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SPCV-1

Pneumatic Diaphragm Globe Control Valve

- 특 징

- 주의사항

- 치 수

SIZE 15A~25A(½"~¾") 25A(1") 32A(1¼") 40A(1½") 50A(2") 65A(2½") 80A(3") 100A(4") 125A(5") 150A(6")
L 185 185 205 205 220 265 280 330 370 412
H1 80 85 90 95 105 110 110 140 170 190
H2 . . . . . . . . . .
CV 5 8 14 22 37 62 95 150 237 330

- 사 양

적용
유체
사용
압력
사용
온도
접속
방식
재질 구동형식 악세사리 구동부
WATER
AIR
STEAM
MAX
10kgf/g

MAX
20kgf/g

MAX
30kgf/g
MAX
80℃
KS 10K/20K
/30K RF/FF
FLANGE,
ANSI 150#/
300#/600#
RF
FLANGE
BODY
GCD450,
SCPH2,
SCS13

TRIM
STS
PTFE
단동식 E/P
Positioner
Sol. Valve,
Air Regulator,
Air Set.
다이야
후렘식
– 온도 80℃ 이상은 주문생산
– ANSI, DIN 주문생산
– STS316, STS316L은 주문생산 – CV CALCULATION

- CV CALCULATION

[①,② : IEC / ANS / ISA-S75.01, ③~⑥ : FCI62-1]

- CONTROL VALVE SEAT LEAKAGE CLASSIFICATION

[FCI 70-2]

Leakage
Class
Designation
Maxinum
Leakage
Allowable
Test
medium
Test
pressures
Test procedures Required
for Establishing ration
- - - Not test required provided
user and supplier so agree
0.5% of rated capacity Air or water at
50-125° F
(10-52℃)
45-60 psig or max
opreation differential,
whichever os lower
Pressure applied to valve
inlet, with outlet open to
atmosphere or connected
to a low head loss measuring
device full normal closing
thrust provided by actuator
0.1% of rated capacity As above As above As above
0.01% of rated capacity As above As above As above
0.0005㎖ per minute
of water per inch
of port diameter per
psi differential
Water at
50-125° F
(10-52℃)
Max. service pressure
drop across valve
plug, not to exceed
ANSI body rating.
(100psi pressure drop
minimum)

Pressure applied to valve inlet,
after filling entire body cavity
and connected pipe with water
and stroking valve plug closed.
Use net specified max. actuator
thrust, but no more, even if
available during test.
Allow time for leakage flow
to stabilizer.

Not to exceed amounts
shown in following
table based on port
diameter
Air or Nitrogen
at
50-125° F
(10-52℃)
50 psig or max.
Rated differential
pressure across
valve plug.
Whichever if lower.
Actuator should be adjusted to
operating conditions specific
with full normal closing thrust
applied to valve plug seat.
Allow time for leakage flow
to stabilize & use suitable
measuring device.
Nominal prot diameter Leakage factor
Inches(B) Millimeters(mm) per Minute Bubbles per minute
1" 25 0.15 1
1½" 38 0.30 2
2" 51 0.45 3
2½" 64 0.60 4
3" 76 0.90 6
4" 102 1.70 11
6" 152 4.00 27
8" 203 6.75 45

Bubble per minute as tabulated are an easily measured suggestedalternative based on suitable calibrated measuring device such as a ¼”O.D.x0.032″ wall tube submerged in water to a depth of ⅛” to ¼”. The tube end shall be cut square and smooth with on chamfersor burrs and the tube axis shall be perpendicular to the surface of the water. Otherapparatus may be constructed and the number of bubbles per minute may vary from these shown. Aslong as they correctly indicate the flow in miper minute.