Description

API 16A Clamps 

 

The Hub Clamps is a kind of high pressure connection component for wellhead equipment. The clamps are different from all other API equipment in regard to design and hydrotest. Clamps serve as fasteners similar to bolts, they do not come in contact with well fluid, and they may connect several API specified connectors having different nominal sizes and working pressures.

The hub clamp is designed and manufactured according to API Spec 16A, Clamps provide a reliable means to join API and other hub connections. Any of the equipment in the following list may have clamp hub connections:

 

* Wellhead Equipment
Casing Heads
Casing Spools
Tubing Heads
Valves
Chokes
Crosses
Tees
Flowlines

* Drilling Equipment
Spools
Blowout Preventers
Choke and Kill Manifolds

Clamp No. Nominal Bore Working pressure Ring gasket Bolt Size
1 1 13/16 10000psi BX151 7/8-9UNX7
2 1/16 5000psi BX152 7/8-9UNX7
2 1 13/16 15000psi BX151 7/8-9UNX8
2 1/16 10000psi BX152 7/8-9UNX8
2 9/16 5000psi BX151 7/8-9UNX8
3 1 13/16 20000psi BX151 1-8UNX9
2 1/16 15000psi BX152 1-8UNX9
2 1/16 20000psi BX152 1-8UNX9
2 9/16 15000psi BX153 1-8UNX9
4 2 9/16 10000psi BX153 1-8UNX 8 1/2
3 1/8 5000psi BX154 1-8UNX 8 1/2
5 3 1/16 10000psi BX154 1-8UNX 8 1/2
4 1/16 5000psi BX155 1-8UNX 8 1/2
6 2 9/16 20000psi BX153 1 1/8-8UNX9 3/4
3 1/16 15000psi BX154 1 1/8-8UNX9 3/4
4 1/16 10000psi BX155 1 1/8-8UNX9 3/4
7 5 1/8 10000psi BX169 1 3/8-8UNX12
8 3 1/16 20000psi BX154 1 1/2-8UNX13 1/2
4 1/16 15000psi BX155 1 1/2-8UNX13 1/2
7 1/16 5000psi BX156 1 1/2-8UNX13 1/2
9 5000psi BX157 1 1/2-8UNX13 1/2
9 11 3000psi RX53 1 3/8-8UNX13
10 4 1/16 20000psi BX155 1 7/8-8UNX17
7 1/16 10000psi BX156 1 7/8-8UNX17
9 10000psi BX157 1 7/8-8UNX17
11 5000 BX158 1 7/8-8UNX17