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Block Valves: Instruction Manual for All Sizes
D
R
A
FT 9/
21
/04
1-3
1.1 Installation
All valves are installed in a vacuum system by brazing welding, Conflat
®
gaskets, or
Klamp-Flange
®
or KF couplings.
KF coupling
Consists of two symmetrical flange fittings (one of which is on the
valve body), a centering ring, an O-ring and a flange clamp
(Figure 1-1).
Figure 1-1
KF Coupling
NW 50 valves
Installed in a vacuum system by means of a Klamp
®
(Quick Clamp)
flange or ISO coupling.
ISO 63 and ISO 80
valves
Installed using an ISO coupling consisting of two symmetrical
flanges, a centering ring, and claw clamps.
To install the valve:
1. Wipe the O-ring clean and grease it very lightly with Dupont Krytox
®
GPL2O7 vacuum
lubricant (Part No. 695400010) before installation.
2. Assemble the KF coupling and tighten the wing nut or ratchet firmly to ensure proper
compression of the O-ring seal.
NOTE
The pneumatic valve uses a 1/8 NPT inlet fitting and requires a
minimum of 80 psig air pressure to operate.
3. Install a filter and lubricator in the air inlet line (pneumatic valve only).
O-ring
Flange Fitting
Flange Clamp
Centering Ring
Flange Fitting
Содержание L6280
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