HFB, HFS, HFC SERIES

Free flow, valveless pressure washer couplings

Holmbury’s HFB Series brass couplings are able to accommodate high flow rates and minimal pressure drops. The couplings are valveless, hence when disconnected any fluid in the system can escape. Suitable for non-hazardous fluids only.

FEATURES

Valveless design allows for high flow rates and minimal pressure drop characteristics
Bidirectional flow

CONSTRUCTION

Brass body
Fitted with Nitrile seals
Available in carbon steel (HFC) and stainless steel (HFS) on request

ACCESSORIES

Seal kits are available for the HFB Series

APPLICATIONS

Designed for use in pressure washer systems and systems containing non-hazardous fluids
Carpet cleaners
Steam cleaners
Coolant lines
Any non-valved application

AVAILABLE SEALS AND TEMPERATURE RANGE

All carbon steel products have Nitrile Butadiene Rubber seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) seals fitted as standard. Special seal materials available on request.

0⁰
0⁰

106⁰
223⁰F

NITRILE
VITON^®

-20⁰C
-4⁰F

120⁰C
248⁰F

EPDM
KALREZ^®

-25⁰C
-13⁰F

200⁰C
392⁰F

VITON^®
NITRILE

-40⁰C
-40⁰F

300⁰C
572⁰F

KALREZ^®
EPDM

-50⁰C
-58⁰F

ABBREVIATION	TRADE NAME	CHEMICAL NAME	MIN TEMP.	MAX TEMP.
NBR XNBR	Chemigum®, Hycar8, Breon®, Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol®	Nitrile Butadiene Rubber Carboxylated Nitrile Rubber	-40°C (-40°F)	106°C (223°F)
FKM (FPM)	Dai-el®, Fluorel®, Tecnoflon®, Viton®	Fluoro-elastomer Rubber	-20°C (-4°F)	200°C (392°F)
EPR EPDM	Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM®	Ethylene Propylene Copolymer Ethylene Propylene Terpolymer	-50°C (-58°F)	120°C (248°F)
FVMQ	Silastic 1S®, FSE®	Fluorosilicone Rubber	-65°C (-85°F)	170°C (338°F)
FFKM	Perlast®, Kalrez®, Chemraz®, Kaflon®	Perfluoroelastomer	-25°C (-13°F)	300°C (572°F)