VERDERFLEX Black NBR Food Grade hoses are suitable for conveying oily and
fatty foods in peristaltic pumps
Operating Protocol for
Verderflex Black NBR Food Grade Hose
Cleaning Protocol
VERDERFLEX Black NBR food grade hoses should be cleaned with the following protocol –
First flush 2% Nitric Acid (HNO3) solution for up to 3 minutes at up to 50°C
Second flush 2% Caustic soda (NaOH) solution for up to 20 minutes at up to 100°C
or 5% Caustic soda (NaOH) solution for up to 5 minutes at up to 100°C
or 20% Caustic soda (NaOH) solution for up to 20 minutes at ambient
Final flush Flush with clean water to remove all traces of cleaning solutions
Under no circumstances should VERDERFLEX Black NBR food grade hoses be cleaned with Sodium
Hypochlorite (NaOCl) based cleaning solutions or the above concentrations, exposure durations or
temperatures be exceeded.
EHEDG Approval
VERDERFLEX Black NBR food grade hoses can be used with suitably specified VERDERFLEX pumps to form
an EHEDG accredited hygienic pumping system. To comply with this certification both the approved
particle velocity must be maintained during the cleaning cycle and the appropriate hygienic port flanges
fitted. Should a pump to this specification be required, it should be agreed with your local VERDERFLEX
distributor before the pump is supplied.
Food Grade Approval
All VERDERFLEX Black NBR food grade hoses’ inner liners are certified as compliant to FDA –
CFR 21 Parts 170 to 189 – Item 177.2600
Hose Description
All VERDERFLEX Black NBR Food Grade hoses consist of a smooth black inner food grade liner
bonded to a non-food grade outer. The inner liner is a taste-free and odour-less.
