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Flexible Tubular Heaters for Hot Runner Manifolds

Product Overview

Flexible Tubular Heaters for Hot Runner Manifolds

Flexible tubular heaters for hot runner manifolds, designed for effortless forming, high sheath contact and energy-efficient, uniform heating.

Pratik flexible tubular heaters are designed for hot runner manifolds where heaters must be formed into complex shapes while maintaining intimate contact with the groove.

High sheath-to-groove contact and optimised watt density ensure rapid heat transfer, uniform temperature and reduced energy consumption.

The range includes 6.5 mm, 8.0 mm and 8.5 mm heater data for different manifold groove requirements.

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Flexible Tubular Heaters for Hot Runner Manifolds
  • Available diameters: 6.50 mm, 8.00 mm & 8.50 mm.
  • Effortless forming for easy installation.
  • Maximum sheath contact (upto 75%).
  • Rapid heat transfer and distribution.
  • Minimal temp. variance between heater sheath & manifold.
  • Reduced energy costs.
  • Smaller bending radius (12 mm).
  • The groove for insertion of PHPflex must be equipped with a chamfer.
  • Observe minimum bending radius of the PHPflex (recommended groove geometry and radius refer to catalogue).
  • For 8.0 mm & 8.5 mm: Do not bend the unheated ends of the PHPflex more than length of 40 mm.
  • For 6.5 mm: Do not bend the unheated ends of the PHPflex less than length of 40 mm from each ends.
  • Do not straighten the bent areas of the heater to avoid breakage.
  • For 8.0 mm & 8.5 mm: Terminals M2.5 and M4.
  • For 6.5 mm: Terminals M2.5.
  • In order to attach a cable lug to the threaded pin, lock the two nuts one against the other at 1 N.m tightening torque.
  • Mark centre of the PHPflex before inserting into a groove, start at this mark in both directions.
  • Do not use sharp-edged tools.
  • The heater can be bent manually and fixed into the groove by plastic mallet.
  • For 8.0 mm & 8.5 mm: Sheath material - Stainless Steel.
  • For 6.5 mm: Sheath material - Nickel.
  • Sheath temperature of heating element - max. 700 °C.
  • Standard voltage - 230 V.
  • High voltage test - 1000 V AC.
  • Insulation resistance - ≥5 MΩ at 500 V DC.
  • For 8.0 mm & 8.5 mm: Leakage current - < 0.5 mA at 253 V AC.
  • For 6.5 mm: Leakage current - < 0.5 mA at 240 V AC.
  • For 8.0 mm & 8.5 mm: Standard Length available 400 mm upto 1550 mm (Tolerance ± 1.5%).
  • For 6.5 mm: Standard Length available 400 mm upto 1200 mm.
  • Wattage tolerance - ±10%, Length tolerance - ± 1.5%.
  • Groove Dimensions - For 8 mm: 7.80 (±0.05) mm x 8.00 (±0.10) mm, For 8.5 mm: 8.30 (±0.05) mm x 8.50 (±0.10) mm.
  • Groove Dimensions - For 6.5 mm: 6.5+0.1 mm x 6.5+0.1 mm.
Heater Ø Groove Width (W) Groove Height (H) Tolerance
6.5 mm 6.5 +0.1 mm 6.5 +0.1 mm Round groove geometry
8.0 mm 7.80 mm 8.00 mm W: ±0.05 mm, H: ±0.10 mm
8.5 mm 8.30 mm 8.50 mm W: ±0.05 mm, H: ±0.10 mm
Flexible tubular heaters groove diagram

Stock Sizes - For Dia 6.50 mm

Length (mm) Watts
400 500
450 600
500 650
550 700
600 800
650 850
700 900
750 1000
800 1100
850 1200
900 1300
950 1350
1000 1400
1050 1450
1100 1500
1150 1550
1200 1600

Stock Sizes - For Dia 8.0 mm & 8.50 mm

Length (mm) Watts
400 800
450 900
500 1000
550 1150
600 1250
650 1400
700 1500
750 1600
800 1750
850 1850
900 1950
950 2100
1000 2200
1050 2300
1100 2450
1150 2550
1200 2650
1250 2800
1300 2900
1350 3000
1400 3150
1450 3250
1500 3350

Need a non-listed length/wattage combination? Request a custom build.

Need guidance on groove sizing?

Share manifold drawing, groove dimensions, voltage & wattage—our team will recommend the ideal flexible heater.

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