Control systems Control valves
4
Spira-trol TM selection guide: Valve size
1½"
ASME standard = ½", ¾", 1", 1¼", 1½", 2", 2½", 3" and 4"
K = K series 2-port control valve L = L Series 2-port control valve
Valve series
K
E = Equal percentage
Valve characteristic
E
F = Fast opening L = Linear
Flange type
A
A = ASME
Blank = under
Flow
Blank
T = over
3 = Cast iron
4 = Carbon steel 6 = Stainless steel 7 = SG iron
Body material
4
1 = Screwed
Connections
3
2 = Socket weld 3 = Flanged
D = Bellows/graphite secondary seals
4.1 79
H = Graphite N = PTFE with Nitronic TM bush - DN15 to DN50 only P = PTFE V = PTFE for vacuum service
Stem sealing
P
C = Reverseable PEEK Seat P = Full PEEK S = 316L stainless steel T = 431 stainless steel W = 316L with stellite TM 6 facing A1 = 1 stage anti-cavitation A2 = 2 stage anti-cavitation P1 = 1 stage low noise cage P2 = 2 stage low noise cage P3 = 3 stage low noise cage S = Standard trim
Seating
T
Type of trim
S
B = Balanced (not available with seating option C)
Trim balancing
U
U = Unbalanced E = Extended
Bonnet type
S
S = Standard S = Standard
Bolting Series
S
.2
2 = .2
Cv
Cv29
To be specified To be specified
Connection type
Flanged Class 300
Selection example: 1½" - K
EA43PTSUSS
.2 - Cv29 -
Flanged Class 300
How to order Example: 1 off Spirax Sarco Spira-trol TM 1.5" KEA43PTSUSS.2 Cv29 two-port control valve having flanged Class 300 connections.
TI-S24-72 CTLS Issue 7
Page 23 of 23
Spira-trol TM Two-port Control Valves ASME Standard K and L Series ½" to 4"
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