Brochure

2-Way Ball Valves, Screwed (1/2 to 2 in.) with TAC DuraDrive™ Actuators
56
© Copyright 2006 TAC. All Rights Reserved. F-27414-1
Using Pipe Reducers with Two-Way Ball Valve Assemblies
The following table provides estimated effective C
v
’s when using pipe reducers with two-way ball valve assemblies.
Caution: It is strongly recommended that the valve size not be reduced to less than one-half the line size. Installing a valve that
is less than one-half the line size can cause flow disturbances that may result in stress failure at the pipe reduction area.
TABLE 3. Estimated Effective C
v
when Using Pipe Reducers with Two-Way Ball Valve Assemblies.
Valve
Size
(in.)
P Code C
v
Estimated Effective C
v
(k
vs
)
Pipe Size
- inches (NPT)
1/2 3/4 1 1
-1/4 1-1/2 2 2-1/2 3 4
1/2
20 1.0 1.0 (0.9) 1.0 (0.9) 1.0 (0.9) — — — — — —
22 2.0 2.0 (1.7) 2.0 (1.7) 1.9 (1.6) — — — — — —
24 4.0 4.0 (3.5) 3.8 (3.3) 3.6 (3.1) — — — — — —
26 15.0 15.0 (13.0) 8.9 (7.7) 7.1 (6.1) — — — — — —
3/4
44 30.0 — 30.0 (26.0) 22 (19.0) 17.0 (14.7) 16 (13.8) — — — —
46 51.0 — 51.0 (44.1) 27.0 (23.4) 20.0 (17.3) 17.0 (14.7) — — — —
1
54 43.0 — — 43.0 (37.2) 36.0 (31.1) 31.0 (26.8) 26.0 (22.5) — — —
56 68.0 — — 68.0 (58.8) 48.0 (41.5) 37.0 (32.0) 29.0 (25.1) — — —
1
-1/4 64 48.0 — — — 48.0 (41.5) 45.0 (38.9) 38.0 (32.9) 35.0 (30.3) — —
1
-1/2
74 84.0 — — — — 84.0 (72.7) 70.0 (60.6) 60.0 (51.9) 55.0 (47.6) —
76 177.0 — — — — 177.0 (153.1) 102.0 (88.2) 77.0 (66.6) 68.0 (58.8) —
2
86 108.0 — — — — — 108.0 (93.4) 100.0 (86.5) 92.0 (79.6) 83.0 (71.8)
88 389.0 — — — — — 389.0 (336.5) 222.0 (192.0) 160.0 (138.4) 123.0 (106.4)