Owner's manual

VALVE CONSTRUCTION
The standard check valve body (1) is constructed of
ductile iron. The discs (2) are bronze and the
remaining metal components are type 316 stainless
steel. The discs and torsion spring (3) are the only
moving parts and require no maintenance or
lubrication. The general details of construction are
illustrated in Figure 3 and identified in Table 2.
ITEM DESCRIPTION MATERIAL
1 Body Cast Iron w/ Buna-N seat
2 Disc Bronze
3 Spring* T316 Stainless Steel
4 Hinge Pin T316 Stainless Steel
5 Stop Pin T316 Stainless Steel
6 Bearing* T316 Stainless Steel
7 Hinge Pin Ret.* T316 Stainless Steel
8 Stop Pin Ret.* T316 Stainless Steel
9 Stab. Sphere* Buna-N
10 Spacer* HDPE
*Recommended Spare Part
The body is of the compact wafer style to fit between
two pipe flanges. The resilient seat is bonded to the
body and is not adjustable or replaceable in the field.
WARNING: Removal of mating flanges
without draining the pipeline may
cause injury or damage to the
valve.
TABLE 2. CHECK VALVE PARTS LIST
FIGURE 3. DUAL DISC
â
CHECK VALVE COMPONENTS
3