High Pressure Fittings

Hiflux high pressure fittings, accessories, and manifold components for industrial and extreme service applications.

Cone and thread fittings in cold-formed stainless steel 316, rated from 10,000 psi to 150,000 psi, in elbow, tee and cross bodies with matched glands, collars and sleeves. Operating range −423°F (−252°C) to 1200°F (649°C).

High Pressure Fitting - Ultra High Pressure
Fitting
High Pressure Fitting - Ultra High Pressure

Ultra high pressure fitting rated to 150,000 psi for extreme applications.

High Pressure Fitting Accessory - Ultra High Pressure
Fitting Accessory
High Pressure Fitting Accessory - Ultra High Pressure

Ultra high pressure fitting accessory rated to 150,000 psi.

High Pressure Manifold Block - High Pressure
Manifold Block
High Pressure Manifold Block - High Pressure

High pressure manifold block for multi-port flow distribution at 60,000 psi.

High Pressure Tube Cap - High Pressure
Tube Cap
High Pressure Tube Cap - High Pressure

High pressure tube cap for sealing lines at 60,000 psi.

Oil Based Thread Lubricant - Blue Lube
Thread Lubricant
Oil Based Thread Lubricant - Blue Lube

Oil based thread lubricant for high pressure fittings and connections. Prevents galling and seizing.


Pressure ratings and tube sizes

RatingTube sizesConnection system
10,000 psi1/2"Gland and sleeve (24° cone)
15,000 psi1/8", 1/4", 3/8"Gland and sleeve (24° cone)
20,000 psi1/4", 3/8", 9/16", 3/4", 1"Gland, collar and nipple (60° cone)
30,000 psi1/8", 1"Gland, collar and nipple (60° cone)
60,000 psi1/4", 3/8", 9/16"Gland, collar and nipple (60° cone)
100,000 psi1/4", 3/8", 9/16"Gland, collar and nipple (60° cone)
150,000 psi3/8"Gland, collar and nipple (60° cone)

Metric gland threads (M16×1.5P, M20×1.5P, M26×1.5P) are available at 60,000 psi alongside the UNF standard.


What makes up a fitting

A fitting is the body — elbow, tee or cross. The connection also needs an accessory set: a gland, plus a sleeve below 20,000 psi or a collar above it. Both are supplied as matched sets, and components do not cross the 20,000 psi split.

Above 20,000 psi the collar and nipple threads are left-hand while the gland threads into the body right-hand. Worth briefing anyone assembling these for the first time.


Vibration and pulsation

Anti-vibration fitting and accessory sets are available at 20,000 psi (1/4" to 1") and 60,000 psi (1/4" to 9/16"), adding a collet to the assembly. Part numbers carry an -AV suffix. Specify these downstream of pumps and compressors — and clamp the run as well.


Send us your specification

Working pressure, port direction, tube size and media. We will confirm the part number, accessories and tube preparation you need.