self-sealing tailpiece for two pipe systems ra-n valve...

Application

Straight Angle Horizontal angle

The valve bodies with pressfit connection areused for heating systems with stainless steel orcopper pipes. The fitting require a commercialcompression tool. List of available tools is foundon page 3.

The valve bodies are physically and technicallyidentical to RA-N, DN15 standard valves. All RA2000 thermostatic sensors, as well as the newRAX design series, may be used as desired.

The RA-N valve bodies with integrated presettingare used in two-pipe pumped heating systems.Flow is adjustable in the range 0.04 - 0.73 m³/h.

RA-N valve bodies are supplied with a redprotective cap which can be used for manualregulation during the construction phase.

The protective cap must not be used as a manualshut off device. A special manual shut off device(code no. 013G5000) should be used.

Technical data are according to Euronorm EN215.

The valve bodies are equipped with a self sealingtailpiece featuring an O-ring seal.

Valve bodies are manufactured from DZR brasswith nickel plating. The pressure pin of the glandseal is of chrominium steel and works in a lifetimelubricated O-ring. The complete gland seal canbe replaced without draining down the system.

Should water treatment be used it is essentialthat dosing instructions of the manufacturer arestrictly observed. It is recommended thatformulations containing mineral oil are avoided.

Data and Ordering

Type DesignConnection Settings, kv-values with RA 2000 sensor, m³/h 1)

Withthermalactuator

Code no.

Inlet Outlet Xp 1 2 3 4 5 6 7 N N(kvs) 013G3237

RA-N15

Angle

Press-fit

R½

Xp=1 0.04 0.09 0.15 0.22 0.28 0.33 0.36 0.43 0.90 013G3238

StraightXp=2 0.04 0.09 0.16 0.25 0.36 0.43 0.52 0.73 0.90 013G3239Horiz.

angle

Data Sheet

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

Danfoss Heating Solutions VDUZL502 © Danfoss 02/2011 1

1) The kv-value indicates the water flow (Q) in m³/h at a pressure drop (∆p) across the valve of 1 bar;

. The kvs-value states the flow Q at a maximum lift, i.e. at fully open valve at setting N. At setting

N the kv-value is stated according to EN 215, at Xp = 2K i.e. the valve is closed at 2 °C higher roomtemperature. At lower settings the Xp-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 013G0290

O-Ring (5pcs.) 013G4149

Approvals Danfoss RA-N pressfit valves are tested andapproved according to EN 215.

Pipes compatible with Danfoss pressfit valves areaccording to EN 10312 (welded stainless steelpipes ), EN 10305-3 (Thin-walled carbon steelpipes), EN 1057 (seemless copper pipes) with aminimum wall thickness of 1 mm.

The O-rings used in the Danfoss pressfit valvesbodies are according to EN 681.

Presetting The calculated setting value can be set easily andaccurately 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 valuesbetween 1 and 7 with intervals of 0.5. At setting Nthe valve is completely open. A setting in theshaded area must be avoided.

When the sensor is mounted, the presetting ishidden and thus protected against unauthorizedalteration.

1. Presetting area2. Reference mark

1

2

Press System PipesCopper and stainless stell pipes which compliesto EN 1057 or EN 10312.

Steel pipes

Outer diametre and pipe weight according to EN10312, Table 2 for serie 2 steelpipes. Danfossrecommends a pipe weight of min. 1 mm.

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

2 VDUZL502 © Danfoss 02/2011 Danfoss Heating Solutions

Carbon steel pipesTubes in unalloyed steel E195(W.nr.1.0034) andE235(W.nr.1.0308) according to EN10305-2 or EN10305-3 in condition +A or +N.

Copper pipesOuter diametre and wall thickness according toEN 1057, Table 3. Danfoss recommends aminimal wall thickness of 1 mm.Pipe hardness min. R 290, meaning that onlycopper pipes in bars are compatible. No internalreinforcement is required.

CompatibilityThe pressable area of Danfoss Pressfit valves aredesigned to match a range of commercial presstools and jaws as described in the table. For toolsnot mentined please check the with themanufacturer.

Compatible press toolsPress tools and jaws must be used and servicedas described by their manufacturer, and theactual press operation must be inspected.Danfoss require a minimal press force of 30 kN.

The actual pressing must not be interrupted andthe tool should be locked for removal until thepressing has been completed correctly.The testing of the press points is done accordingto 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, ROMAXPressliner 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 (1692015,

1695815)▪ Viega: PT2 15mm (Modell 2299.9, Typ 461

898)▪ Novopress: M 15▪ RIDGID: ProPress 15 mm (16958)▪ Klauke: KSP3 M15 mm, KSP4 V15 mm

With system under pressure all pressfitconnections should be inspected.Even if no leakage is seen the connection shouldbe checked.



Fitting

1. 2. 3.

4. 5.

6. 7. 8.

9. 10. 11.



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 temperaturewhich is required to move the valve from closedposition to the position which allows thecalculated flow.

Sizing exampleRequired heat: 0.7 kWCooling across radiator: 20° CFlowthroughradiator:Pressure drop acrossvalve:

∆p = 1 mwg

Valve setting: 2.5

Alternatively the setting can be read directly inthe table "Data and Ordering":

Design 1 32 4 5 6 7 8 9

10

1. Gland seal2. O-Ring3. Pressure pin4. Seal5. Regulation spring6. Setting dial7. Valve body8. Union nut9. Nipple

10. Pressfit connection



Materials in contact with waterValve body and other metalparts

Ms 58, DZR brass

Kv-limiter PPS

O-Ring EPDMValve cone NBR

Pressure pin and valve spring Chrome steel

Nozzle PP

The radiator thermostats consist of thethermostatic elements of the RA 2000/RAX seriesand the valve body. The element and the valvebody are ordered separately.

The valve bodies are nickle-plated on the outside.

Dimensions

109

28 29

57

41

SW 24

ISO 7/1 - R1/2”

96

15

SW24

58

42

72

Dimensions with RA 2990 or RAX thermostatic sensor.




Danfoss A/SHeating SolutionsHaarupvaenget 118600 SilkeborgDenmarkPhone:+45 7488 8000Fax: +45 7488 8100Email: [email protected]

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 productsalready 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 respectivecompanies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.


mailto://[email protected]

http://www.heating.danfoss.com

self-sealing tailpiece for two pipe systems ra-n valve...

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