Blow Downs for RC Drilling

Flotec Blow Down Valve

You don’t build a great RC drill rig hydraulic blow down valve overnight. Harlsan’s Hydraulic Blow Down represents years of development and is reflected in its reputation within the RC drilling industry today.

While manual RC Drilling Blow Down operations are time-consuming and involve safety issues, the Harlsan Hydraulic Blow Down can clear RC drill string blockages, backflush holes, improve sample purity and clear bit face blockages at the flick of a switch. The Blow Down is available in single port design for blow down function only or double port for blow up and blow down operation.

RC Blowdown Testimonial

“The durability, availability of parts & ease of service keeps downtime to a minimum. We simply drill more meters with Harlsan Blow Downs on our rigs.”

Jason Howie, Operations Manager – Ranger Drilling

Designed and field-tested for the toughest of reverse circulation drilling conditions. Get a boost in production and reduce downtime with a Harlsan Blow Down on your rig.

Blowdown Valve Upgrade

Upgrade your RC rig with the Harlsan Flotec Blowdown which can be added to fit most Reverse Circulation (RC) systems. Flotec keeps you drilling!

Blow Down Product Brochures & Guides

Download the Flotec Blowdown Product Brochure Harlsan Blow Downs for RC Drilling Brochure

Download the Harlsan Blow Down User Guide Harlsan Blow Downs for RC Drilling Brochure

Our Blow Down Product Range

Traditional Blow Down

Bore Size50mm
DimensionsH214mm, L445mm, W172mm
Coupling Type6″ ACME to 4½” / Harslan Flange to Flange
Hyd/Air FitmentHYD ⅜ BSP

FLOTEC Blowdown

Bore Size50mm + 60mm
DimensionsH270mm, L500mm, W160mm
Coupling Type6″ ACME to 4½” / Harslan Flange to 4½” ACME
Hyd/Air Fitment (Up/Down)HYD ⅜ BSP, Air 1″ BSP(up), 1¼” BSP (down)
Hyd/Air Fitment (Down)HYD ⅜ BSP Air 2″ BSP (down)

The FLOTEC Blow Down System

FLOTEC Blow Down Key Features & Benefits

  • Clearing rod string blockages and back flushing holes
  • Improved sample purity
  • Independent hydraulic actuator system
  • Increased wear life and durability
  • Lower cost of maintenance and extended service life cycle
  • Improved safety with integrated anchor points for handling, whip checks and restraint leads

Get A Quote

Ordering Information – Blow Downs

From Africa through to Asia, Eastern Europe through to the UK, and Canada through to South America. We can supply you with robust and productive Harlsan Blow Downs.

You can depend on us

For pricing, immediate supply or customised orders
Call (08) 9021 1288 (+61 8 9021 1288 international).

Get your engineering component and part supply requirements on time, on budget and on track with Harlsan manufacturing services. Call us now and request for a quote.

Your Key Contacts

Matt Bevan, Sales Manager for Harlsan

Matt Bevan

Sales Manager for Harlsan component and part manufacturing

Harlsan on Linkedin

Harley Hollier, Technical Director

Harley Hollier

Technical Director for manufacturing and application engineering.

Harlsan on Linkedin

Avatar for Harley Hollier

About Harley Hollier

Harley Hollier has had extensive experience in the reverse circulation drilling industry as a director of Harlsan Industries. Harley’s current industry roles incorporate the engineering, research and development of innovative reverse circulation drilling equipment and supporting customers with drilling application and solution development. He can be contacted on Ph. +61 8 9021 1288 (GMT +8 Hours) or email:
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