Series 7250-PA

Pneumatic Actuated

 style 7250 pneumatic actuated pinch valve
Sizes 1" to 24" diameters
FEATURES & BENEFITS
  • Low Cost, Pinch Valve Design
  • Open, Lightweight Frame Design
  • Designed for On/Off Service
  • Closure Positions Clearly Visible
  • All Cast Members are Malleable or Ductile Iron
  • Available in Longer or Shorter Lengths
  • Long Lasting Compression Molded Sleeve is the Only Part Exposed to Process Fluid, Eliminating the Need for Expensive Body Alloys
  • Full Range of Elastomers and Reinforcements Available to Resist Abrasion, Corrosion, and Even the Most Demanding Process Conditions
  • Full Port Eliminates Clogging and Turbulence While Minimizing Pressure Drop
  • Sleeve Flexing Eliminates Scaling or Binding
  • Drop Tight Bi-Directional Closure
  • No Packing, Gaskets or Seals to Maintain
  • NFPA Standard Pneumatic Cylinder Mounting
  • Fail Open or Fail Closed Options with Air or Coil Spring Action
  • Dual Pinching Ductile Iron Mechanism Closes Sleeve on Center
  • Stainless Steel Stem with Easy External Stroke Adjustment if the Sleeve Wears
  • Easy Installation with Simple Inexpensive Sleeve Replacement
  • High Cycle Life
  • Factory Assembled, Calibrated, and Tested Prior to Shipment

 
APPLICATIONS

Flex-Valve’s Style 7250-PA is ideally suited for automated on/off control of abrasive, corrosive, viscous, or scaling fluids such as waste water, mineral slurries, cement, limestone, fly ash, pulp stock, powders and pellets as well as many other chemicals and difficult to handle materials. Our engineers are available to review your requirements or to conduct an on-site inspection of your application. We will recommend one of our designs or develop one specific to your requirements.

VARIATIONS

Flex-Valve’s Style 7250-PA options include: positive opening tabs, limit switches, fail safe system, special finishes, manual handwheel override, solenoid valves, filter/ regulator, and many other custom features

STYLE 7250-PA TECHNICAL ADVANTAGES
    • Flanges Drilled for ANSI 125/150 lbs.
    • Full Rubber Flange, No Gaskets Required
    • Sleeves Available in a Wide Variety of Elastomers Including Pure Gum Rubber, EPDM, Neoprene, Butyl, Nitrile, Hypalon, Viton®*, Teflon®, Food Grades, and More
    • Factory Tested and Calibrated

Pneumatic Actuator

  • On/Off Service Includes:

    - Actuator Sizing is Based on Valve Thrust and Available 80 psi Plant Air
    - NFPA Standard Mounting Tested for Smooth Cycling and Leak Proof Sealing
    - Extremely Durable Steel or Aluminum Construction
    - Corrosion Resistant
    - Easy Tie Rod Mounting of Actuator to Valve

  • Optional Features:

    - Manual Handwheel Override
    - Stainless Steel Piston Rods and Tubes
    - Viton®* Seals
    - Special Materials for Hazardous Environments
    - Epoxy or Special Paints

 
All Dimensions expressed in inches
Valve Size
1
1-1/2
2
2-1/12
3
4
5
6
8
A
4
6
8
10
12
16
20
24
32
B
13
14
16
19
20
36
23
25
30
C
2-1/4
2-1/2
3
3-1/2
3-7/8
4-1/2
5
5-1/2
7-15/16
D
6
7
8-7/16
9-5/16
10-3/4
12-1/4
14-1/4
15-7/8
20-1/8
Max. Pressure (PSIG)
150
150
150
150
150
150
150
150
125
Approx. Weight (Lbs)
10
15
23
30
47
65
135
180
270

 

 

 

 

 

 

 

All Dimensions expressed in inches
Valve Size
10
12
14
16
18
20
24
A
40
48
42
48
54
60
72
B
39
46
55
64
77
86
100
C
8
9-1/2
10-1/2
11-3/4
22-1/2
23-3/4
16
D
27-3/4
27-3/4
30-1/2
33-1/2
43
45
48
Max. Pressure (PSIG)
100
100
75
50
50
50
50
Approx. Weight (Lbs.)
300
550
700
900
1000
1200
1390

Notes:
1) For full product specifications and installation instructions see SPEC-7250-PA-1 and ININ-7250-PA-1 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.
4) For horizontal mounting of actuator, a sliding support is required, and it is recommended to consult the factory.

Valve Data Sheet

 

* A registered trademark of DuPont Performance Elastomers