves are tested and approved according to EN 215 (CEN). Pipes compatible with Danfoss pressfit valves are according to EN (welded stainless steel pipes ), EN (Thin-walled carbon steel pipes), EN 1057 (seemless copper pipes) with a minimum wall thickness of 1 mm. The O-rings used in the Danfoss pressfit valves bodies are according to EN 681. DKCD VDUZL402 Danfoss 02/2009 1

2 Presetting Presetting area Reference mark The calculated setting value can be set easily and accurately without using special tools: remove the protective cap or sensor. raise the setting ring. turn the scale on the setting ring until the desired value faces the reference mark, orientated towards the valve outlet. release the setting ring. Factory setting = N. N the valve is completely open. A setting in the shaded area must be avoided. When the sensor is mounted, the presetting is hidden and thus protected against unauthorized alteration. The presetting can be chosen from values between 1 and 7 with intervals of 0.5. At setting Press system Pipes Copper and stainless stell pipes which complies to EN 1057 or EN Steel pipes Outer diametre and pipe weight according to EN 10312, Table 2 for serie 2 steelpipes. Danfoss recommends a pipe weight of min. 1 mm. Carbon steel pipes Tubes in unalloyed steel E195(W.nr ) and E235(W.nr ) according to EN or EN in condition +A or +N. Copper pipes Outer diametre and wall thickness according to EN 1057, Table 3. Danfoss recommends a minimal wall thickness of 1 mm. Pipe hardness min. R 290, meaning that only copper pipes in bars are compatible. No internal reinforcement is required. Compatibility The pressable area of Danfoss Pressfit valves are designed to match a range of commercial press tools and jaws as described in the table. For tools not mentined please check the with the manufacturer. Compatible press tools Press tools and jaws must be used and serviced as described by their manufacturer, and the actual press operation must be inspected. Danfoss require a minimal press force of 30 kn. The actual pressing must not be interrupted and the tool should be locked for removal until the pressing has been completed correctly. The testing of the press points is done according to the manufactures specs. Compatible press tools Geberit Mapress: PWH 75, EFP2, ECO1/ACO1, EFP3, AFP3, ACO 3 REMS: Power-Press E, Power-Press 2000, Power- Press (ACC), Akku-Press (ACC) Rothenberger: ROMAX Pressliner, ROMAX Pressliner ECO, ROMAX AC ECO SANHA: ECO201, ACO201, ACO3, ECO301 Viega: PT3-EH, PT3-AH, Picco, Typ 2 Novopress: AFP 101 RIDGID: CT-400, 320-E Klauke: UAP2, UNP2, UP2EL-14 Compatible press jaws Mapress Geberit: Press jaws15 mm (90532) REMS: V15 (570115), M15 (570110), SA15 (570935) Rothenberger: SV 15 mm (1.5212X), M 15 mm (1.5102X) SANHA: Standard, 15 mm ( , ) Viega: PT2 15mm (Modell , Typ ) Novopress: M 15 RIDGID: ProPress 15 mm (16958) Klauke: KSP3 M15 mm, KSP4 V15 mm With system under pressure all pressfit connections should be inspected. Even if no leakage is seen the connection should be checked. 2 VDUZL402 Danfoss 02/2009 DKCD

3 Fitting DKCD VDUZL402 Danfoss 02/2009 3

4 Capacity Capacities in combination with RA 2000 sensor at P band between 0.5 K and 2K. The P band is the change in room temperature which is required to move the valve from closed position to the position which allows the calculated flow. Sizing example: Required heat: 0.7 kw Cooling across radiator: 20 C. Flow through radiator: Q = x 1.16 = 0.03 m 3 /h = 30 liter/h Pressure drop across valve: p = 1 mwg. Valve setting: 2.5 Alternatively the setting can be read directly in the table "Data and ordering": k v = Q (m 3 /h) p (bar) 4 VDUZL402 Danfoss 02/2009 DKCD

5 Design Materials in contact with water Valve body and other metal parts K v -limiter O-Ring Valve cone Pressure pin and valve spring Nozzle Ms 58, DZR brass PPS EPDM NBR Chrome steel PP The valve bodies are nickle-plated on the outside. 1. Gland seal 2. O-Ring 3. Pressure pin 4. Seal 5. Regulation spring 6. Setting dial 7. Valve body 8. Union nut 9. Nipple 10. Pressfit connection The radiator thermostats consist of the thermostatic elements of the RA 2000/RAX series and the valve body. The element and the valve body are ordered separately. Dimensions 57 ISO 7/1 - R1/ SW24 SW SW Dimensions with RA 2990 or RAX thermostatic sensor. DKCD VDUZL402 Danfoss 02/2009 5

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