Have added them to my business contacts.
I've only been using them for a couple of weeks but the fit is good and they are as good as OEM.
24 Volt solution solenoid valve. Fits Viper Fang 20HD, Fang 24T/26T/28T
Fits Nilfisk Advance VF82033-24 (alt # vf8203324)This part is listed as fitting the following models: