Industrial-Grade Pneumatic Valve for Precision Flow Control

Product Overview

Featuring a floating ball structure, the valve achieves precise on-off control through pneumatic actuation, with compatible actuator models from the GT Series, AT Series, and AW Series. It supports both double-acting and single-acting (spring return) operation, adapting to different torque requirements and medium characteristics. The valve is available in soft sealing (F, N, P) and hard sealing (H, Y) options, with customizable structural length and connecting flange sizes per JB/T79 standards or user-specific demands. Its robust construction and corrosion-resistant materials make it suitable for handling a wide range of media in pressure ratings of PN16 (1.6MPa), PN25 (2.5MPa), and PN40 (4.0MPa), with nominal diameters ranging from 15mm to 200mm.

Technique Norm Table (Design Basis & GB Standard)

Design Basis/Design Standard	GB Standard
Design Standard	GB/12237
Face-to-Face Dimension	GB/12221
Connecting Flange Size	GB/9113, JB/T79
Test & Inspection	GB/T13927, JB/T9092

Main Parts Materials Table

No.	Nominal Parts	Material
-	Right Valve Body	WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti
2	Nut	35#, 1Cr18Ni9Ti
3	Gasket	PTFE, Graphite metal composite pad
-	Screw	35#, 1Cr18Ni9Ti
5	Body	WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti
-	Seat	PTFE, Nylon, PPL (Para-phenylene Polymers), Hard Alloy
7	Ball	1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti
-	Stem	1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti
9	Gasket	1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti
10	Packing	PTFE, Flexible Graphite
11	Bushing	PTFE Composite bearings
12	Gland	WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti
13	Screw	35#, 1Cr18Ni9Ti
14	Screw	35#, 1Cr18Ni9Ti
15	Connecting Yoke	1Cr18Ni9Ti
16	Screw	35#, 1Cr18Ni9Ti
17	Connecting Set	35#, 1Cr18Ni9Ti
18	Pneumatic Device	GT Series, AT Series, AW Series
19	Location Indicator	Plastic

Note: The structural length and connecting flange size of ball valve series can be designed and manufactured as per user requirements.

Main Outline and Connecting Flange Size Table (Q641F(N, P, H, Y), PN16 (1.6MPa))

Nominal Diameter	Outline Size	Outline Size	Outline Size	Outline Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Actuator Model
15	130	141/159	71/83	204/235	95	65	46	14	2	4-φ14	AT050D/AT053S
20	140	141/159	71/83	209/240	105	75	-	16	2	4-φ14	AT050D/AT053S
25	150	159/211	83/96	214/256	115	85	65	16	2	4-φ14	AT063D/AT075S
32	165	159/248	83/107	257/277	140	100	76	-	-	4-φ18	AT063D/AT075S
40	180	-	96/107	274/292	150	110	84	18	3	4-φ18	AT075D/AT088S
50	200	248/269	107/123	290/300	165	125	99	20	3	4-φ18	AT088D/AT100S
65	220	248/315	107/141	310/335	185	145	118	20	3	4-φ18	AT088D/AT115S
80	250	269/345	123/152	346/368	200	160	132	20	3	8-φ18	AT100D/AT125S
100	280	345/409	152/172	378/410	220	180	156	22	3	8-φ18	AT125D/AT145S
125	320	400/550	172/215	425/450	250	210	184	22	3	8-φ18	AT145D/AT190S
150	360	560/600	215/240	468/531	285	240	211	24	3	8-φ22	AT190D/AT210S
200	400	600/633	240/282	583/618	340	235	202	24	3	12-φ22	AT240D/AT240S

Note:

The structural length and connecting flange size of ball valve series can be designed and manufactured as per JB/T79 standard or user requirements.

Data XXX/XXX represent respectively the double-acting/single-acting (spring reposition) pneumatic actuator.

According to different valve torques and operating media, the suitable actuator models may vary, and the relevant dimensions will change accordingly.

The above actuator configurations and data are all for soft-seal (F, N, P) valves; please consult our company for the configuration and data of hard-seal valves.

Main Outline and Connecting Flange Size Table (Q641F(N, P, H, Y), PN25 (2.5MPa))

Nominal Diameter	Outline Size	Outline Size	Outline Size	Outline Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Actuator Model
15	130	141/159	71/83	204/235	95	65	46	14	2	4-φ14	AT050D/AT063S
20	140	141/159	71/83	209/240	105	-	56	16	-	4-φ14	-
25	150	159/211	83/95	257/265	115	85	65	16	2	4-φ14	AT063D/AT075S
32	165	211/248	95/107	269/287	140	100	76	18	-	4-φ18	AT075D/AT088S
40	180	248/269	96/107	282/292	150	110	84	18	3	4-φ18	AT075D/AT088S
50	-	248/345	107/123	290/325	165	125	99	20	3	4-φ18	AT088D/AT100S
65	220	269/345	107/152	310/357	185	145	116	22	3	8-φ18	AT088D/AT125S
80	250	345/409	152/172	346/368	200	160	132	24	3	8-φ18	AT125D/AT145S
100	280	345/438	152/187	418/443	235	190	156	24	3	8-φ22	AT125D/AT160S
125	320	438/550	187/215	460/503	270	220	184	26	3	8-φ28	AT160D/AT190S
150	360	550/600	215/240	488/563	300	250	211	28	3	8-φ26	AT190D/AT210S
200	400	633/730	262/330	583/618	360	310	274	30	3	12-φ28	AT240D/AT270S

Note: Same as the notes in the PN16 table above.

Main Outline and Connecting Flange Size Table (Q641F(N, P, H, Y), PN40 (4.0MPa))

Nominal Diameter	Outline Size	Outline Size	Outline Size	Outline Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Connecting Size	Actuator Model
15	130	141/159	71/83	204/235	95	65	46	40×4	14	2	4-φ14	AT050D/AT063S
20	140	159/211	83/95	240/252	105	75	56	51×4	16	-	4-φ14	AT050D/AT075S
25	150	211/248	96/107	257/265	115	85	105	58×4	16	2	4-φ14	AT075D/AT088S
32	180	211/248	95/107	269/287	-	100	76	66×4	18	3	4-φ18	AT075D/AT088S
40	200	248/269	107/123	-	150	100	84	76×4	18	3	4-φ18	AT088D/AT100S
50	220	248/315	-	300/325	165	125	99	88×4	-	-	4-φ18	AT088D/AT115S
65	250	269/345	123/152	335/357	185	145	118	110×4	22	-	8-φ18	AT100D/AT125S
80	280	-	152/172	368/400	200	160	-	121×4	24	-	8-φ18	AT125D/AT145S
100	320	400/438	172/187	418/506	235	190	156	150×4.5	24	3	8-φ22	AT145D/AT160S
125	400	550/600	215/240	445/548	270	-	184	176×4.5	26	-	8-φ26	AT190D/AT210S
150	400	600/633	215/262	563/596	300	250	211	204×4.5	28	3	8-φ26	AT240D/AT240S
200	502	730	330	636/666	375	320	284	260×4.5	34	-	12-φ30	AT270D

Note: Same as the notes in the PN16 table above.

Characteristic Advantages

High-Precision Flow Control

The Pneumatic Floating Ball Valve adopts a precision-engineered floating ball design, ensuring tight sealing and accurate flow regulation. The matching pneumatic actuators respond quickly to control signals, enabling efficient on-off operations even in high-pressure and high-flow environments.

Premium Material Selection

Key components such as the valve body, ball, and stem are crafted from high-quality materials like WCB, 1Cr18Ni9Ti, and 1Cr18Ni12Mo2Ti, offering excellent corrosion resistance and wear resistance. Sealing materials including PTFE and flexible graphite guarantee leak-proof performance and long service life.

Versatile Actuator Compatibility

With support for GT, AT, and AW Series actuators, the valve can be configured for double-acting or single-acting (spring return) operation. This versatility allows it to adapt to various torque requirements and medium types, making it suitable for both general and harsh industrial conditions.

Customizable Dimensions

The structural length and connecting flange size can be tailored to JB/T79 standards or user-specific requirements, ensuring seamless integration with existing pipeline systems. This flexibility reduces installation complexity and improves project adaptability.

Easy Installation & Maintenance

The valve’s modular design and standardized connecting parts simplify installation and maintenance. The plastic position indicator provides clear operational status feedback, while the durable packing and gasket materials minimize maintenance frequency and costs.

Wide Pressure & Diameter Range

Covering pressure ratings from PN16 to PN40 and nominal diameters from 15mm to 200mm, the Pneumatic Floating Ball Valve meets the needs of diverse industrial applications, from small-scale pipelines to large-scale industrial systems.

Application Areas

Petroleum & Chemical Industry

Ideal for controlling the flow of crude oil, chemicals, and petrochemical products. The corrosion-resistant materials and tight sealing performance ensure safe operation in corrosive and high-pressure environments.

Water Treatment & Municipal Engineering

Suitable for water supply, sewage treatment, and pipeline networks. The valve’s reliable sealing prevents leakage, while its durable construction withstands long-term exposure to water and wastewater.

Power Generation Industry

Used in thermal power plants and nuclear power facilities to control steam, cooling water, and other media. The high-temperature and high-pressure resistance ensures stable performance in extreme operating conditions.

FAQ

What pressure ratings does the Pneumatic Floating Ball Valve support?

The valve is available in three pressure ratings: PN16 (1.6MPa), PN25 (2.5MPa), and PN40 (4.0MPa), covering most industrial pressure requirements.

Can the valve be customized for specific pipeline sizes?

Yes. The structural length and connecting flange size can be designed and manufactured according to JB/T79 standards or user-specific requirements to match your pipeline system.

What is the difference between double-acting and single-acting actuators?

Double-acting actuators use air pressure for both opening and closing, while single-acting (spring return) actuators use air pressure for one direction and a spring for the return, ensuring fail-safe operation in case of air supply failure.