Resources
ASTM F1387
NABL Accredited Test Laboratory | ISO/IEC 17025:2017 | TC-16263
ASTM F1387 is the document a specification reaches for when a mechanically attached fitting has to have been proven rather than described. It is a suite rather than a single test, which is why "tested to F1387" means little without the clause: a fitting proven to A4 has held a hydrostatic proof pressure, a fitting proven to A10 has survived rotary flexure, and those are entirely different assurances. The six below are the ones NABL has assessed us to perform.
Accredited clauses
| Clause | Test | Notes |
|---|---|---|
| A3 | Pneumatic proof | Proof pressure applied with a gas, for connections whose service medium is a gas. |
| A4 | Hydrostatic proof | Proof pressure applied with a liquid. The baseline containment check before any endurance work begins. |
| A5 | Impulse | Repeated pressure pulses: the load that finds a connection relying on friction rather than on grip. |
| A8 | Hydrostatic burst | Pressure raised to failure, establishing the margin above the rating rather than confirming the rating. |
| A9 | Repeated assembly | Make and break, repeated, because a fitting that seals once and leaks on reinstallation fails in maintenance, not in commissioning. |
| A10 | Rotary flexure | Rotating bending applied to the made-up joint, qualifying it against continuous line movement. |
What we can show
Accredited scope, certificate TC-16263
All six clauses appear by number on the NABL scope annexure, valid to 07/03/2029.
Design assessment for double-ferrule fittings
Fluid Controls publishes an ASTM F1387-99 (2012) assessment for its double-ferrule range.
Products qualified to ASTM F1387
41 catalogue models list this standard among their approvals.
Tube Fittings & Connectors
O-Seal Male Adapter
Fluid Controls Double Ferrule O-Seal Male Adapter, OD Tube x Male Straight Thread.
Tube Fittings & Connectors
45° Male Elbow
Fluid Controls Double Ferrule Tube Fitting, 45° Male Elbow, Tube OD x Male NPT
Tube Fittings & Connectors
45° Positionable Male Elbow
Fluid Controls Double Ferrule Tube Fitting, 45° Positionable Male Elbow, Tube OD x Male Thread.
Tube Fittings & Connectors
Back Ferrule
The Fluid Controls Back Ferrule is a key component of a Double-Ferrule tube fitting. It works together with the front ferrule to provide reliable tube gripping and sealing.
Tube Fittings & Connectors
Bulkhead Elbow
Fluid Controls Double Ferrule Bulkhead Elbow Fitting, Bulkhead Union Elbow, Tube OD x Tube OD
Tube Fittings & Connectors
Bulkhead Female Connector
Fluid Controls Double Ferrule Bulkhead Female Connector, Tube OD x Female Thread
Tube Fittings & Connectors
Bulkhead Male Connector
Fluid Controls Double Ferrule Bulkhead Male Connector, Tube OD x Male Thread
Tube Fittings & Connectors
Bulkhead Reducer
Fluid Controls Double Ferrule Bulkhead Reducer Fitting, Inch OD Tube x Inch OD Ports
Tube Fittings & Connectors
Bulkhead Reducing Union
Fluid Controls Double Ferrule Fitting Bulkhead Reducing Union, Tube OD x Reducing Tube OD.
Tube Fittings & Connectors
Bulkhead Union
Fluid Controls Double Ferrule Straight Bulkhead Union Connector, Tube OD x Tube OD
Tube Fittings & Connectors
Butt Weld Pipe Connector
Fluid Controls Double Ferrule Butt Weld Pipe Connector, Tube OD x Pipe.
Tube Fittings & Connectors
Butt Weld Pipe Elbow
Fluid Controls Double Ferrule Butt Weld Pipe Elbow, Tube OD x Pipe.
Tube Fittings & Connectors
Female Adapter
Fluid Controls Double Ferrule Female Adapter, OD Tubes x Female Thread.
Tube Fittings & Connectors
Female Branch Tee
Fluid Controls Double Ferrule Female Branch Tee, Tube OD x Tube OD x Female Thread.
Tube Fittings & Connectors
Female Elbow
Fluid Controls Double Ferrule Female Elbow, Tube OD x Female Thread.
Tube Fittings & Connectors
Female Manometer Adapter
Fluid Controls Double Ferrule Female Manometer Adapter, OD Tubes x Female Thread.
Tube Fittings & Connectors
Female Manometer Connector
Fluid Controls Double Ferrule Female Manometer Connector, Tube OD x Female Thread.
Tube Fittings & Connectors
Female Run Tee
Fluid Controls Double Ferrule Female Run Tee, Tube OD x Female Thread x Tube OD.
Tube Fittings & Connectors
Fitting End Closure
Fitting End Closure in double-ferrule design for instrumentation tube systems. Available in SS, Brass, and Monel.
Tube Fittings & Connectors
Front Ferrule
The Fluid Controls Front Ferrule is a key component of a Double-Ferrule tube fitting. It works together with the Back ferrule to provide reliable tube gripping and sealing.
Tube Fittings & Connectors
Male Adapter
Fluid Controls Double Ferrule Male Adapter, OD Tube x Male Thread.
Tube Fittings & Connectors
Male Branch Tee
Fluid Controls Double Ferrule Male Branch Tee, Tube OD x Tube OD x Male Thread.
Tube Fittings & Connectors
Male Connector
Fluid Controls Double Ferrule Male Connector, Tube OD x Male Thread
Tube Fittings & Connectors
Male Run Tee
Fluid Control Double ferrule Male Run Tee, Tube OD x Male Thread On Run Side x Tube OD
Tube Fittings & Connectors
O-Seal Male Connector
Fluid Controls Double Ferrule O-Seal Male Connector, Tube OD x Male Straight Thread.
Tube Fittings & Connectors
Positionable Branch Tee
Fluid Controls Double Ferrule Positionable Branch Tee, Tube OD x Tube OD x Male Parallel Thread.
Tube Fittings & Connectors
Positionable Male Branch Tee
Fluid Controls Double Ferrule Positionable Male Branch Tee, Tube OD x Tube OD x Male Parallel Thread.
Tube Fittings & Connectors
Positionable Male Elbow
Fluid Controls Double Ferrule Positionable Male Elbow, Tube OD x Male Parallel Thread.
Tube Fittings & Connectors
Positionable Male Run Tee
Fluid Controls Double Ferrule Positionable Male Run Tee, Tube OD x Male Parallel Thread x Tube OD
Tube Fittings & Connectors
Reducer
Fluid Controls Double Ferrule Reducer Fitting, Inch OD Tube x Inch OD Ports
Tube Fittings & Connectors
Reducing Union
Fluid Controls Double Ferrule Reducing Union Fitting, Tube OD x Reducing Tube OD
Tube Fittings & Connectors
Reducing Union Tee
Fluid Controls Double Ferrule Reducing Union Tee Fitting, Tube OD x Tube OD x Tube OD
Tube Fittings & Connectors
Union
Fluid Controls Double Ferrule Straight Union Connector, Tube OD x Tube OD
Tube Fittings & Connectors
Union Cross
Fluid Controls Double Ferrule Union Cross, Tube OD x Tube OD x Tube OD x Tube OD.
Tube Fittings & Connectors
Double Ferrule Fittings
Double ferrule instrumentation tube fittings — also called twin ferrule fittings — for leak-tight, reusable connections on instrumentation tubing.
Specialty & Engineered Products
Condensate Pot
Condensate pots are robust, engineered assemblies designed to collect and maintain condensate at instrument impulse lines, ensuring reliable and accurate pressure/flow measurement in steam and process applications.