Series NKS-C, NKSP-C, NKL-C, NKLP-C Page 2
9520-072-en Revision 02
TM 8436 Edition 01/2012
List of Contents
List of Contents ........................................2
Relevant documents.................................3
1Technical data......................................3
1.1 Overview of sizes........................................4
1.2 Type codes..................................................4
1.3 Name plate, CE and body markings ...........5
1.4 Tightening torques....................................... 6
1.5 Dimensions - Installation ............................. 8
1.6 Flow rate value kv [m³/h]............................8
1.6.1 Disc/stem unit PFA-lined .................................8
1.6.2 Disc/stem unit stainless steel, Hastelloy, Titan.9
1.7 Weights (ca. kg) .........................................9
1.8 Breakaway torques.................................... 10
1.9 Cavitation coefficient z for 75% duty.........10
1.10 Pressure-temperature-diagram ................. 10
2Notes on safety..................................11
2.1 Intended use..............................................11
2.2 For the customer / operator.......................11
2.3 Improper operation....................................11
3Safety notes for applications in
potentially explosive areas based on
the Directive 94/9/ EC (Atex 95)........12
3.1 Intended use..............................................12
4Safety note for valves, certified to
Clean Air Act (TA-Luft)......................13
5Transport, storage and disposal......13
5.1 Storage ...................................................... 13
5.2 Transport preparations..............................13
5.3 Return consignments ................................13
5.4 Transport securing device.........................13
5.5 D i s p o s a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4
6Installation..........................................14
6.1 Installation possibilities..............................14
6.2 Flange caps and gaskets ..........................14
6.3 Direction of flow and installation position.14
6.4 Installation ................................................. 14
6.4.1 Additional advice for shut-off and control
butterfly valve with actuator...........................14
6.5 Earthing ..................................................... 14
7Operation............................................ 15
7.1 Initial commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5
7.2 Improper operation and their consequences.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5
7.3 Shutdown ...... ..... ..... ..... .............................. 15
7.3.1 Additional advice for shut-off and control
butterfly valve with actuator...........................15
8Malfunctions ...................................... 16
9Maintenance....................................... 16
9.1 Notes for assembly....................................16
9.2 Valve actuation..........................................17
9.2.1 Actuated with lever........................................17
9.2.2 Actuated by means of worm gear..................17
9.2.3 Remotely actuated ........................................17
9.2.4 Required breakaway torque...........................17
9.3 Tests ..........................................................17
10 Drawings ............................................ 18
10.1 Legend ................... ....................... ............. 18
10.2 Sectional drawing NKS-C.........................18
10.3 Sectional drawing NKL-C...........................19
10.4 Worm gear.................................................19
10.5 A c t u a t o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0
10.6 Connection actuator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0
10.7 Dimensional drawing NKS-C with hand
lever ...........................................................21
10.8 Dimensional drawing NKS-C with worm gear
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2
10.9 Dimensional drawing NKSP-C...................23
10.10 Dimensional drawing NKL-C with hand
lever ...........................................................25
10.11 Dimensional drawing NKL-C with worm
g e a r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6
10.12 Dimensional drawing NKLP-C ..............27
