Pneumatic O-type ball valve

NegotiableUpdate on 03/06

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

The pneumatic cut-off ball valve produced by our company consists of a double (single) acting pneumatic piston actuator and a floating ball valve. It is also equipped with a travel limit switch, solenoid valve, pressure reducing valve, and 0.4-0.7MPa gas source to achieve switch operation, and sends two pairs of passive contact signals to indicate the switch of the valve. Pneumatic O-type cut-off ball valve is powered by compressed air, and the valve stem drives the valve core to rotate inside the valve body to achieve fully open and fully closed action. The cut-off ball valve can be divided into soft sealed valve seat and metal sealed valve seat according to its sealing performance.

Product Details

The pneumatic O-type cut-off ball valve produced by our company consists of a double (single) acting pneumatic piston actuator and a floating ball valve. It is also equipped with a travel limit switch, solenoid valve, pressure reducing valve, and 0.4-0.7MPa gas source to achieve switch operation, and sends two pairs of passive contact signals to indicate the switch of the valve. Pneumatic O-type cut-off ball valve is powered by compressed air, and the valve stem drives the valve core to rotate 90 ° inside the valve body to achieve a fully open to fully closed action. Pneumatic O-type cut-off ball valve can be divided into soft sealed valve seat and metal sealed valve seat according to its sealing performance. Soft sealed valve seats are suitable for applications with temperatures ≤ 260 ° C, while metal hard sealed valve seats are suitable for applications with temperatures ≤ 500 ° C. Pneumatic O-type cut-off ball valve has the characteristics of compact structure, small volume, reliable operation, good sealing, and easy maintenance. Pneumatic O-type cut-off ball valves are widely used in automatic control systems for industries such as petroleum, chemical, light industry, pharmaceuticals, and papermaking.

Main technical parameters of pneumatic cut-off ball valve

valve body

Valve body form	Direct Casting Ball Valve
Nominal Diameter	DN15～300mm
Nominal Pressure	PN1.6、2.5、4.0、6.4 MPa； ANSI 150、300LB ； JIS 10、20、30K
Flange Standard	JIS, ANSI, GB, JB, HG, etc
connection type	Flange type, threaded type, welded type
Valve cover form	monolithic
Cover type	Bolt compression type
sealing packing	V-shaped PTFE packing, impregnated PTFE packing, asbestos braided packing, flexible graphite

internal valve parts

Valve core form	O-ring valve core
flow characteristics	Quick opening feature

actuator

Model of actuator	GT, SR, ST, AT, AW series single and double acting pneumatic actuators
gas supply pressure	0.4～0.7MPa
air connection	G1/4'、G1/8'、G3/8'、G1/2'
ambient temperature	-30～+70℃
mode of action	Single acting actuator: gas closed type (B) - valve position open when gas is lost (FO); Pneumatic opening (K) - valve position closed when gas is lost (FC) Double acting actuator: gas closed type (B) - valve position maintenance during gas loss (FL); Pneumatic opening (K) - valve position maintenance during gas loss (FL)
Can be equipped with accessories	Positioner, solenoid valve, air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc

Note: For detailed actuator parameters, please visit the pneumatic actuator page for reference.

Pneumatic cut-off ball valve flow coefficient Kv

Nominal diameter DN (mm)	15	20	25	32	40	50	65	80	100	125	150	200	250	300
Rated flow coefficient KV	21	38	72	112	170	273	384	512	940	1452	2222	3589	5128	7359

Main performance specifications for pneumatic cut-off ball valves

Test pressure (MPa)	Nominal pressure (MPa)					Pressure level (class)			JIS(K)
Test pressure (MPa)	1.6	2.5	4.0	6.4	10.0	150	300	600	10K	20K
strength test	2.4	3.75	6.0	9.6	15.0	3.0	7.5	16.5	2.4	3.8
Sealing Test	1.76	2.75	4.4	7.04	11.0	2.2	5.5	12.1	1.5	2.8
airtightness test	0.4～0.7MPa

Main component materials of pneumatic O-type cut-off ball valve

1	left valve body	WCB、CF8、CF8M、CF3M
2	right valve body	WCB、CF8、CF8M、CF3M
3	valve seat	PEFE、PPL、304、316
4	sphere	2Cr13、304、316
5	valve stem	2Cr13、304、316
6	sealing packing	PTFE/flexible graphite
7	gland	WCB、CF8、CF8M、CF3M

Main appearance and connection dimensions of pneumatic cut-off ball valve

Nominal diameter DN (mm)	15	20	25	32	40	50	65	80	100	125	150	200	250	300
L	130	140	150	165	180	200	220	250	280	320	360	400	630	750
H	44.5	49	55	65	65	75	90	95	115	127	140	172.5	310	350
H1	Depending on the assigned executing agency
D	95	105	115	140	150	165	185	200	220	250	285	340	405	460
D1	65	75	85	100	110	125	145	160	180	210	240	295	355	410
D2	46	56	65	76	84	99	118	132	156	184	211	266	319	370
n-φd	4-14	4-14	4-14	4-18	4-18	4-18	4-18	8-18	8-18	8-18	8-22	12-22	12-26	12-26
A、A1	Depending on the required torque of the valve, the configuration model and external dimensions vary