|
HIF - Definitions |
| Active end |
|
The end of an HIF pipe spool incorporating
Belleville washer(s) and force distribution ring. |
|
Adapter |
|
A PTFE lined HIF component containing Belleville
washers and force distribution ring used to connect passive ends to passive
ends. |
| Anti-seize Lubricant |
|
A high temperature lubricant applied to bolts
and studs prior to torquing. |
| Belleville Washer |
|
Coned disc springs manufactured from SAE 6150
steel, austempered to RC 42-48. |
| Dual Load Path |
|
Independent forces extended on (1) PTFE flared
faces through Belleville washers and (2) torque applied to load bearing
rings. |
| Factory Mutual Approval |
|
Satisfactory completion of HIF
testing preformed by the Factory Mutual Research Corporation. |
| Force Distribution Ring |
|
A thick washer manufactured from
powder metal F0008-R that distributes linear force equally around the
circumference of HIF PTFE flares. |
| HIF |
|
High Integrity Flange |
|
Load Bearing Ring |
|
The HIF component that makes the metal
to metal seal between passive and active end HIF pipe spools. |
| Passive End |
|
The end of an HIF pipe spool containing
a PTFE flare with thin washer. |
| Primary Seal |
|
The PTFE to PTFE seal, pre-loaded by
Belleville washers. |
| Secondary Seal |
|
The metal to metal seal; metal
pipe/fitting flares to load bearing ring adapter. |
|
Special Adapter |
|
An adapter used for passive end
connections, sized to accommodate special customer gasket thickness
requirements. |
|
Special Load Bearing Ring |
|
A load bearing ring used to mate
with non-HIF flat faced flanges, sized to accommodate special customer
thickness requirements. |
|
Stepped Adapter |
|
An adapter used for passive end
connections, sized to accommodate customer gasket diameters greater than
standard HIF gasket diameters. |
|
Stepped Load Bearing Ring |
|
A load bearing ring used to mate
with non-HIF raised faced flanges, sized to accommodate customer gasket
diameters greater than HIF standard gasket diameters. |
| Vent Couplings |
|
A coupling welded over the vent holes
of HIF components, internally threaded to allow the attachment of monitoring
devices. |
| Vent Plug |
|
A porous metal disc in each vent
coupling that allows gas or vapor to escape, and restricts liquid to drops
only. |
