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 Self Actuated Control Valve

Parameters of  Self Actuated Control Valve

 Design Features

· Diaphragm type with sensitivity adjustment and fast response of the
pressure change
· Piston cylinder with high-pressure resistance and large adjustable travel
· Single-seat control valve, sleeve valve types for wide-range control
· For controlling the downstream pressure

 Self Actuated Control Valve

Description

BCST self-actuated control valve does not require any external energy sources. It is adjusted by flow medium automatically. It has the advantages of using no electricity and no gas source site. The pressure setting can be adjusted during operation. The quick opening flow characteristics are sensitive and of good sealing performance. It is widely used in petroleum, chemical, electric power, metallurgy, food, textile, machinery manufacturing, and residential construction buildings and other industrial equipment for the medium of gas, liquid, and steam. And they have the function of pressure reducing (for valve adjustment) or relief, regulating pressure (before adjustment for the valves), and automatically controlling.

Actuator

 

 Active Area(cm)2 32※ 80 250 630
Setted pressure range (MPa) 0.8~1.6

0.3~1.2

0.1~0.6

0.05~0.3

0.015~0.15

0.01~0.07

0.005~0.035
Min pressure △Pmin(MPa) ≥0.05 ≥0.04 ≥0.01 ≥0.005
 Max differential pressure (MPa) 2 1.25 0.4 0.15
Material Diaphragm cover :Galvanized steel ; Diaphram :EPDM or FKM fiber
 Control pipeline,adaptor Copper pipe or steel pipe 10×1; Ferrule type connector :R1/4 “

Note :※This pressure range is not for DN150 to DN250

 

 Performance  

 Setted allowable error ±8%
 Allowable leakage

 

Metal seal 4×0.01% rated capacity
Soft seal DN15~50 DN65~125 DN150~250
10气泡/min 20气泡/min 40气泡/min

 Allowable working temperature

Diameter 15~125mm 150~250mm
 Seal type Metal seal ≤150℃ ≤140℃
 Cooling tank ≤200℃  Cooling tank& length pipe ≤200℃
Cooling tank & fin ≤350℃  Cooling tank& length pipe≤300℃ ※
Soft Seal ≤150℃

Note : ※ the allowable working temperature for valve , only when the medium is valve , if the working temperature reach 350 °C, please select PN 40 valve body .

 Rated flow cofficient , noise  factor , allowable differential pressure  

Diameter  DN 15 20 25 32 40 50 65 80 100 125 150 200 250
 Rated Flow Factor  KvS 4 6.3 8 16 20 32 50 80 125 160 280 320 400
Noise factor Z Value 0.6 0.6 0.6 0.55 0.55 0.5 0.5 0.45 0.4 0.35 0.3 0.2 0.2
Allowable Differential pressure

(Mpa)

PN16 1.6 1.5 1.2 1.0
PN40 4.0

 

Model Selection

JCZY Structure type Nominal pressure Body material Mode of action Condensator Pressure control scope (KPa) Nominal diameter
Self-operation control valve P: Single seat
M:Sleeve type
PN16=16
CL150LB=150 LB
C=WCB
LC=LCB
P=CF8
PL=CF3
R=CF8M
RL=CF3M
D=Special material
B:
Backstream pressure control
K:
Upstream pressure control
No: without
C: with condensator
15~50 40~80
60~140 120~220
160~220 200~260
240~300 280~350
330~400 380~450
480~560 540~620
600~700 680~800
780~900 880~1000
950~1500 1000~2500
DN50= DN50
NPS2〞=NPS2〞
For example : Single self-operated control valve, Nominal pressure PN16,WCB material ,without condensator, pressure scope : 120—220KPa. Size DN50, Model : JCZYP-16C-B-120~220-DN50

Additional information

Body Type

Single seated, globe type

Size

DN15~DN250 (3/4" to 10")

Pressure Class

1.6, 4.0, 6.4 Mpa;
ANSI 150, ANSI 300, ANSI 600

Characteristics

Quick open

Body Materials

WCB, CF8M, CF3M, CF3

Trim materials

Stainless Steel

Temp range

– 5°C to ~ +70°C

Connection

Flanged, Socket welding, Butt welding

Gland packing

PTFE, Braided PTFE, Grafoil

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