Balance Cage Type Control Valve

balance cage type control valve is a kind of control valve with pressure balanced. The fluid channel is streamlined. It is equipped with turning vane to improve the smooth flow of fluid around the sleeve. It has advantages of small pressure rise loss, large flow, and wide adjustable range. Besides, it has high accuracy of flow characteristic curve, good dynamic stability, low noise and small cavitation corrosion.

The control valve is equipped with multi–spring diaphragm actuator or electric actuator, and has compact structure, large output torque, which can easily control high pressure differential fluid with high temperature or low temperature.

Standard Specification

Manner	Straight Through Casting Ball Valve
Nominal Diameter	32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400 mm
Nominal Pressure	ANSI Class 125, 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 (32–50 mm), BW (65–400 mm)
Material of Body and Bonnet	SCPH2/WCB, SCPH21/WC6, SCS13A/CF8, SCS14A/CF8M, SCS16A/CF3M, Titanium and other alloy materials.
Bonnet Manner	Normal Temperature (P): -17 ~ +230℃; Elongation Type I (e I): -45 ~ -17℃ and +230 ~ +566℃; Elongation Type II (e II): -100 ~ -45℃
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 (%CF, LCF)

Nominal Diameter	Seat Diameter	Equal Percentage Cv	Linear
32	25	11	△
32	32	17	△
40	25	11	△
40	32	17	△
40	40	24	△
50	32	17	△
50	40	24	△
50	50	44	△
65	40	24	△
65	50	44	△
65	65	68	△
80	50	44	△
80	65	68	△
80	80	99	△
100	65	68	△
100	80	99	△
100	100	175	△
125	80	99	△
125	100	175	△
125	125	275	△
150	100	175	△
150	125	275	△
150	150	360	△
200	125	275	△
200	150	360	△
200	200	650	△
250	250	1050	△
300	300	1220	△
350	350	1700	△
400	400	1800	△

Rated Stroke

Nominal Diameter Range	Rated Stroke (mm)
32–65	25
80–100	40
125–200	60
250–300	100
350–400	120

Note: Symbol Means The Range Of Valve Specifications.

Actuator

Item	Pneumatic Diaphragm Type	Cylinder Piston Type (Single Action)	Cylinder Piston Type (Double Action)	Electronic Type	Intelligent Type
Model	ZJHA/B	ZTCLS	ZTCL	381 Series	ZM Series
Structure	Multiple Springs Type	Single Action	Double Action	—	—
Service	Regulation	Regulation	Regulation	Regulation	Regulation
Supply Pressure / 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	Supply Gas Pressure: 300–500 kPa	Voltage: 220/380V 50Hz; Input Signal: 4–20mA DC	Voltage: 220/380V 50Hz; Input Signal: 4–20mA DC
Connector	Air Piping: RC1/4	Air Piping: G1/8, G1/4, G1/2, G3/8	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	Adding Pressure – Valve Will Be Closed	Inputting Signal – Valve Will Be Closed	Inputting Signal – Valve Will Be Closed
Negative Action	Adding Pressure – Valve Will Be Opened	Adding Pressure – Valve Will Be Opened	Adding Pressure – Valve Will Be Opened	Inputting Signal – Valve Will Be Opened	Inputting Signal – Valve Will Be Opened
Hysteresis	≤1% FS (with positioner); ≤3% FS (no positioner)	≤1% FS (with positioner); ≤3% FS (no positioner)	≤1% FS (with positioner); ≤3% FS (no positioner)	=1% FS	=1% FS
Limit of Intrinsic Error	≤1% FS (with positioner); ≤5% FS (no positioner)	≤1% FS (with positioner); ≤5% FS (no positioner)	≤1% FS (with positioner); ≤5% FS (no positioner)	=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	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	Blue Scale 10B5/10	—	—
Accessory	Positioner / Air Filtration / Pressure Reducing Valve / Transmitter / Handwheel	Positioner / Air Filtration / Pressure Reducing Valve / Transmitter / Handwheel	Positioner / Air Filtration / Pressure Reducing Valve / Transmitter / Handwheel	Integrated Type	Integrated Type

Model Selection Parameter Table

Rated Flow Cv Value

Seat Diameter (mm)	32	40	50	65	80	100	125	150	200	250	300	350	400
Equal Percentage Cv	17	24	40	63	100	160	250	400	630	1000	1400	1700	1800
Straight Cv	17.6	27.5	44	69	110	176	275	440	690	1100	1500	2050	2730

Optional Coefficient of Flow Cv

(★ standard type • recommend type ○ customized type)

Nominal Diameter	Stroke	32	40	50	65	80	100	125	150	200	250	300	350	400
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				○	○	•	•	○	★
DN250	100 mm						○	•	•	○	★
DN300	100 mm							○	•	•	○	★
DN350	120 mm											•	★
DN400	120 mm												•	★

Pneumatic Actuator Diaphragm Active Area Ae (cm²)

Model	Active Area
ZHA/B-23	350
ZHA/B-34	560
ZHA/B-45	900
ZHA/B-56	1600

Allowable Pressure Differential of Metal Seal (MPa)

Range of Spring	32	40	50	65	80	100	125	150	200	250	300	350	400
20–100 kPa	2.25	2.25	1.95	2.36	2.04	1.67	1.41	1.41	1.14	0.65	0.55	0.50	0.48
40–200 kPa	6.4	6.4	6.4	6.4	6.4	6.4	6.4	6.4	6.4	1.55	1.40	1.30	1.25
80–240 kPa	6.4	6.4	6.4	6.4	6.4	6.4	6.4	6.4	6.4	4.08	4.08	3.85	0.48

Range of Spring	32	40	50	65	80	100	125	150	200	250	300	350	400
20–100 kPa	1.13	1.13	0.98	1.18	1.02	0.84	0.71	0.71	0.57	0.65	0.55	0.50	0.48
40–200 kPa	3.38	3.38	2.93	3.54	3.06	2.51	2.12	2.12	1.71	1.80	1.55	1.40	0.48
80–240 kPa	6.4	6.4	6.4	6.4	6.4	5.85	4.94	4.94	4.00	4.08	3.65	3.40	3.20

High Precision Flow Characteristic of Valve

Balance Cage Type Control Valve

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

Body Material: Carbon Steel

Category	Item	Property	SCPH2/A216-WCB	SCPH21/A217-WC6	SCPL1/A352-LCB
Body Material	Body	Material	SCPH2/A216-WCB	SCPH21/A217-WC6	SCPL1/A352-LCB
Core	Core	Material	SUS630	SUS304/316	SUS304/316
Core	Core	Treatment	HT	–	SS/SF
Seat	Seat	Material	SUS410	SUS304/316	SUS304/316
Seat	Seat	Treatment	HT	–	SS/SF
Gasket	Gasket	Material	SUS316L	SUS316L	SUS316L
Allowable Leakage of Seat	ANSI	Leakage Class	CLASS III	CLASS III	CLASS III
Allowable Leakage of Seat	Rated CvX	Leakage Rate	0.5%	0.5%	0.5%
Operating Temperature (°C)	SCPH2/WCB Body	Temperature Range	-17 ~ +425	-17 ~ +425	-17 ~ +425
Operating Temperature (°C)	SCPH21/WC6 Body	Temperature Range	-17 ~ +566	-17 ~ +566	-17 ~ +566
Operating Temperature (°C)	SCPL1/LCB Body	Temperature Range	-45 ~ +350	-45 ~ +350	-45 ~ +350

Body Material: Stainless Steel

Category	Item	Property	SCS13A/CF8	SCS14A/CF8M / SCS16A/CF3M
Body Material	Body	Material	SCS13A/CF8	SCS14A/CF8M, SCS16A/CF3M
Core	Core	Material	SUS304/316/316L	SUS304/316/316L
Core	Core	Treatment	–	SS/SF
Seat	Seat	Material	SUS304/316/316L	SUS304/316/316L
Seat	Seat	Treatment	–	SS/SF
Gasket	Gasket	Material	SUS316L	SUS316L
Allowable Leakage of Seat	ANSI	Leakage Class	CLASS III	CLASS III
Allowable Leakage of Seat	Rated CvX	Leakage Rate	0.5%	0.5%
Operating Temperature (°C)	Temperature Range	Range	-196 ~ +566	-196 ~ +566

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

Outline Drawing

Balance Cage Type Control Valve

Appearance Dimension

Unit:mm

DN (inch)	DN (mm)	L ANSI150 (GB/T12221)	L ANSI150 (GB/T17213.3)	L ANSI300 (GB/T17213.3)	L ANSI600 (GB/T17213.3)	H1	H2	H3	Electrical Actuator	Pneumatic Actuator
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	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
10	250	730	673	708	752	305	427	666	381LSC-160	ZJHA/B56
12	300	850	737	775	819	345	435	666	381LSC-260	ZJHA/B56
14	350	980	889	889	972	385	435	680	381LSC-400	ZTCL Series
16	400	1100	1016	1016	1108	420	454	680	381LSC-400	ZTCL Series

Manufacturing Process

Step 1: Order and Design

According to the customer’s working conditions, pressure class, temperature, flow coefficient and leakage requirement, the balance cage type control valve is confirmed in terms of body structure, trim size, actuator type and material selection. Detailed production drawings and process documents are then prepared for manufacturing.

Balance Cage Type Control Valve

Step 2: Forging & Casting

The valve body, bonnet and other pressure-containing parts of the balance cage type control valve are produced by casting or forging according to the material specification. After forming, the raw parts are checked for surface quality, dimensions and internal soundness to ensure they meet production requirements.

Balance Cage Type Control Valve

Step 3: Machining

All key parts are machined precisely, including valve body, bonnet, seat ring, cage, plug, stem and flange faces. For the balance cage type control valve, special attention is given to the cage window accuracy, plug guiding surfaces and sealing dimensions to ensure stable throttling performance and pressure balance effect.

Balance Cage Type Control Valve

Step 4: Assembly

After cleaning and inspection, all machined parts are assembled in sequence, including trim assembly, stem connection, bonnet installation and actuator mounting. During assembly of the balance cage type control valve, the alignment between cage, plug and seat must be strictly controlled to guarantee smooth movement and reliable control performance.

Balance Cage Type Control Valve

Step 5: Testing & Quality Assurance

Each balance cage type control valve undergoes pressure test, seat leakage test, stroke calibration and action performance test. At the same time, dimensional inspection, material verification and appearance check are carried out to ensure the valve fully complies with technical and quality standards.

Balance Cage Type Control Valve

Step 6: Painting and Finishing

After final inspection, the valve surface is cleaned, painted and marked according to project or customer requirements. Then the product is packed properly for storage and shipment, ensuring good protection during transportation.

Balance Cage Type Control Valve

Applications

The balance cage type control valve valve has good dynamic stability, low noise and anti-vibration characteristics. It is suitable for controlling high-pressure differential fluids of various temperatures. When equipped with a multi-spring diaphragm actuator or an electric actuator, its structure is compact and the output force is strong.

These valves are widely used in:

Oil and Gas

Chemical Processing

Power Plants

Water Treatment

Metallurgy and Mining

Agriculture and Irrigation

Factory Environment

Factory Production Line

Material Storage

Quality Control

Assembly Workshop

Quality Control

Assembly Workshop

Why Choose Us

Superior Quality

Our valves are manufactured using premium materials and undergo rigorous quality testing to ensure reliable performance in demanding industrial applications.

Advanced Technology

Equipped with state-of-the-art CNC machining centers and precision manufacturing equipment, we deliver valves with exceptional accuracy and consistency.

Competitive Pricing

Through optimized manufacturing processes and bulk material procurement, we offer high-quality valves at competitive prices without compromising on quality.

Expert Support

Our experienced technical team provides comprehensive support from product selection to after-sales service, ensuring optimal valve performance for your specific application.

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Balance Cage Type Control Valve