Val-Matic Cam-Centric Plug Valve - Manual (Page 3)

3
VALVE CONSTRUCTION
The standard Cam-Centric ® Plug Valve is constructed
of rugged cast iron with a welded nickel seat and
permanently lubricated bearings. See the specific
Materials List submitted for the order if other than
standard cast iron construction. The details of
construction are illustrated in Figure 3.
The body (1) is available with flanged or mechanical
joint ends for connection to the pipeline. The valve is
designed to be serviced in-line by removing the cast
cover (2). The quarter-turn plug (3) is guided by sleeve
bearings (6) located in the cover and lower boss in the
body. Grit-Guard seals (21) are located at the bottom
of the bearings (6) to prevent abrasive material from
wearing the bearing. Leak-tight closure is made when
the rubber-coated plug (3) is rotated into the nickel
seat on the “SEAT END” of the body.
TABLE 1. STANDARD PLUG VALVE PARTS LIST
FIGURE 3. STANDARD PLUG VALVE CONSTRUCTION
ITEM DESCRIPTION
MATERIAL
1
Body Cast Iron with Overlay
Welded Nickel Seat
2 Cover Cast Iron
3 Plug* Cast Iron with
Resilient Facing
6 Bearings* 316 Stainless Steel
7 V-Type Packing* Buna-N
8 Cover Seal* Buna-N
15 Cover Bolt Alloy Steel, Gr 5
18 Packing Follower Cast Iron
19 Follower Bolt Alloy Steel, Gr. 5
21 Grit-Guard* Buna-N
22 Thrust Bearing* Teflon
23 Thrust Bearing* 316 Stainless Steel
24 Key Carbon Steel
29 Shims 304 Stainless Steel
*RECOMMENDED SPARE PART