Description

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1 Buy Pneumatic Flanged Ball Valve Q647H WCB/CF8 Body Class PN16/25

1.1 Technical Specifications

1.2 Main Component Materials and Applicable Media

1.3 Pneumatic Flanged Three-Way Ball Valve – Main Dimensions and Flange Sizes (Unit: mm)

1.4 Pneumatic Threaded Three-Way Ball Valve – Main Dimensions and Connection Sizes (Unit: mm)

1.5 FAQ

Buy Pneumatic Flanged Ball Valve Q647H WCB/CF8 Body Class PN16/25

The Pneumatic Fixed Type Metal Seated Ball Valve from VALVEHU is a robust industrial solution designed for high-pressure and high-temperature applications where durability, sealing performance, and automation are essential. Engineered for use in pipelines that transport high-viscosity, fibrous, or particulate media, this flanged ball valve features a fixed ball design that maintains alignment under stress and prevents seat deformation during operation.

With pressure ratings of PN1.6MPa and PN2.5MPa, and body material options including WCB, 304 (CF8), 316 (CF8M), and 316L (CF3M), this valve ensures corrosion resistance and mechanical strength for demanding environments. The valve’s internal components, such as the 2Cr13 or 316 stainless steel ball and stem, are hardened or nitrided to increase lifespan and wear resistance. Sealing is achieved through a V-type PTFE packing or soft graphite, offering both high sealing integrity and chemical compatibility.

This fixed ball valve is pneumatically actuated, responding to 0.4–0.7MPa air pressure or 4–20mA control signal, enabling both on/off and throttling functions in automated systems. It is ideal for chemical plants, oil and gas systems, thermal power units, paper mills, and other process control setups that require zero leakage and tight shut-off.

With a compact footprint and customizable material configuration, this product balances strength and precision. The combination of metal seal and high-performance pneumatic actuator ensures long service life even in tough conditions.

To explore this model or other control valves suitable for your application, get in touch with our experts at VALVEHU in China. We’re here to help you select the optimal solution for your flow control needs.

Technical Specifications

Valve Type: Pneumatic Fixed Type Metal Seated Ball Valve
Body Material; WCB / CF8 / CF8M / CF3M
Ball Material: 2Cr13 or Stainless Steel 304/316/316L
Stem Material: 2Cr13 or Stainless Steel 304/316/316L
Seal Type: Metal seated with hardened stainless or V-type PTFE
Pressure Rating: PN1.6MPa and PN2.5MPa
Connection Type: Flanged
Operation Method: Pneumatic actuator, double-acting or spring-return
Control Signal: 4–20mA or air pressure 0.4–0.7MPa
Application Range: High-viscosity, fiber-containing, corrosive or thermal media
Applicable Industries: Chemical, oil & gas, textile, paper, energy

Main Component Materials and Applicable Media

Component Name	WCB	304 (CF8)	316 (CF8M)	316L (CF3M)
Valve Body	WCB	304 (CF8)	316 (CF8M)	316L (CF3M)
Ball	2Cr13 + Nitrided	304	316	316L
Stem	2Cr13	304	316	316L
Seat Material	PTFE	PPL	Polyphenylene	Flexible Graphite
Media Suitability	Water, gas, steam, oil	Sulfuric acid and similar media	Acetic acid and similar	Urea and alkaline media

Pneumatic Flanged Three-Way Ball Valve – Main Dimensions and Flange Sizes (Unit: mm)

Nominal Diameter DN (mm)	L	L1	H	A	PN1.6MPa Flange Size D	D1	D2	n–Φd	PN2.5MPa Flange Size D	D1	D2	n–Φd	PN4.0MPa Flange Size D	D1	D2	n–Φd	PN6.4MPa Flange Size D	D1	D2	n–Φd
15	150	75	185	140	95	65	46	4–14	95	65	46	4–14	95	65	40	4–14	105	75	40	4–14
20	150	75	191	140	105	75	56	4–14	105	75	56	4–14	105	75	51	4–14	130	90	51	4–18
25	180	90	193	140	115	85	65	4–14	115	85	65	4–14	115	85	58	4–14	140	100	58	4–18
32	200	100	212	164	140	100	76	4–18	140	100	76	4–18	140	100	66	4–18	155	110	66	4–22
40	220	110	217	164	150	110	84	4–18	150	110	84	4–18	150	110	76	4–18	170	125	76	4–22
50	240	120	260	190	165	125	99	4–18	165	125	99	4–18	165	125	88	4–18	180	140	88	4–22
65	260	130	293	210	185	145	118	4–18	185	145	118	4–18	185	145	104	8–18	200	160	110	8–26
80	280	140	323	247	200	160	132	8–18	200	160	132	8–18	200	160	132	8–22	215	170	132	8–26
100	320	160	382	276	220	180	156	8–18	235	190	156	8–22	235	190	150	8–22	250	200	150	8–30
125	380	190	468	348	250	210	184	8–18	270	220	184	8–26	270	220	176	8–26	295	240	176	8–30
150	440	220	510	378	285	240	211	8–22	300	250	211	8–26	300	250	204	8–26	345	280	204	8–33
200	550	275	655	524	340	295	266	12–22	360	310	274	12–26	375	320	260	12–30	415	345	260	12–36

Pneumatic Threaded Three-Way Ball Valve – Main Dimensions and Connection Sizes (Unit: mm)

Nominal Diameter DN (mm)	Thread Size inch (G)	L	L1	H	A
10	3/8	60	30	57	110
15	1/2	72	36	68	110
20	3/4	85	42	70	110
25	1	91	46	80	140
32	1 1/4	110	55	85	140
40	1 1/2	122	61	100	180
50	2	145	72	110	180

FAQ

What are the advantages of a fixed ball design in this valve?
Fixed balls prevent seat deformation under pressure, ensuring better sealing and durability.

Is this valve suitable for high-temperature steam?
Yes, the metal seat and stainless internals make it ideal for steam and thermal fluid systems.

What control methods can be used with this valve?
It supports 4–20mA signal or 0.4–0.7MPa compressed air for automated control.

Which industries benefit most from this valve?
Industries like chemical processing, power generation, pulp and paper, and refining use it extensively.

Can the sealing materials be customized?
Yes, you can choose between metal-seated or V-type PTFE with graphite, depending on your process media.