Series 6300

Pneumatic Actuated

 series 6300 pneumatic actuated pinch valve
Sizes 1" to 14" diameters
This series features a diaphragm actuator that is proprietary to the Flex-Valve, resulting in an economically priced valve. This actuator is sized to permit the use of lower operating air pressures. For higher line pressures, larger diaphragm assemblies are available for additional thrust.

The Air-to-Close is for service where the valve is normally in the open position. Air pressure applied to the area above the diaphragm will close the valve in opposition to the force of the line pressure in the valve sleeve. The line pressure will assist in opening the sleeve.

The Air-to-Open type is used when applications require a normally closed valve. The area above the diaphragm is pressurized through a check valve, with the required air pressure to keep the valve closed. The valve is opened by applying higher air pressure below the diaphragm to open the valve. 

The most popular accessory required on a Series 6300 Pinch Valve is the positioner which is mandatory for automatic control applications. This allows the diaphragm actuated valve to be controlled by a 3-15 PSI instrument air signal for proportional control of the valve port opening. The I/P transducer can be used along with a positioner allowing the valve to be controlled by a 4-20 mA instrument signal. The positioner is compactly mounted with no exposed mechanical parts to conform with the overall design of the Flex-Valve.

FEATURES & BENEFITS

  • Pre-pinched Port (near linear control) 
  • Air-to-Open - Fail Closed 
  • Air-to-Close - Fail Open 
  • Flanges Drilled for ANSI 125/150 lb.
    (tapped in sizes 1 to 2-1/2")     
  • Standard and Heavy Duty (6300/6320) 
  • Completely Enclosed 
  • Can be Installed in Any Position 
  • Positive Opening Device if Needed 
  • Positioner Control with 3-15 PSI Instrument Air Signal 
  • Positioner and I/P Transducer Control with 4-20 mA Instrument Signal 
  • Limit Switches and Other Optional Features Available

All dimensions expressed in inches
Valve Size
1
1-1/2
2
2-1/2
3
4
A
6
6
8
10
12
16
B Standard
9-5/8
9-7/8
11
12-7/8
13-1/4
14-5/8
B Heavy
9-5/8
9-7/8
12-1/4
13-3/4
14-1/8
15-1/2
C Standard
8-3/4
8-3/4
8-3/4
11-1/8
11-1/8
11-1/8
C Heavy
8-3/4
8-3/4
11-1/8
15-1/8
15-1/8
15-1/8
D
5-7/8
6-3/4
15-1/8
8-1/2
8-3/4
10-5/8
E
4-1/4
5
6
7
7-1/2
9
Approx. Wt. (Lbs)
Std. Duty
Aluminum
13-1/2
18-1/2
23-1/2
36
46
61
Cast Iron
23-1/2
43-1/2
53-1/2
76
86
131

All dimensions expressed in inches
Valve Size
5
6
8
10
12
14*
A
20
24
32
40
48
42
B Standard
17-1/2
20-1/8
22-5/8
30-3/8
32-3/4
34-5/16
B Heavy
19-3/4
26-1/8
28-1/2
30-3/8
32-3/4
34-5/16
C Standard
15-1/8
21-3/4
21-3/4
29
29
29
C Heavy
21-3/4
29
29
29
29
29
D
12-5/8
14-11/16
18-1/8
21-7/8
25-3/4
27-1/2
E
10
11
13-1/2
16
19
21
Approx. Wt. (Lbs)
Std. Duty
Aluminum
101
178
238
445
550
1000
Cast Iron
186
298
358
535
750
1200
*14 size has a 13-1/4" ID and full face flange will match schedule 40 pipe.

Standard Duty Air to Close (A-T-C) 6300,6301 Air to Open (A-T-O) 6305,6306
Heavy Duty Air to Close (A-T-C) 6320,6321 Air to Open (A-T-O) 6325,6326
Maximum Pressure (PSIG)
Configuration
Series
1
1-1/2
2
2-1/2
3
4
A-T-C Standard
6300
100
100
100
100
75
75
A-T-C Heavy
6320
275
250
200
175
175
150
A-T-O Standard
6305
100
100
100
100
75
75
A-T-O Heavy
6325
275
250
200
175
175
150
A-T-C Standard**
6301
100
100
100
100
75
75
A-T-C Heavy**
6321
275
250
200
175
175
150
A-T-O Standard**
6306
100
100
100
100
75
75
A-T-O Heavy**
6326
275
250
200
175
175
150
**Furnished with postioner for modulating service.

Standard Duty Air to Close (A-T-C) 6300,6301 Air to Open (A-T-O) 6305,6306
Heavy Duty Air to Close (A-T-C) 6320,6321 Air to Open (A-T-O) 6325,6326
Maximum Pressure (PSIG)
Configuration
Series
5
6
8
10
12
14
A-T-C Standard
6300
65
65
65
65
65
50
A-T-C Heavy
6320
125
125
125
100
100
75
A-T-O Standard
6305
65
65
65
65
65
50
A-T-O Heavy
6325
125
125
125
100
100
50
A-T-C Standard**
6301
65
65
65
65
65
50
A-T-C Heavy**
6321
125
125
125
100
100
75
A-T-O Standard**
6306
65
65
65
65
65
50
A-T-O Heavy**
6326
125
125
125
100
65
50
**Furnished with postioner for modulating service.

Notes:
1) For full product specifications and installation instructions see SPEC 6300 and ININ 6300 respectively.
2) For sleeve sizing for optimal flow control, consult the factory or see Flexible Valve’s Technical Manual.
3) Actuator size will vary with service conditions and application effecting stated weights and dimensions.

Valve Data Sheet