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CAGE TYPE

image of CAGE TYPE

CAGE GUIDED TYPE

The PROVAL cage balanced control valves are designed for heavy duty service.

The valves plug is of a pressure-balanced type that permits flow control of a high differential pressure with bellows seal, extension, fin, jacket bonnet.

Standard actuators are multi-spring diaphragm actuator.

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FEATURES

  • · More flow capacity for initial investment. Streamlined flow passages provide greater capacities than
    most globe bodies of the same line size. Balanced valve plug construction permits use of smaller, lower-cost actuators.
    Also, trim inventory costs are cut because dimensional standardization permits use of most standard
    PROVAL valve cage trim parts.
  • · High-pressure and temperature capability with class IV shut off.
    RTFE piston ring and high-seals permits. This shut off upto 230°C.
· Operational economy
Increased wear resistance of standard hardened stainless steel trim means long lasting service.
· Maintenance economy
The body can stay in the pipeline during removal of trim parts for inspection or maintenance.

SPECIFICATION

Model No. YAD-12231(cage single) / YAD-12241(Cage double) - RA Type,
YAD-22231(cage single) / YAD-22241(Cage double) - DA Type
Valve Type Diaphragm or Cylinder Actuator operated Globe control valve.
BODY Valve Size (mm) 40 50 65 80 100 125 150 200 250 300 350 400 450 500
(inch) 1 ½ 2 2 ½ 3 4 5 6 8 10 12 14 16 18 20
Pressure Rating ANSI 150# ~ 4500# / JIS 10K ~ 63K
End Connections Flange end: FF, RF, RTJ, M/F(female),T/G(female) ※Welding end: SW, BW
Body Materials A216-WCB, A351-CF8, CF8M, CF3M
Operating
Temperature
Single Standard Type: -20°C ~ 210°C Extension: -100°C ~ -20°C
Double Only fin bonnet type: over 220°C
Guide Cage Guide
Gland Packing V-PTFE, PTFE yarn, Graphite yarn
Gasket SUS316 + Graphite spiral wound, other alloy steels.
Painting Color Standard is silver. In the case of stainless steel, flange is not painted.
Plug Characteristics Linear, Equal %.
Cage Type Single Single metal Seated and Hi-Seal.
Double Double metal Seated.
Flow Direction FTC ( Flow Action to Close )
Trim Materials SUS630 (H.T), SUS304 (STL.), SUS316 (STL.), SUS316L (STL.)
Treatment of Trim See “MATERIAL DATA” page 3 ~ 5
PERFORMANCE Control Mode Throttling control, On-off control.
Valve Action Direct action, Reverse action.
Allowable
Differential Pressure
See “ALLOWABLE PRESSURE DROP” page 7
Rated Cv Value See “FLOW CHARACTERISTICS” page 5
Flow Characteristics See “FLOW CHARACTERISTICS” page 6
Rangeability 50A ~ 200A ( 50 : 1 ) , 250A over ( 30 : 1 )
Allowable Seat
Leakage Ratio
Metal Seat Control Single 0.01% of rated Cv (ANSI B16. 104 Class IV)
※Tight shut off-0.005%
0.01% of rated Cv (ANSI B16. 104 Class IV)
Double 0.1% of rated Cv (ANSI B16. 104 Class III)
※Tight shut off-0.01%
0.1% of rated Cv(ANSI B16. 104 Class III)
On-Off Single 0.005% of rated Cv
(ANSI B16. 104 Class Ⅳ Over.)
0.01% of rated Cv
Double 0.01% of rated Cv(ANSI B16. 104 Class Ⅳ) 0.05% of rated Cv
Soft Seat Control
&
On-Off
Single
& Double
ANSI B16. 104 Class VI
Action
Accuracy
Hysteresis (Without positioner) max. 4% F.S.
(With positioner) max. 1% F.S.
Linearity (Without positioner) max. ±5% F.S.
(With positioner) max. ±1% F.S.
ACTUATOR Valve Size (mm) 40 50 65 80 100 125 150 200 250 300 350 400 450 500
(inch) 1 ½ 2 2 ½ 3 4 5 6 8 10 12 14 16 18 20
Model A-270M, A-360M, A-430M, A-520M or Cylinder type
Actuator Type Multi-spring diaphragm type. or Cylinder type
Actuator Size (Diaphragm Size) Ø270 Ø360 Ø430 Ø520 CYLINDER TYPE
Max. Stroke (mm) 30 45 65 90 OVER 100mm
Supply Air Pressure
kPa (kgf/cm²G)
140 (1.4), 240 (2.4), 280 (2.8), 320 (3.2) (300~700) 3.7~7.0
Spring Range
kPa (kgf/cm²G)
20~98 (0.2~1.0), 40~200 (0.4~2.0)
60~220 (0.6~2.2), 80~240 (0.8~2.4)
200~300 (2.0~3.0)
250~350 (2.5~3.5)
Action Direct action, Reverse action.
Materials Diaphragm: EPDM, York: A216-WCB, FCD Case: Al-Alloy, SS41 and STKM Cylinder
Air Connection Rc 1/4″ (※ Rc 3/8” ~ RC1)
Ambient Temperature -20°C ~ +70°C (※ -50°C ~ -20°C, +70°C ~ +100°C)
Painting Color Standard is Cobalt Blue(Munsell No : 2.5 PB3/10 ) [Request other color]

[Notes]
(1) Valve performance is represented under the condition of standard packing (V-PTFE).
(2) ※: Manufactured and attached as according to customer’s order.
(3) Please contact us as to the high pressure rating ANSI classes 900, 1500 and 2500 valves.

DOCUMENTS & DRAWINGS

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