Standard Temperature Service
By 'matching the inspection port to your process temperature', you can protect the integrity of the system from failure due to the loss of the insulation core.
As with all inspection ports, we recommend that after installation, some type of insulation material is inserted inside the 'inspection chamber' as the final step. In the event that the insulation material is lost or discarded during the inspection process, the back side of the inspection port will be subjected to the heat being radiated off of the surface of the pipe or vessel. If the inspection port is not rated for that temperature, heat failure of the stopper is possible. Once stopper failure occurs, water and air can penetrate into the inspection chamber and form surface corrision that can lead to expensive repair costs or worse, critical failure.
Our inspection ports were specifically designed to protect against port failure from just such an event.
By using one of the inspection ports shown below within the listed operating temperatures, if the insulation material is lost or discarded, the integrity of the system is protected. We recommend you view our 'Inspection Ports' page if you haven't already for more information about the advantages of using APF's inspection ports over the competition.
Please click one of the links below when working with other operating temperatures.
- Designed for use when your operating temperature is slightly above the 500°F threshold of our standard temperature inspection port
- The higher temperature is achieved by adding aluminum to our standard temperature port to give the silicone plug an added heat reflective property
- A hole saw is NOT required for installation, this prevents possible damage to the base metal from the hole saw pilot bit or accidental damage to hidden trace lines
- The inspector is shielded from the cut edge of the jacketing by the center draw of the flange, this allows you to comply with OSHA safety requirements
- Silicone applied under the flange is what provides the primary holding and sealing capabilities for the flange to the jacketing surface
- The elasticity of the large volume of silicone under the flange is what helps maintain the airtight and watertight seal during any thermal expansion or contraction of the jacketing material
- When installed per manufactures recommendation, a permanent airtight and watertight seal will be achieved
- 1/2" banding slots are provided in the flange to allow the inspection port to be banded in place when required
- Based on the application needed, all flat flanges can be field contoured to conform to a smaller radius
- The silicone plug is designed with a convex bottom to provide long-term sealing pressure against the sidewall of the flange to compensate for any shrinkage from aging
- Optional Separation Sleeve for material separation is available
- Optional Stainless Steel Flange is available for use in corrosive environments
- Optional Stainless Steel Sleeve is also available
| Part Number | Description | Working Hole Size for Inspectors | Minimum Temp Range | Max Temp Range | Flange Material | Stopper Material | |
| 1121402 | 1 3/4" APF Assembly, Aluminum Contoured Flange, Silver Silicone Access Plug w/Copper Sleeve | 1 3/4" | 33°F | 600°F | Aluminum | Silicone | |
| 1111402 | 1 3/4" APF Assembly, Aluminum Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 1 3/4" | 33°F | 600°F | Aluminum | Silicone | |
| 1111403 | 2 1/2" APF Assembly, Aluminum Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 2 1/2" | 33°F | 600°F | Aluminum | Silicone | |
| 1111404 | 4" APF Assembly, Aluminum Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 4" | 33°F | 600°F | Aluminum | Silicone | |
| 1111405 | 5" APF Assembly, Aluminum Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 5" | 33°F | 600°F | Aluminum | Silicone | |
| 1111406 | 2 1/2" X 12" APF Assembly, Aluminum Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 2 1/2" X 12" | 33°F | 600°F | Aluminum | Silicone | |
| 1221402 | 1 3/4" APF Assembly, Stainless Steel Contoured Flange, Silver Silicone Access Plug w/Copper Sleeve | 1 3/4" | 33°F | 600°F | Stainless | Silicone | |
| 1211402 | 1 3/4" APF Assembly, Stainless Steel Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 1 3/4" | 33°F | 600°F | Stainless | Silicone | |
| 1211403 | 2 1/2" APF Assembly, Stainless Steel Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 2 1/2" | 33°F | 600°F | Stainless | Silicone | |
| 1211404 | 4" APF Assembly, Stainless Steel Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 4" | 33°F | 500°F | Stainless | Silicone | |
| 1211405 | 5" APF Assembly, Stainless Steel Flat Flange, Silver Silicone Access Plug w/Copper Sleeve | 5" | 33°F | 500°F | Stainless | Silicone |
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