Single Seat Control Valve

Single seat control valve is a kind of control valve with top guiding structure. It has "S–streamline" fluid channel, small pressure drops, large flow and adjustable range. It has high accuracy of flow characteristic, large plug guiding area, good vibration resistance.

It is equipped with multi–spring pneumatic diaphragm actuator or electric actuator. It has characteristics of small size, light weight, large output force, easy installation, which can be used to control a variety of different pressure and temperature of the fluid.

Standard Specification

Manner	Straight Through Single Seat Cast Ball Valve
Nominal Diameter	15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200 mm
Nominal Pressure	ANSI Class 150, 300, 600; JIS 10K, 20K, 30K, 40K; PN 1.6, 4.0, 6.4 MPa
Type of Connection	Flange Type: FF, RF, RJ, TG, MFM / Weld Type: SW (40–50 mm), BW (65–200 mm)
Body and Bonnet Material	SCPH2, WCB, SCPH21, WC6, SCS13A/CF8, SCS14A/CF8M, SCS16A/CF3M, Ti
Body and Bonnet Operating Range	Pressure and temperature range depend on material
Bonnet Manner	Normal Temperature (P): −17 ~ +230 °C / High Temperature (e): −45 ~ +230 ~ +566 °C / Extension Type (e li): −100 ~ −45 °C
Gland Manner	Screw Fastening Type
Packing	V-type PTFE Packing, Graphite Packing
Gasket	Zigzag
Surface Coating	Blue (Epoxy). When the valve body material is stainless steel, coating is not applied.

Cv Valve and Stroke

Nominal Diameter	15	15	15	20	20	25	25	32	32	40	40	50	50
Seat Diameter	10	12	15	15	20	20	25	25	32	25	32	32	40
Rated Cv	1.6	2.5	4	4	6.3	6.3	10	10	17	10	17	24	17
Rated Stroke	16	16	16	16	16	16	16	16	16	25	25	25	25

Nominal Diameter	65	65	65	80	80	80	100	100	100	125	125	125	150	150	150	200
Seat Diameter	40	50	65	50	65	80	65	80	100	80	100	125	100	125	150	125
Rated Cv	24	40	63	40	63	100	63	100	160	100	160	250	160	250	400	250
Rated Stroke	40	40	40	40	40	40	40	40	40	60	60	60	60	60	60	60

Actuator

Item	Pneumatic Diaphragm Type	Cylinder Piston Type	Electronic Type	Intelligent Type
Model	ZJHA/B	ZTCLS / ZTCL	381 Series	ZM Series
Springs Type	Multiple Springs	Single Action / Double Action	—	—
Service	Regulation	Regulation	Regulation	Regulation
Supply Gas Pressure and Supply Voltage	Supply Gas Pressure (Spring Range): 140(20–100) kPa; 160(20–100) kPa; 280(80–240) kPa; 400(80–240) kPa	Supply Gas Pressure: 300–500 kPa	Voltage: 220 / 380 V 50 Hz; Input Signal: 4–20 mA DC	Voltage: 220 / 380 V 50 Hz; Input Signal: 4–20 mA DC
Connector	Air Piping: Rc1/4	Air Piping: G1/8; G1/4; G1/2; G3/8	Wiring: PG13.5	Wiring: PG13.5
Positive Action	Adding Pressure – Valve Will Be Closed	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	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); ≤3% FS (No Positioner); ≤5% FS (Match Type HA1)	≤1% FS (With Positioner); ≤3% FS (No Positioner)	≤±1% FS	≤±1% FS
Limit of Intrinsic Error	≤±1% FS (With Positioner); ≤±2% FS (Match Type); ≤±1% FS (No Positioner)	≤±1% FS (With Positioner); ≤±1.5% FS (No Positioner); ≤±5% FS (Match Type)	≤±1% FS	≤±1% FS
Ambient Temperature	Standard: −30 ~ +70°C; High Temp: 0 ~ +100°C; Low Temp: −40 ~ +40°C	Standard: −20 ~ +60°C; High Temp: 0 ~ +100°C; Low Temp: −50 ~ +60°C	−20 ~ +70°C	−25 ~ +70°C
Painting Color	Blue Scale 10B5/10	Blue Scale 10B5/10	—	—
Accessory	Positioner / Air Filter / Pressure Reducing Valve / Transmitter / Handwheel	Positioner / Air Filter / Pressure Reducing Valve / Transmitter / Handwheel	Integrated Type	Integrated Type

Single Seat Control Valve

Remark:

1.Hardening treatment: starlite surfacing or 440B hardening.

2.It is used for cavitation, flash evaporation of forbidden oil or other occasions with closing requirements. Regardless of the working temperature and pressure difference, it is recommended to surfacing stailai alloy.

3.It is suggested that using 440B when the temperature of cavitation, flash or water is over 100 ℃.

Remark:

1.It is recommended to use metal seal when the occasions are saturated steam, hot water, or may cause corrosion and contain impurities.

2.It is used for soft seal by glass fiber and PTFE when treating oil prohibition.

Model Selection Parameter Table

Rated Flow Cv Value

Seat Diameter (mm)	10	12	15	20	25	32	40	50	65	80	100	125	150	200
Equal Percentage	1.6	2.5	4	6.3	10	17	24	40	63	100	160	250	400	630
Straight	1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690

Nominal Diameter / Stroke / Optional Coefficient Of Flow Cv

(★ Standard Type • Recommended Type ○ Customized Type)

Nominal Diameter	Stroke	10	12	15	20	25	32	40	50	65	80	100	125	150
DN20	16 mm	●	●	●	★
DN25	16 mm	●	●	●	●	★
DN32	25 mm	○	○	○	○	○	★
DN40	25 mm		○	○	○	○	●	★
DN50	25 mm			○	○	○	●	●	★
DN65	40 mm						○	○	○	★
DN80	40 mm						○	○	○	●	★
DN100	40 mm						○	○	○	●	●	★
DN125	60 mm								○	○	○	★
DN150	60 mm									○	○	●	★
DN200	60 mm									○	○	●	●	★

Pneumatic Actuator Diaphragm Active Area Ae

Model	ZJHA/B-22	ZJHA/B-23	ZJHA/B-34	ZJHA/B-45
Active Area Ae (cm²)	350	350	560	900

Allowable Pressure Differential of Metal Seal (MPa)

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	0.70	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	0.50	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	0.10	0.06
Close	40–200 kPa	6.4	6.4	6.4	6.4	6.4	5.86	3.64	2.30	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

High Precision Flow Characteristic of Valve

Single Seat Control Valve

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

Valve Size	Core Size (inch/mm)	Rated Stroke (mm)	Eq 10%	Eq 25%	Eq 50%	Eq 75%	Eq 100%	St 10%	St 25%	St 50%	St 75%	St 100%
3/4 (20)	1/4 (8)	16	0.09	0.17	0.34	0.95	1.87	0.27	0.68	1.09	1.49	2.10
3/4 (20)	3/8 (10)	16	0.14	0.27	0.53	1.48	2.92	0.42	1.06	1.69	2.32	3.27
3/4 (20)	1/2 (15)	16	0.22	0.43	0.85	2.37	4.67	0.67	1.66	2.65	3.65	5.13
3/4 (20)	3/4 (20)	16	0.34	0.68	1.35	3.74	7.35	1.05	2.60	4.16	5.72	8.05
1 (25)	1/2 (15)	16	0.22	0.43	0.85	2.37	4.67	0.67	1.66	2.56	3.65	5.13
1 (25)	3/4 (20)	16	0.34	0.68	1.35	3.74	7.35	1.05	2.60	4.16	5.72	8.05
1 (25)	1 (25)	16	0.55	1.08	2.14	5.93	11.67	1.67	4.15	6.64	9.11	12.84
1-1/4 (32)	3/4 (20)	25	0.34	0.68	1.35	3.74	7.35	1.05	2.60	4.16	5.72	8.05
1-1/4 (32)	1 (25)	25	0.55	1.08	2.14	5.93	11.67	1.67	4.15	6.64	9.11	12.84
1-1/4 (32)	1-1/4 (32)	25	0.87	1.73	3.42	9.49	18.67	2.67	6.63	10.62	14.58	20.54
1-1/2 (40)	1 (25)	25	0.55	1.08	2.14	5.93	11.67	1.67	4.15	6.64	9.11	12.84
1-1/2 (40)	1-1/4 (32)	25	0.87	1.73	3.42	9.49	18.67	2.67	6.63	10.62	14.58	20.54
1-1/2 (40)	1-1/2 (40)	25	1.36	2.72	5.35	14.82	29.17	4.17	10.37	16.59	22.79	32.09
2 (50)	1-1/4 (32)	25	0.87	1.73	3.42	9.49	18.67	2.67	6.63	10.62	14.58	20.54
2 (50)	1-1/2 (40)	25	1.36	2.72	5.35	14.82	29.17	4.17	10.37	16.59	22.79	32.09
2 (50)	2 (50)	25	2.18	4.32	8.54	23.71	46.68	6.67	16.58	26.56	36.46	51.35
2-1/2 (65)	1-1/2 (40)	40	1.36	2.72	5.35	14.82	29.17	4.17	10.37	16.59	22.79	32.09
2-1/2 (65)	2 (50)	40	2.18	4.32	8.54	23.71	46.68	6.67	16.58	26.56	36.46	51.35
2-1/2 (65)	2-1/2 (65)	40	3.34	6.81	13.45	37.35	73.52	10.47	20.01	41.63	57.17	80.52
3 (80)	2 (50)	40	2.18	4.32	8.54	23.71	46.68	6.67	16.58	26.56	36.46	51.35
3 (80)	2-1/2 (65)	40	3.34	6.81	13.45	37.35	73.52	10.47	26.01	41.63	57.17	80.52
3 (80)	3 (80)	40	5.45	10.81	21.36	59.28	116.7	16.69	41.46	66.37	91.14	128.4
4 (100)	2-1/2 (65)	40	3.34	6.81	13.45	37.35	73.52	10.47	26.01	41.63	57.17	80.52
4 (100)	3 (80)	40	5.45	10.81	21.36	59.28	116.7	16.69	41.46	66.37	91.14	128.4
4 (100)	4 (100)	40	8.72	17.29	34.17	94.85	186.7	26.70	66.34	106.2	145.8	205.4
5 (125)	3 (80)	60	13.62	10.81	21.36	59.28	116.7	16.69	41.46	66.37	91.14	128.4
5 (125)	4 (100)	60	21.80	17.29	34.17	94.85	186.7	26.70	66.34	106.2	145.8	205.4
5 (125)	5 (125)	60	13.62	27.06	53.40	148.2	291.7	41.72	103.7	165.9	227.9	320.9
6 (150)	4 (100)	60	21.80	17.29	34.17	94.85	186.7	26.70	66.34	106.2	145.8	205.4
6 (150)	5 (125)	60	13.62	27.06	53.40	148.2	291.7	41.72	103.7	165.9	227.9	320.9
6 (150)	6 (150)	60	21.80	43.23	65.42	237.1	466.8	66.75	165.85	265.5	364.6	513.5
8 (200)	5 (125)	60	13.62	27.06	53.40	148.2	291.7	41.72	103.7	165.9	227.9	320.9
8 (200)	6 (150)	60	21.80	43.23	85.42	237.1	466.8	66.75	165.85	265.5	364.6	513.5
8 (200)	8 (200)	60	34.34	68.08	134.5	373.5	735.2	104.7	260.1	416.3	571.7	805.2

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

Body Material: Carbon Steel

Item	Material / Treatment	Column 1	Column 2	Column 3
Body Material		SCPH2 / A216-WCB	SCPH21 / A217-WC5	SCPL1 / A352-LCB
Core	Material	SUS304 / 316	SUS304 / 316	SUS304 / 316
	Treatment	–	R.TFE	SS / SF
Seat	Material	SUS304 / 316	SUS304 / 316	SUS304 / 316
	Treatment	–	–	SS / SF
Guide Sleeve	Material	SUS420	SUS420	SUS420
	Treatment	HT	HT	HT
Gasket	Material	SUS316L	SUS316L	SUS316L
Allowable Leakage of Seat	ANSI	CLASS IV	CLASS VI	CLASS IV
	Rated CvX	0.01%	Bubble-Tight	0.01%

Operating Temperature (°C)

Body Type	Column 1	Column 2	Column 3
SCPH2 / WCB Body	−17 ~ +425	−17 ~ +230	−17 ~ +425
SCPH21 / WC6 Body	−17 ~ +566	−17 ~ +230	−17 ~ +566
SCPL1 / LCB Body	−45 ~ +350	−45 ~ +270	−45 ~ +350

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

Body Material: Stainless Steel

Item	Material / Treatment	Column 1	Column 2	Column 3
Body Material		SCS13A / CF8	SCS14A / CF8M	SCS16A / CF3M
Core	Material	SUS304 / 316 / 316L	SUS304 / 316	SUS304 / 316 / 316L
	Treatment	–	R.TFE	SS / SF
Seat	Material	SUS304 / 316 / 316L	SUS304 / 316 / 316L	SUS304 / 316 / 316L
	Treatment	–	–	SS / SF
Guide Sleeve	Material	SUS304 / 316 / 316L	SUS304 / 316 / 316L	SUS304 / 316 / 316L
	Treatment	–	R.TFE	ST
Gasket	Material	SUS316L	SUS316L	SUS316L
Allowable Leakage of Seat	ANSI	CLASS IV	CLASS VI	CLASS IV
	Rated CvX	0.01%	Bubble-Tight	0.01%
Operating Temperature (°C)		−196 ~ +566	−45 ~ +230	−196 ~ +566

R.TFE: Reinforced PTFE | HT: Heat Treatment | ST: Surfacing Stellite Alloy | SS: Partial Surfacing Stellite Alloys | SF: All Surfacing Stellite Alloys

Allowable Differential Pressure

Multi-spring Diaphragm Actuator
Unit: MPa

Actuator Specification	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
Unit: MPa

Model / Specification	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:

Single Seat Control Valve

Appearance Dimension

Unit: mm

DN (inch)	DN (mm)	ANSI150 PN16/25 (GB/T12221)	ANSI150 PN16/25 (GB/T17213.3)	ANSI300 PN40 (GB/T17213.3)	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	402	425	500	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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Single Seat Control Valve