top of page
INDUSTRIAL LTD

© 2026 Lias Industrial | All rights reserved

Email
sales@liasindustrial.co.uk

Phone

+44 (0) 1204 594941

Address
2 John Street, Bromley Cross, Bolton BL7 9BA

Related Products

FST (Flexible Single Tube)

This Class I igniter is located in a tilting tangentially fired boiler adjacent to the main fuel nozzle.

As an oil igniter, the unique rear atomizer results in a single tube extending to the one piece tip. This design eliminates the need for atomizer maintenance.

As a gas igniter, the gas is directed to the tip through the single flexible tube. Stabilization is maintained by a 7.5 inch swirler which creates a low pressure zone just down stream of the nozzle. Combustion air is provided from the windbox.

 

Forney’s Flexible Single Tube (FST) Igniter provides multi-fuel, stable and reliable ignition for tangential burners utilizing a flexible design for optimal ignition with tilting nozzles.

 

  • Fuel Types: Light - Medium Oil

  • Markets Served: Corner fired Utility boiler

Product Info

  • Class 1 warm up and ignition

  • Capacity up to 11Mw

  • Air atomised

  • Designed for tilting burners

  • Low opacity

  • Patented protected combustion zone

  • Flame detection with UV scanner

  • High energy ignition as standard

  • Complete stainless steel construction

  • Available in any length

  • Diameters from 50mm

  • Near maintenance-free operation

  • Up to 99% reliable ignition 

Part Numbers

Fuel:

No. 2 Oil or Natural Gas

BTU Rating:

Oil: 10 – 37 MBTU/hr Gas: 10 – 20 MBTU/hr

Fuel Pressure:

Oil: 60 – 125 psig Gas: 12 – 25 psig

Cooling/Combustion Air:

Flow: 40 SCFM Pressure: 6 WC

Guide Tube OD:

2.38”

Mount Tube OD:

2.88”

Length:

As Required, up to 8.5’

Atomizing Pressure:

20 psig (Differential over oil pressure)

Material of Construction:

Guide Tube and Mount Tube, Carbon Steel;  Guide Tube Tip and Pilot Area, 304 SST

Retract Cylinder Air Pressure: (HESI/oil gun)

60 to 100 psig

PDF Manuals

FST Igniter Manual

Certificates

-

HESI Specifications

Input Voltage:

120 to 240 VAC, 50/60 Hz

Input Power:

120 VAC @ 1.5 A (2-A fuse); 240 VAC @ 0.75A (1-A fuse)

Output Voltage:

2000 VDC

Output Energy:

12 joules per spark

Spark Rate:

3 per second (approximately)

Duty Cycle:

50% at temp 0°F to 135°F (-18°C to 57°C) Ambient

bottom of page