Introduction to Header Plugs
Header Plug & Shoulder Plugs for Heat Exchanger
Shoulder plug or header plug are made for plugs type header boxes in air cooled heat exchangers or fin fan air coolers. A shoulder plugs and gasket are located opposite each tube which allows access for inspection and cleaning of individual tubes. Spare plugs and gaskets may be needed to replace originals during routine maintenance or used to plug leaking tubes.
Header Plugs are installed in upstream offshore/onshore oil production and initial processing installations. Header Plugs are made from Stainless Steel 316 , SS 304 ,Duplex ,Super Duplex,Carbon Steel,Brass, Inconel ,Hastelloy, Titanium and Monel . They are also available in various Alloy Steel .
Why buy from FAV ?
1) Available in material of your choice
2) Customization possible to suit your exact Heat Exchanger Needs
3) Faster Delivery
4) Material Test Report available
5) Gasket available in Soft Iron as we as other grades
Datasheet for Header Plug / Shoulder Plug /UNF Plug
| Header Plug / Shoulder Plug Sizing Chart | ||||
| B | A | Hex | ||
| Tube OD | Plug Diameter | UNF Thread | Under Head | Size |
| 5/8" | 3/4" | 16 | 3/4" | 1" |
| 7/8" | ||||
| 1" | ||||
| 1" | 1 1/8" | 12 | 3/4" | 1 3/8" |
| 7/8" | ||||
| 1" | ||||
| 1 1/8" | ||||
| 1 1/4" | ||||
| 1 3/8" | ||||
| 1 1/2" | ||||
| 1 1/4" | 1 3/8" | 12 | 3/4" | 1 5/8" |
| 7/8" | ||||
| 1 1/8" | ||||
| 1 1/4" | ||||
| 1 1/2" | ||||
| 1 1/2" | 1 5/8" | 12 | 1" | 1 7/8" |
| 1 1/8" | ||||
| 1 1/4" | ||||
| 1 3/8" | ||||
| 1 1/2" | ||||
| 2" | 2 1/8" | 12 | 1 1/4" | 2 3/8" |
Required Torque to set Header Plug
| Plug Diameter | C.S. Plug with Soft Iron Gasket | SS and Alloy Gaskets | ||
| Target Torque (ft lbs) | Max Torque (ft lbs) | Target Torque (ft lbs) | Max Torque (ft lbs) | |
| 1-1/8" | 250 | 400 | 400 | 550 |
| 1-1/4" | 300 | 450 | 425 | 600 |
| 1-3/8" | 350 | 500 | 450 | 650 |
| If Plugs leak, increase torque in increments of 25 ft.lbs. until seal is obtained | ||||
Some Standard Photos of Header Plug
Some Common Sizes for Header Plugs,UNF Plugs,Shoulder Plugs for Heat Exchanger are
FAV Header Plugs with 1 Gasket
Material: SS 316
Size: 3/4"-16 UNF
Thread Length: 1"
FAV Header Plugs with 1 Gasket
Material: SS 316
Size: 1-1/8"-12 UNF
Thread Length: 0.875"
FAV Header Plugs with 1 Gasket
Material: SS 316
Size: 1-3/8"-12 UNF
Thread Length: 1"
FAV Header Plugs with 1 Gasket
Material: SS 316
Size: 1-5/8"-12 UNF
Thread Length: 0.875"
FAV Header Plugs with 1 Gasket
Material: SS 316
Size: 2-1/8"-12 UNF
Thread Length: 1"
For various other range of Duplex & Super Duplex Fittings & Valves click here