RA-N Valve Bodies with Pressfit Connection and Self-Sealing Tailpiece for Two Pipe Systems

Transcription

1 Data Sheet RA-N Valve Bodies with Pressfit Connection and Self-Sealing Tailpiece for Two Pipe Systems Application Straight Angle The valve bodies with pressfit connection are used for heating systems with stainless steel or copper pipes. The fitting require a commercial compression tool. List of available tools is found on page 3. Horizontal angle Technical data are according to Euronorm EN 215. The valve bodies are equipped with a self sealing tailpiece featuring an O-ring seal. 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. 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. The RA-N valve bodies with integrated presetting are used in two-pipe pumped heating systems. Flow is adjustable in the range m³/h. 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. 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. Data and Ordering Type Design Connection Inlet Outlet Angle RA-N 15 Danfoss Heating Solutions Straight Horiz. angle Pressfit R½ With thermal actuator Code no. N(kvs) 013G3237 Xp= G3238 Xp= G3239 Settings, kv-values with RA 2000 sensor, m³/h 1) Xp VDUZL Danfoss / N 1

2 1) The k v -value indicates the water flow (Q) in m³/h at a pressure drop ( p) across the valve of 1 bar;. 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 X p = 2K i.e. the valve is closed at 2 C higher room temperature. At lower settings the X p -value is reduced to 0.5 K of the setting value 1 Accessories Product Code no. Gland seal, may be exchanged with system in operation O-Ring (5pcs.) 013G G4149 Approvals Danfoss RA-N pressfit valves are tested and approved according to EN 215. The O-rings used in the Danfoss pressfit valves bodies are according to EN 681. 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. Presetting 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 The presetting can be chosen from values between 1 and 7 with intervals of 0.5. At setting N the valve is completely open. A setting in the shaded area must be avoided. 1 When the sensor is mounted, the presetting is hidden and thus protected against unauthorized alteration. 1. Presetting area 2. Reference mark 2 Press System Pipes Copper and stainless stell pipes which complies to EN 1057 or EN Outer diametre and pipe weight according to EN 10312, Table 2 for serie 2 steelpipes. Danfoss recommends a pipe weight of min. 1 mm. Steel pipes 2 VDUZL502 Danfoss 02/2011 Danfoss Heating Solutions

3 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. 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. Compatible press tools Danfoss Heating Solutions VDUZL502 Danfoss 02/2011 3

4 Fitting VDUZL502 Danfoss 02/2011 Danfoss Heating Solutions

5 Capacity RA-N 15 - 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. Alternatively the setting can be read directly in the table "Data and Ordering": Sizing example Required heat: Cooling across radiator: Flow through radiator: Pressure drop across valve: 0.7 kw 20 C p = 1 mwg Valve setting: 2.5 Design 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 10 Danfoss Heating Solutions VDUZL502 Danfoss 02/2011 5

6 Materials in contact with water Valve body and other metal parts K v -limiter O-Ring Valve cone Ms 58, DZR brass PPS EPDM NBR Pressure pin and valve spring Nozzle Chrome steel PP 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. The valve bodies are nickle-plated on the outside. Dimensions ISO 7/1 - R1/ SW SW Dimensions with RA 2990 or RAX thermostatic sensor. 6 VDUZL502 Danfoss 02/2011 Danfoss Heating Solutions

7 Danfoss Heating Solutions VDUZL502 Danfoss 02/2011 7

8 Danfoss A/S Heating Solutions Haarupvaenget Silkeborg Denmark Phone: Fax: Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved. 8 VDUZL502 Danfoss 02/2011 Danfoss Heating Solutions