Bellows Cage Type Control Valve

bellows cage type control valve is a kind of control valve with pressure balanced. The valve body structure is compact, the fluid channel is S–streamline. It has advantages of small pressure rise loss, large flow, and wide adjustable range.

The upper bonnet adopts bellows sealing structure, which can completely eliminate the possibility of leakage of process media from the movement gap of the stem. And it is one of the remarkable characteristics of bellows sealing valve. Due to the variability and prominence of the bellows element itself with the anti–aging property, this kind of control valve completely overcomes the weakness of packing sealing valve, such as packing aging and temperature difference sensitivity. Secondly, using the bellows – packing double seal structure, it has better safety and reliability. Therefore, it is widely used in the automatic control system of highly toxic, highly corrosive, radioactive and other rare and special media.

The valve core has large guiding area and good vibration resistance. The control valve is equipped with multi–spring diaphragm actuator or electric actuator, and has compact structure, large output torque.

Standard Specification

Manner	Straight Through Single Seat Cast Ball Valve
Nominal Diameter	40, 50, 65, 80, 100, 125, 150, 200 mm
Nominal Pressure	ANSI Class 125, 150, 300; JIS 10K, 16K, 20K, 40K; PN 1.6, 4.0 MPa
Type of Connection	Flange Type: FF, RF, RJ, TG, MFM / Weld Type: SW (40~~50 mm), BW (65~~200 mm)
The Material of Body and Bonnet	SCPH2/WCB, SCPH21/WC6, SCS13A/CF8, SCS14A/CF8M, SCS16A/CF3M. Titanium and other alloy materials can be used depending on operating temperature and pressure range.
Bonnet Manner	Bellow Seal Type: -196 ~ +350 °C
Gland Manner	Screw Fastening Type
Packing	V-type PTFE Packing, Graphite Packing
Gasket	Plain type, Zigzag type / Stainless steel (SUS304, SUS316, SUS316L) and other alloys
Surface Coating	Blue (Epoxy). When the valve body material is stainless steel, coating is not applied.

Flange Standard: JIS B2201-1984, JB/T79.1-94 (PN1.6MPA), JB/T79.2-94 (PN4.0, 6.4MPA), ANSI B16.5-2009, HG20592-2009, HG20615-2009

High Precision Core Cv Value (%VF, LVF)

Nominal Diameter	Seat Diameter	Rated Cv	Equal Percentage Characteristics (Metal Seat)	Rated Stroke (mm)
32	25	11	△	25
32	32	17	△	25
40	25	11	△	25
40	32	17	△	25
40	40	24	△	25
50	32	17	△	25
50	40	24	△	25
50	50	44	△	25
65	40	24	△	40
65	50	44	△	40
65	65	68	△	40
80	50	44	△	40
80	65	68	△	40
80	80	99	△	40
100	65	68	△	40
100	80	99	△	40
100	100	175	△	40
150	100	175	△	60
150	125	275	△	60
150	150	360	△	60
200	125	275	△	60
200	150	360	△	60
200	200	650	△	60

Note: Symbol △ Means The Range of Valve Specifications.

Actuator

Item	Pneumatic Diaphragm Type	Electronic Type	Intelligent Type
Model	ZJHA/B	381 Series	ZM Series
Type	Multiple Springs Type
Service	Regulation	Regulation	Regulation
Supply Gas Pressure / Supply Voltage	Supply Gas Pressure (spring range): 280 (80–240) kPa; 400 (80–240) kPa	Voltage: 220 / 380V 50Hz; Input Signal: 4–20 mA DC	Voltage: 220 / 380V 50Hz; Input Signal: 4–20 mA DC
Connector	Air Piping: RC1/4	Air Piping: G1/8, G1/4, G1/2, G3/8	Wiring: PG13.5
Positive Action	Adding Pressure — Valve Will Be Closed	Inputting the Signal — Valve Will Be Closed	Inputting the Signal — Valve Will Be Closed
Negative Action	Adding Pressure — Valve Will Be Opened	Inputting the Signal — Valve Will Be Opened	Inputting the Signal — Valve Will Be Opened
Hysteresis	≤1% FS (with Positioner); ≤5% FS (no Positioner)	≤ ±1% FS	≤ ±1% FS
Limit of Intrinsic Error	≤1% FS (with Positioner); ≤11% FS (no Positioner)	≤ ±1% FS	≤ ±1% FS
Ambient Temperature	Normal Temperature Type: −30 ~ +70°C; High Temperature Type: 0 ~ +100°C; Low Temperature Type: −40 ~ +100°C	−20 ~ +70°C	−25 ~ +70°C
Painting Color	Blue Scale 1085/10
Accessory	Positioner; Air Filtration Pressure Reducing Valve; Transmitter; Handwheel	Integrated Type	Integrated Type

Model Selection Parameter Table

Section	Item	10	12	15	20	25	32	40	50	65	80	100	125	150	200
Seat Diameter (mm)	Equal Percentage Cv	1.6	2.5	4	6.3	10	16	25	40	63	100	160	250	400	630
Seat Diameter (mm)	Straight Cv	1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690
Nominal Diameter	Stroke	Optional Flow Coefficient Cv
DN25	16 mm	●	●	●	★
DN32	16 mm	●	●	●	●	★
DN40	25 mm	○	○	○	○	○	★
DN50	25 mm		○	○	○	○	●	★
DN65	25 mm			○	○	○	●	●	★
DN80	40 mm						○	○	○	★
DN100	40 mm						○	○	○	●	★
DN125	40 mm								○	○	○	★
DN150	60 mm									○	○	●	★
DN200	60 mm										○	○	●	●	★
Pneumatic Actuator Diaphragm Active Area Ae (cm²)	Model
	ZJHA/B-22	350
	ZJHA/B-23	350
	ZJHA/B-34	560
	ZJHA/B-45	900
Action	Range of Spring	10	12	15	20	25	32	40	50	65	80	100	125	150	200
Open	20–100 kPa	4.46	3.09	1.98	1.16	0.7	0.44	0.28	0.18	0.17	0.11	0.07	0.07	0.05	0.03
Open	40–200 kPa	6.4	6.4	5.94	3.34	2.14	1.31	0.84	0.53	0.51	0.33	0.21	0.22	0.15	0.09
Open	80–240 kPa	6.4	6.4	6.4	6.4	4.99	3.05	1.95	1.25	1.18	0.78	0.5	0.51	0.36	0.21
Close	20–100 kPa	6.4	6.19	3.96	2.23	2.14	0.87	0.56	0.35	0.34	0.22	0.14	0.15	0.1	0.06
Close	40–200 kPa	6.4	6.4	6.4	6.4	6.4	5.86	3.64	2.3	2.21	1.43	0.91	0.95	0.66	0.37
Close	80–240 kPa	6.4	6.4	6.4	6.4	6.4	6.4	5.04	3.18	3.06	1.98	1.26	1.32	0.92	0.52

Typical Flow Characteristic of Valve

Bellows Cage Type Control Valve

The Size of Control Valve and Hole Shrinkage Internals & Trim; Rated Cv.

Valve Size inch (mm)	Rated Stroke (mm)	Cv Type	10%	30%	50%	70%	100%	10%	30%	50%	70%	100%
			Equal %	Equal %	Equal %	Equal %	Equal %	Straight	Straight	Straight	Straight	Straight
3/4 (20)	16	Cv1	0.09	0.17	0.34	0.95	1.6	0.27	0.68	1.09	1.49	1.8
3/4 (20)	16	Cv2	0.14	0.27	0.53	1.48	2.5	0.42	1.06	1.69	2.32	2.8
3/4 (20)	16	Cv3	0.22	0.43	0.85	2.37	4	0.67	1.66	2.65	3.65	4.4
1 (25)	16	Cv1	0.22	0.43	0.85	2.37	4	0.67	1.66	2.65	3.65	4.4
1 (25)	16	Cv2	0.34	0.68	1.35	3.74	6.3	1.05	2.60	4.16	5.72	6.9
1 1/4 (32)	25	Cv1	0.34	0.68	1.35	3.74	6.3	1.05	2.60	4.16	5.72	6.9
1 1/4 (32)	25	Cv2	0.55	1.08	2.14	5.93	10	1.67	4.15	6.64	9.11	11
1 1/2 (40)	25	Cv1	0.55	1.08	2.14	5.93	10	1.67	4.15	6.64	9.11	11
1 1/2 (40)	25	Cv2	0.87	1.73	3.42	9.49	16	2.67	6.63	10.62	14.58	17.6
2 (50)	25	Cv1	0.87	1.73	3.42	9.49	16	2.67	6.63	10.62	14.58	17.6
2 (50)	25	Cv2	1.36	2.72	5.35	14.82	25	4.17	10.37	16.59	22.79	27.5
2 1/2 (65)	40	Cv1	1.36	2.72	5.35	14.82	25	4.17	10.37	16.59	22.79	27.5
2 1/2 (65)	40	Cv2	2.18	4.32	8.54	23.71	40	6.67	16.58	26.56	36.46	44
3 (80)	40	Cv1	2.18	4.32	8.54	23.71	40	6.67	16.58	26.56	36.46	44
3 (80)	40	Cv2	3.34	6.81	13.45	37.35	63	10.47	26.01	41.63	57.17	69
4 (100)	40	Cv1	3.34	6.81	13.45	37.35	63	10.47	26.01	41.63	57.17	69
4 (100)	40	Cv2	5.45	10.81	21.36	59.28	100	16.69	41.46	66.37	91.14	110
5 (125)	60	Cv1	13.62	10.81	21.36	59.28	100	16.69	41.46	66.37	91.14	110
5 (125)	60	Cv2	21.80	17.29	34.17	94.85	160	26.70	66.34	106.2	145.8	176
6 (150)	60	Cv1	21.80	17.29	34.17	94.85	160	26.70	66.34	106.2	145.8	176
6 (150)	60	Cv2	13.62	27.06	53.40	148.2	250	41.72	103.7	165.9	227.9	275
6 (150)	60	Cv3	21.80	43.23	85.42	237.1	400	66.75	165.85	265.5	364.6	440
8 (200)	60	Cv1	13.62	27.06	53.40	148.2	250	71.72	103.7	165.9	227.9	275
8 (200)	60	Cv2	21.80	43.23	85.42	237.1	400	66.75	165.85	265.5	364.6	440

The Material of Valve and Components, Range of Using Temperature · Allowable Leakage of Seat

Body Material: Carbon Steel

Body Material		SCPH2 / A216-WCB, SCPH21 / A217-WC6, SCPL1 / A352-LCB
Sleeve	Material	SUS630
Sleeve	Treatment	HT
Core	Material	SUS410
Core	Treatment	HT
Gasket	Material	SUS316L
Bellow	Material	SUS304
Allowable Leakage of Seat	ANSI	Class III
Allowable Leakage of Seat	Rated CvX	0.01%
Operating Temperature	SCPH2 / WCB Body	−17 ~ +350 °C
Operating Temperature	SCPH21 / WC6 Body	−17 ~ +350 °C
Operating Temperature	SCPL1 / LCB Body	−45 ~ +350 °C

Body Material: Stainless Steel

Body Material		SCS13A / A351-CF8, SCS14A / A351-CF8M, SCS16A / A351-CF3M
Sleeve	Material	SUS304 / 316 / 316L
Sleeve	Treatment	ST
Core	Material	SUS304 / 316 / 316L
Core	Treatment	ST
Gasket	Material	SUS316L
Bellow	Material	SUS304 / 316 / 316L
Allowable Leakage of Seat	ANSI	Class III
Allowable Leakage of Seat	Rated CvX	0.01%
Operating Temperature		−196 ~ +350 °C

Multi-spring Diaphragm Actuator

Actuator Model	Air Pressure (kPa)	Spring Range (kPa)	3/4 (20)	1 (25)	1 1/4 (32)	1 1/2 (40)	2 (50)	2 1/2 (65)	3 (80)	4 (100)	5 (125)	6 (150)	8 (200)
ZJHA/B-22	140	20–100	1.17	0.75	–	–	–	–	–	–	–	–	–
ZJHA/B-22	240	40–200	2.73	1.75	–	–	–	–	–	–	–	–	–
ZJHA/B-22	300	80–240	5.85	3.75	–	–	–	–	–	–	–	–	–
ZJHA/B-23	140	20–100	1.64	1.05	0.63	0.40	0.26	–	–	–	–	–	–
ZJHA/B-23	240	40–200	3.82	2.45	1.49	0.96	0.61	–	–	–	–	–	–
ZJHA/B-23	300	80–240	8.19	5.24	3.19	2.05	1.31	–	–	–	–	–	–
ZJHA/B-34	140	20–100	–	–	1.02	0.66	0.42	0.24	0.16	0.10	–	–	–
ZJHA/B-34	240	40–200	–	–	2.38	1.53	0.98	0.58	0.38	0.24	–	–	–
ZJHA/B-34	300	80–240	–	–	5.12	3.28	2.10	1.24	0.82	0.52	–	–	–
ZJHA/B-45	140	20–100	–	–	–	–	–	0.40	0.26	0.17	0.11	0.07	0.02
ZJHA/B-45	240	40–200	–	–	–	–	–	0.93	0.61	0.39	0.25	0.17	0.07
ZJHA/B-45	300	80–240	–	–	–	–	–	1.98	1.32	0.84	0.54	0.37	0.16

381L Series of Electronic Actuator

Model	Voltage Rating	3/4 (20)	1 (25)	1 1/4 (32)	1 1/2 (40)	2 (50)	2 1/2 (65)	3 (80)	4 (100)	5 (125)	6 (150)	8 (200)
381LSA-08	110V / 220V / 380V	2.38	1.52	0.93	0.59	0.38	–	–	–	–	–	–
381LSA-08	110V / 220V / 380V	1.91	1.22	0.74	0.47	0.30	–	–	–	–	–	–
381LSA-20	110V / 220V / 380V	4.77	3.05	1.86	1.19	0.76	0.45	–	–	–	–	–
381LSA-20	110V / 220V / 380V	3.82	2.44	1.49	0.95	0.61	0.36	–	–	–	–	–
381LSB-30	110V / 220V / 380V	–	–	2.79	1.79	1.14	0.67	1.21	0.28	0.18	0.12	0.03
381LSB-30	110V / 220V / 380V	–	–	2.23	1.43	0.91	0.54	0.96	0.22	0.14	0.10	0.02
381LSB-50	110V / 220V / 380V	–	–	4.66	2.98	1.91	1.13	1.51	0.47	0.30	0.21	0.08
381LSB-50	110V / 220V / 380V	–	–	3.73	2.38	1.52	0.90	1.20	0.38	0.24	0.16	0.06
381LSC-65	110V / 220V / 380V	–	–	–	–	–	1.35	2.34	0.57	0.36	0.25	0.11
381LSC-65	110V / 220V / 380V	–	–	–	–	–	1.08	1.87	0.45	0.29	0.20	0.08
381LSC-99	110V / 220V / 380V	–	–	–	–	–	2.26	2.92	0.95	0.61	0.42	0.20
381LSC-99	110V / 220V / 380V	–	–	–	–	–	1.80	2.33	0.76	0.48	0.33	0.15
381LSC-160	110V / 220V / 380V	–	–	–	–	–	–	–	–	0.97	0.67	0.35
381LSC-160	110V / 220V / 380V	–	–	–	–	–	–	–	–	0.78	0.54	0.27

Outline Drawing

Bellows Cage Type Control Valve

Appearance Dimension

Nominal Diameter (inch)	Nominal Diameter (mm)	L ANSI150 PN16/25 (GB/T12221)	L ANSI150 PN16/25 (GB/T17213.3)	L ANSI300 PN40 (GB/T17213.3)	L ANSI600 PN64/100 (GB/T17213.3)	H1	H2	H3	Electrical Actuator	Pneumatic Actuator
3/4	20	150	184	194	206	40	135	274	381LSA-20	ZJHA/B-22
1	25	160	184	197	210	43	146	274	381LSA-20	ZJHA/B-22
1 1/4	32	180	210	235	251	45	163	302	381LSB-30	ZJHA/B-23
1 1/2	40	200	222	235	251	56	163	302	381LSB-30	ZJHA/B-23
2	50	230	254	267	286	73	165	302	381LSB-30	ZJHA/B-23
2 1/2	65	290	276	292	311	83	217	375	381LSB-50	ZJHA/B-34
3	80	310	298	317	337	102	235	375	381LSB-50	ZJHA/B-34
4	100	350	352	368	394	110	236	375	381LSB-50	ZJHA/B-34
5	125	400	420	425	457	146	340	465	381LSC-99	ZJHA/B-45
6	150	480	451	473	508	170	340	465	381LSC-99	ZJHA/B-45
8	200	600	543	568	610	220	383	465	381LSC-99	ZJHA/B-45

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Bellows Cage Type Control Valve