dhi recommendations for molbloc installation Manual Do Utilizador
molbloc, molbloc-S and molbox are trademarks, registered and otherwise, of DH Instruments, Inc.
Swagelok is a registered trademark of the Swagelok Company.
Viton is a registered trademarks of DuPont deNemours Company.
Document 560050a
030502
DH Instruments, Inc.
4765 East Beautiful Lane
Phoenix AZ 85044-5318
USA
Tel 602.431.9100
Fax 602.431.9559
dhi@dhinstruments.com
www.dhinstruments.com
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 kPa (87 psia) for
molbox A700k models or 250 kPa (36 psia) for
molbox A350K models!
system that contains the ISO-KF Style Vacuum
Flanges, do not exceed the maximum operating
pressure of the molbox: 600 kPa (87 psia) for
molbox A700k models or 250 kPa (36 psia) for
molbox A350K models!
Making and Breaking Procedure for molbloc-S
ISO-KF Vacuum Flange Connection
ISO-KF Vacuum Flange Connection
Place the overpressure ring past one of the
ISO-KF flanges to be mated.
Place the centering ring into the groove of the
ISO-KF flange on the outlet of the molbloc-S.
Align the mating flange against molbloc’s ISO-KF
flange, and close the gap by hand.
Hold the flanges together and move the
overpressure ring directly over the mated flanges.
Place the clamp around the mated flanges.
Swing the clamp closed. If necessary loosen the
thumbscrew to allow the thrust washer and wing nut
to fall into position on top of the clamp. Fully tighten
the wing nut by hand.
thumbscrew to allow the thrust washer and wing nut
to fall into position on top of the clamp. Fully tighten
the wing nut by hand.
To break the fitting, hold the molbloc-S with your
hand and loosen the wing nut until the clamp can
be separated. Remove the clamp, centering ring,
and overpressure ring.
be separated. Remove the clamp, centering ring,
and overpressure ring.
Never use wrenches to hold the molbloc-S body,
or to tighten the clamp.
or to tighten the clamp.
ACCESSORIES INCLUDED WITH MOLBLOC-S
SHIPMENT
One of the following accessory kits is included in the
molbloc-S shipment:
molbloc-S shipment:
P/N 401953
molbloc-S, Sizes 1E2 and Smaller
DESCRIPTION
QTY
PART NO.
1/4 in. VCR Face Seal O-Ring
2
102070
16 mm ISO-KF Centering Ring
1
101544
16 mm ISO-KF Over-Pressure Ring
1
103240
16 mm ISO-KF Clamp
1
102975
16 mm ISO-KF Blanking Cap
1
103238
P/N 401954
molbloc-S, Sizes 2E2 through 2E3
DESCRIPTION
QTY
PART NO.
1/2 in. VCR Face Seal O-Ring
2
102912
16 mm ISO-KF Centering Ring
1
101544
16 mm ISO-KF Over-Pressure Ring
1
103240
16 mm ISO-KF Clamp
1
102975
16 mm ISO-KF Blanking Cap
1
103238
P/N 401984
molbloc-S, Sizes 5E3 and 1E4
DESCRIPTION
QTY
PART NO.
Adaptor, 25mm ISO-KF x 1 in NPT M
1
103307
25 mm ISO-KF Centering Ring
1
101542
25 mm ISO-KF Over-Pressure Ring
1
103241
25 mm ISO-KF Clamp
1
102121
40 mm ISO-KF Nipple, 4.8 in. long
1
103308
40 mm ISO-KF Centering Ring
2
103245
40 mm ISO-KF Over-Pressure Ring
2
103309
40 mm ISO-KF Clamp
2
103246
40 mm ISO-KF Blanking Cap
1
103310