Specifications

Model 50 Valve, Continued
Step Procedure
5. Place the valve bottom plate on a lint free cloth. Using a 2.5 mm
Allen wrench, remove the five component socket head fastening
cap screws. Refer to Figure 4-5.
6. Separate valve Top, Center and Bottom plates, placing them on
a lint-free cloth.
Both diaphragms are visible.
The ports are machined for a 1/16” Valco internal nut. The Valco ferrule
or the 2-piece Swagelok ferrule can be used. It is important to follow the
manufacturer’s procedures when cutting tubing and seating ferrules to
ensure that the fitting does not leak.
Valco & Swagelok
Fittings
Use a wheel-cutting tool (Supelco 58692-U) to score the tubing, and then
with a pair of straightening pliers (Supelco 58646) and a pair of needle
nose pliers snap the tubing at the score line. Make certain that all tubing
ends are cut square with the tube axis, and that both the ID and the OD
are thoroughly deburred, use a deburring tool (Supelco 58804). Inspect
the end of the tubing where the ferrule will seat for scratches along its
length. Visible scratches along the tubing where the ferrule will seat are
not acceptable, but those behind the front edge of the ferrule will not
interfere with the integrity of the fitting.
Valco & Swagelok
Assembly Instructions
Step Procedure
1. Slide the nut and ferrule onto the tubing.
2. Insert this assembly in the fitting detail (valve body), screwing
the nut 2 or 3 turns by hand.
3. Push the tubing all the way forward into the details so that it
seats firmly.
4. Manually turn the nut until it is finger tight.
A5E31405710001 4-23