MOLSTIC-S™ OPERATION AND MAINTENANCE MANUAL
© 2004-2007 DH Instruments, a Fluke Company
Page
24
2.4.3
INLET CONNECTION - MOLSTIC-S USE WITH DUT
DOWNSTREAM
Connect the Gas Supply:
Connect the gas supply to the inlet fitting of the molstic-S
using suitable means and compatible fittings. Following instructions in Section 2.4.1.
2.4.4
OUTLET CONNECTION - MOLBLOC-S OUTLET
CONNECTION
The outlet fitting of the molbloc-S utilizes the ISO-KF Style vacuum flange. Use the following
procedure for connecting and disconnecting molbloc-S elements with ISO-KF Style connections.
1.
Flange, ISO-KF style, 16 mm
Figure 19.
molbloc-S with ISO-KF Style Flange
2.5
CONNECTING, DISCONNECTING AND MOUNTING
MOLBLOC-S
™
WITH ISO-KF STYLE VACUUM FLANGE
(MOLBLOC-S OUTLET FITTING)
2.5.1
ISO-KF STYLE VACUUM FLANGE FITTINGS
The outlet connection system on the molbloc-S body is the ISO-KF style vacuum flange. It
utilizes an internal centering ring, an external overpressure ring and clamp. The seal is
effected by the uniform application of pressure by the clamp on the 15° surface of the mating
stainless steel flanges. These mating flange surfaces compress a Viton O-ring that is held in
place by the centering ring. The overpressure ring keeps the O-ring in place, and maintains a
leak free connection when the system is subjected to internal pressures above vacuum level.
This connection is reusable, rotatable, and can operate leak free in vacuum applications up to
10
-8
Torr, and in positive pressures of 700 kPa (100 psig).
When performing a leak test of a plumbing system that contains the ISO-KF Style
Vacuum Flanges, do not exceed the maximum operating pressure of the molbox:
600 kPaa (87 psia) for molbox1-A700K, 250 kPaa (36 psia) for molbox1-A350K models.
