Pneumatic Flange Ball Valve

Pneumatic flanged ball valves use a quarter-turn (0–90°) pneumatic actuator to rotate the ball for open/close operation. They provide leak-tight shutoff and low pressure drop, are compatible with a wide range of media, and are widely used in industrial process control — including petrochemical and metallurgical applications.

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Product Introduction

Flanged ball valves are quarter-turn rotary valves with a 0–90° operating angle. They combine leak-tight shutoff, high flow capacity, minimal pressure drop, compact construction, easy maintenance, and long service life. The full-bore flow path matches the pipeline ID, allowing media to pass through with negligible pressure loss.

Available with pneumatic or electric actuation. Electric units are offered in on/off (two-position) and modulating types, suited to applications requiring tight shutoff. Beyond gas, liquid, and steam, they also handle wastewater and fibrous or solids-laden media.

Typical industries: oil & gas, chemical, metallurgical, light industrial, pulp & paper, power generation, refrigeration, and other process sectors.

Features

Leak-tight shutoff — Dual-seat (floating ball) design delivers bubble-tight, zero-leakage isolation of the media.
Extended service life — PTFE seats are self-lubricating and low-friction against the ball, minimizing wear and extending cycle life.
Flexible flow control — Ball ports in full-bore (O-type), V-type, and rectangular configurations adapt to both on/off and throttling duties.

Basic Parameters

Nominal Diameter (DN): DN15 - DN200

Operating Power Supply: AC110V, AC220V, AC380V, DC24V

Medium Temperature: -20°C to 350°C (Special sealing for >200°C)

Working Pressure: PN1.0 ~ 10.0MPa

Control Method: Modulating or On/Off Control

Protection Class: IP67

Connection & Sealing

Connection Type: Flange Type

Sealing Type: Elastic Seal, High-Temperature Resistant PPS (Polyphenylene Sulfide), Hard Alloy & Industrial Ceramics

Leakage Rate: Complies with ANSI B16.104 Class 5 Standard

Material Specifications

Body & Internal Components

Body Material: A105, F304, F316, WCB, FZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8, CF8M, CF3M

Ball Material: SUS304, SUS316

Sealing Components

Seat Material: PTFE (Normal Temperature) Special PPL (High Temperature) Metal Seal (High Temperature)

Applicable Medium

Water
Petroleum
Nitric Acid
Acetic Acid
Viscous Fluids
Slurries
Strong Oxidizing Media

Standards Compliance

Design & Manufacturing: GB 12237-2007, API 6D

Flange Standards:

- JB/T 79-2015 - GB/T 9124.1-2019 - GB/T 9124.2-2019 - ANSI B16.5 - JIS B2239

Face-to-Face Dimension: GB 12221-2005

Inspection Standard: API 598

Main Parameters

Power Supply	AC110V, AC220V, AC380V, DC24V
Nominal Diameter	DN15-200
Medium Temperature	-20℃ to +350℃ (+200℃ for special seal)
Working Pressure	PN1.0~10.0MPa
Control Mode	Regulation or On-Off Control
Pneumatic Actuation	Single-acting (with spring return) or Double-acting
Connection Type	Flanged
Body Material	A105, F304, F316, WCB, FZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8, CF8M, CF3M
Seat Material	PTFE (normal temperature), Special PPL (high temperature), Metal seal (high temperature)
Leakage Class	ANSI B16.104 Class 5
Sealing Type	Elastic seal, High temperature resistant polyphenylene, Hard alloy, Industrial ceramic
Applicable Medium	Water, Petroleum, Nitric acid, Acetic acid, Viscous fluid, Slurry, Strong oxidizing medium
Protection Grade	IP67
Design and Manufacturing Standard	GB12237-2021, API 6D
Flange Standard	JB/T 79-2015, GB/T 9124.1-2019, GB/T 9124.2-2019, ANSI B16.5, JIS B2239
Face-to-Face Dimension	GB12221-2005
Inspection Standard	API 598

Dimension Drawing

1.Installation Dimension Drawing of Pneumatic Flanged Ball Valve (Standard)

Nominal Diameter (DN)）		L	D	K	D1	n-Φd	b	i	Double Acting			Single Acting
									H	W1	W2	H	W1	W2

mm	in
15	1/2″	130	95	65	45	4-Φ14	14	2	195	147	72	195	147	72
20	3/4″	130	105	75	55	4-Φ14	16	2	197	147	72	213	168	83
25	1″	142	113	85	65	4-Φ14	18	2	221	168	83	233	184	95
32	1 1/4″	165	140	100	78	4-Φ18	18	2	235	168	83	256	204	103
40	1 1/2″	165	150	110	85	4-Φ18	18	2	248	184	95	265	262	109
50	2″	203	165	125	100	4-Φ18	20	2	271	204	103	295	268	122
65	2 1/2″	222	185	145	120	8-Φ18	20	2	325	262	109	383	301	142
80	3″	241	200	160	135	8-Φ18	21	2	345	268	122	404	390	152
100	4″	305	220	180	155	8-Φ18	22	2	406	301	142	448	458	174
125	5″	356	250	210	184	8-Φ18	22	3	459	301	142	501	458	174
150	6″	394	285	240	210	8-Φ23	24	3	486	390	152	544	525	206
200	8″	457	340	295	265	12-Φ23	26	3	576	458	174	634	532	226

Note: The suitable actuator model may vary for pneumatic valves depending on the service medium, valve torque and control method, resulting in corresponding changes to relevant dimensions.