Brochure

6
Becker RPDA Rotary Piston Double Acting Actuator Cylinder Components
Item Description Material
1 Hex Nut Steel
2 Cylinder Tie-Rod High Strength Steel
3 Piston Head (top) Steel
4 Tube Seal (top) Buna-N O-Ring
5 Piston U-Cup Seal (top) Buna-N
6 Rod Clevis Pin Stress Proof Steel
7 Piston Wear Strip Reinforeced Teflon
®
8 Piston Nodular Iron
9 Piston Rod Hard Chrome Plated Steel
10 Tube Steel (bottom) Buna-n O-RIng
11 Piston Head (bottom Steel
12 Piston Rod Seal Polyurethane
13 Piston Rod Bearing Duralon
®
14 Gland Plate Steel
15 Gland Plate Screws (SHCS) Alloy Steel
16 Piston Tube Alloy Steel
Teflon is a registered trademark of Dupont Company
Duralon is a registered trademark of Rexnord, Inc.
Table 2 - Components & Materials for construction of RPDA
Rotary Piston Double Acting Actuator Cylinder
Figure 5.1
Mount #1 - Left Hand (Standard)
with clean sweep feature
Actuator located on left hand
side of valve when looking in
directionof flow (actuator
vertical/valve stem horizontal).
Figure 5.2
Mount #2 - Right Hand
Actuator located on right hand
side of valve when looking in
direction of flow (actuator
verticle/valve stem horizontal).
Figure 5.3
Mount #3 - Vertical Stem
(Actuator Downstream)
Actuator located on down-
streamside of valve when look-
ing in direction of flow (actuator
horizontal/valve stem vertical).
Figure 5.4
Mount #4 - Vertical Stem
(Actuator Upstream)
Actuator located on up-stream
side of valve when looking in
direction of flow (actuator
horizontal/valve stem vertical).
1
2
3
4
5
7
6
8
9
10
11
15
15
14
13
12
5
RPDA Actuators Standard Mounting Configurations
FLOW
FLOW
FLOW
FLOW
Figure 4 - RPDA Rotary Piston Double Acting Actuator Cylinder
Exploded View