Automation & Accessories
Seat Options
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Swing Thru | ![]() |
Angle |
| Suitable for most applications, this type is furnished as standard. Good for clean or dirty service, any temperature range. Clearance depends upon temperature. (Available in all sizes.) | Clockwise to close is standard. Suitable for minimum leakage where service conditions are clean, and temperature is under 500°F, (Available up to 30 inch sizes.) | ||
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Metal Step | ![]() |
Tadpole Step |
| Clockwise to close is standard. Suitable for minimum leakage requirements above 500°F, provided service conditions are clean. (Available in all sizes.) | Clockwise to close is standard. Suitable for minimum leakage requirements up to 1200°F, depending on various materials available, and provided service conditions are clean. Slightly better shut-off than metal step seat. (Available in sizes starting at 6" and up.) |
More Accessories offered by PDC:
- PDC Combination 10-Position
Positive Locking &
Infinite Throttling Lever - PDC Automation Packages
- PDC 3-Way Assemblies for Metal
or Rubber Seated
125-150 lb. Flanging - PDC Universal Brackets & Linkages
- Types of Stuffing Boxes
- Seat Options
- Shaft Options
- Metal Seat Materials Options
Additional Information
- Valve Sizing & Engineering Data
- Standard Leak Rate
- Cv Data for Standard PDC Swing Thru Valves
- Combined Torque
Coraopolis, PA 15108
ph: 724.695.3440 toll free (US): 888-PDC-4070 fax: 724.695.8635
email: Sales@pdcvalve.com




