Mikrotherm. Manual radiator valves. To be precise.

Transcription

1 Manual radiator valves To be precise.

2 Description HEIMEIER Mikrotherm manual radiator valves made of corrosion-resistant gunmetal, with white plastic hand wheel cap, tight-packed with protection film. Lengths according to DIN 84 part. Accurate presetting of the mass flow and finest heat apportioning through a non-rising double spindle with a Mikrotherm presetting cone with tandem sealing (metal and O-ring sealing). Spindle for NW to NW with double O-ring sealing. Spindle sealing for NW and NW through stuffing box packaging which can be tightened. Can be retrofitted as a thermostatic valve by replacing the Mikrotherm insert with a thermostatic insert. Can be connected to a threaded pipe, or with compression fittings to a copper, precision steel or multi-layerpipe. For HEIMEIER Mikrotherm, only use the auxiliary, labelled HEIMEIER compression fittings (label e. g. THE). Assembly Mikrotherm Double O-ring sealing Double spindle Tandem sealing Presetting cone Body made of corrosion-resistant gunmetal nickel plated Double O-ring sealing (NW NW ) Presetting through a non-rising double spindle Can be retrofitted as a thermostatic valve

3 Application The HEIMEIER Mikrotherm manual radiator valve is used in warm water pump heating systems, gravity or low pressure steam systems. With models in angle and straight form from NW to NW, Sample application the manual radiator valve can be used for a number of different purposes. The non-rising double spindle with the Mikrotherm presetting cone makes hydraulic balancing through presetting Mikrotherm possible. The aim here is to provide e. g. all heat consumers with hot water according to their needs. Note The contents of the heat transfer medium should comply with VDI guideline on damage and scale deposit formation in warm water heating systems. For industrial and long-distance energy systems, see the applicable codes VdTÜV 466 and AGFW /. Mineral oils in the heat transfer medium or lubricants containing mineral oils of any type lead to strong swelling and in most cases cause EP seals to fail. When using nitrite-free frost and corrosion resistance solutions with an ethylene glycol base, pay close attention to the details outlined in the manufacturers documentation, particularly details concerning concentration and specific additives. Operation Article numbers Presetting. Close the valve.. Unscrew the hand wheel fastening screw.. Screw in the control pin with a screw driver by turning it clockwise until it stops. 4. Use the diagrams to determine the presetting and preset by turning to the left.. Insert the hand wheel fastening screw and screw tight. Notes: The insert should only be loosened or tightened when the valve is opened. After the first test heating with NW and NW, check the stuffing box union nut and tighten if necessary. Structure NW k vs value Gunmetal nickel-pl.. [m/h] Art. no. Angle Straight (/ 8 ) (/ ) (/ 4 ) ( ) (/ 4 ) (/ 8 ) (/ ) (/ 4 ) ( ) (/ 4 ) Permitted operating temperature TB C (48 F). Permitted operating pressure PB bar, low pressure steam C ( F)/ 0. bar.

4 Accessories Illustration Description L [mm] NW Ø pipe Art. no. L Compression fitting For copper or precision steel pipe female thread connection Rp / 8 Rp / 4. For a pipe thickness of 0.8 mm, support sleeves should be used. Note the information provided by the manufacturer. Support sleeve For copper or precision steel pipes with a wall thickness of mm. Compression fitting For multi-layer pipes. Female thread connection Rp /. Conversion insert for valve bodies with a T label. Series to 98. Valve Nickel-plated brass (/ 8 ) -. (/ ) -. (/ 8 ) -. (/ ) -. (/ ) 4-4. (/ ) -. (/ ) 6-6. (/ 4 ) 8-8. (/ 4 ) -. 8, 0-.70, , , , , Nickel-plated brass 4 x x -6. (/ 8 ), (/ ) (/ 4 ) ( ) (/ 4 ) Conversion insert for valve bodies with a connector thread for the thermostatic head. Series from 98. (/ 8 ), -0.0 (/ ) (/ 4 ) Standard. Conversion insert for valve bodies with a boss marking. Series from 994. (/ 8 ), (/ ) Numerical cap Numerical cap Presetting (V-exakt). Conversion insert for valve bodies with a boss marking. Brass numerical cap. Series from 994. Finest presetting (F-exakt). Conversion insert for valve bodies with a boss marking. Nickel-plated brass numerical cap. Series from 994. (/ 8 ), -0.0 (/ ) (/ 8 ), (/ ) mm = 0,094 inch 4

5 Technical data Diagram NW (/ 8 ) (angle) (straight) 0-0 / 0-0 /æ-value Œ 0,06 0, æ,7,4 0,8 0, 0,6 0,4 æ, , 0, 0, 0, Druckverlust Δp [mm WS] Diagram NW (/ ) (angle) (straight) 0-0 / 0-0 /æ-value Œ 0,06 0,, 0, 0,4 0,74 0,4 æ,6,7 æ, , 0, 0, 0, Pressure loss Δp [mm WS]

6 Technical data Diagram NW (/ 4 ) (angle) (staight) 0-0 / 0-0 /æ-value Œ 0,064 0, 0, 0,, 0,4,,98 0 æ, æ, , 0, 0, 0, Pressure loss Δp [mm WS] Diagram NW ( ) (angle) (straight) 0-04 / 0-04 /æ-value Œ 0,46 0,77,7,,4,8, 4,4 æ 6, æ 6, , 0, 0, 0, Pressure loss Δp [mm WS] 6

7 Technical data Diagram NW (/ 4 ) (angle) (straight) 0-0 / 0-0 /æ-value Œ 0,7 0,79 7,9 6,6,,4,,8 0 æ 8,9 æ, , 0, 0, 0, Pressure loss Δp [mm WS] Sample calculation Target: Preset value Given: Heat flow º = W Temperature spread Δt = K (70/ C) Pressure loss in manual valve NW Δp v = mbar Solution: Mass flow ª = º = = 9 kg/h c. Δt.6. Screw driver turns form diagram NW, page = 6. turns Formula: C v = k v 0,86 k v =C v 0,86 7

8 Dimensional data sheet Lengths according to DIN 84, part Angle form Straight form Ø D Ø D H SW H SW SW l d d D d d α α b SW D l 6 l l 4 b l l l 6 NW D b d d I I I I 4 I I 6 α Spanner opening H D.. min. SW SW R p / 8. G / 8 R / R p /. G / 4 R / R p / 4 4. G R / R p G / 4 R R p / 4 G / R / mm = 0,094 inch Brochure 4. Printed on chlorine-free bleached paper / We reserve the right to make technical changes. Theodor Heimeier Metallwerk GmbH Postfach 4, 99 Erwitte, Germany Phone Fax