Capillary Hoses - Thermoplastic Gauge Connections

Precision thermoplastic capillary hoses for connecting pressure gauges, temperature sensors, and instrumentation to HVAC/R systems. Flexible, lightweight construction ideal for custom gauge manifold assemblies and precision measurement applications.

Key Features

• Thermoplastic construction — Flexible, durable, and temperature-resistant material
• Precision 2mm bore — Accurate pressure transmission for reliable gauge readings
• Multiple fitting configurations — Straight x Straight, Straight x 90°, or Straight x 45° options
• Length options — 30cm (12") to 152cm (60") for various applications
• Lightweight design — Easy to route in tight spaces and complex installations
• Professional quality — Reliable connections for precision instrumentation

Available Configurations

Fitting Types

• Straight x Straight (STR) — Both ends straight for direct in-line connections
• Straight x 90° (ST) — One straight, one 90° angled fitting for tight spaces
• Straight x 45° (S45) — One straight, one 45° angled fitting for intermediate angles

Available Lengths

• 30cm (12") — Compact gauge connections
• 45cm (18") — Short-reach applications
• 60cm (24") — Standard gauge manifold connections
• 90cm (36") — Extended reach for remote gauges
• 122cm (48") — Long-reach applications
• 152cm (60") — Maximum reach for difficult access points

Applications

Gauge Manifold Assemblies

Essential for building or repairing manifold gauge sets. Capillary hoses connect the gauge body to the manifold block, allowing flexible gauge positioning whilst maintaining accurate pressure readings.

Custom Gauge Setups

Create custom gauge configurations for specific applications. Mix and match lengths and fitting angles to suit your exact requirements, whether for permanent installations or portable service kits.

Instrumentation Connections

Connect pressure gauges, temperature sensors, and other instrumentation to HVAC/R systems. The flexible thermoplastic construction allows routing through tight spaces whilst maintaining measurement accuracy.

Replacement Capillary Tubes

Replace damaged or worn capillary hoses in existing gauge manifolds. Available in standard lengths to match most commercial gauge sets.

Why Choose Thermoplastic Capillary Hoses?

• Flexibility — Routes easily through tight spaces and around obstacles
• Durability — Resistant to refrigerants, oils, and temperature extremes
• Accuracy — Precision bore ensures accurate pressure transmission
• Lightweight — Reduces strain on gauge connections
• Chemical resistance — Compatible with all common refrigerants and oils
• Temperature range — Performs reliably in HVAC/R operating conditions

Technical Specifications

• Internal bore: 2mm precision diameter
• Material: Thermoplastic (temperature and chemical resistant)
• Fitting types: Straight, 90°, and 45° configurations
• Pressure rating: Suitable for standard HVAC/R gauge applications
• Temperature range: -40°C to +100°C (typical)
• Refrigerant compatibility: All common HVAC/R refrigerants

Choosing the Right Configuration

Fitting Angle Selection

• Straight x Straight: Best for direct in-line connections with plenty of space
• Straight x 90°: Ideal when gauge needs to be perpendicular to manifold (most common)
• Straight x 45°: Perfect for intermediate angles and custom orientations

Length Selection

• 30-60cm: Compact gauge manifolds and portable kits
• 60-90cm: Standard manifold gauge sets (most popular)
• 90-152cm: Remote gauge mounting and extended reach applications

Professional Tips

• Avoid kinking: Route capillary hoses with gentle bends to prevent flow restriction
• Secure properly: Use clips or ties to prevent movement during service
• Check for damage: Inspect regularly for cracks, kinks, or wear
• Replace when worn: Damaged capillary hoses can cause inaccurate readings
• Match lengths: Use consistent lengths for balanced gauge appearance

Common Uses

• Building custom manifold gauge sets
• Repairing damaged gauge manifolds
• Creating remote gauge mounting setups
• Connecting temperature sensors and instrumentation
• Upgrading portable service kits
• Laboratory and testing equipment connections

Need help choosing capillary hoses? Contact our technical team for expert advice on gauge connections and instrumentation.