8.4 DETENT MECHANISM ON
MODEL 7060
If mounting Model 7060 on an actuator, the
detent mechanism must be disabled (refer to
Figure 5):
a) Remove the detent pin and centering
ring.
b) Push the detent pin into the holes in the
centering ring and the shaft.
c) Center the pin, making each end project
equally from the ring OD.
d) Rotate the body while pushing the detent
body in place to allow the detent pin to fall
into the two notches in the detent wheel.
e) Rotate the body while holding the detent
body in place to allow the mounting holes to
line up with the threaded mounting holes in
the valve body.
9.0 OPERATING SUGGESTIONS
9.1 USE OF AQUEOUS BUFFERS OR
SALT SOLUTIONS
To prevent the formation of salt crystals in
the valve, flush out the flow passages with
water after using salt solutions.
9.2 USE OF HIGH pH SOLUTIONS
The standard rotor seal is Vespel
1
, which
has exceptionally good wear resistance.
However, Vespel is susceptible to alkaline
attack, deteriorating rapidly when used with
solutions of pH over 10. PEEK and
Tefzel
1
rotor seals are available for alkaline
applications.
9.3 ACCURACY OF SAMPLE LOOPS
Sample loop sizes are not actual values. The
actual volume can differ by ± 10% for a 20
µL loop and ±5% for a 10 mL loop. There is
a greater difference for smaller loops.
Detent Housing
Ball (2)
Spring (2)
Detent Wheel
Centering Ring
Detent Pin
Stator Screws (3)
Knob
Shaft Assembly
Stator Pins (2)
Stator
Set Scre
ws (3)
Stator Ring
Stop Pins (2)
Rotor Seal
Isolation Seal
Bear
ing Ring
Rotor Pin
Spr
ing W
ashers
(4)
Thr
ust Bear
ing
Body
Shaft
* Shaft Assembly includes Shaft,
Rotor, and Pins.
*
Stop Pins
Rotor Pin
Notch
Model
7060
Model
7030
Models
7010, 7000 & 7040
Shaft End
Fig. 6. Correct rotor seal orientation (viewed from stator).
Fig. 4. Exploded view of Type 70 valves.
Handle
Assembly
Page 3 of 4
2320666B
6/02
Fig. 5. Detent mechanism on Model 7060.
Rheodyne LLC • A Unit of IDEX Corporation • 600 Park Court, Rohnert Park, CA 94928 • (707) 588-2000 • Fax (707) 588-2020
www.rheodyne.com
