Sectional progressive distributors of PRA series and PRB series suitable for extensive lubrication circuits are supplied in two size series. Both series are supplied maximally with 10 working sections with optional nominal dose from 0.08 up to 0.9 cm³/stroke. Another combination of doses is possible by using connecting bridges and doubling the dose to the outlet by interconnecting inside of working section. Distributors may be fitted with electrical or visual operation signalling. Dispensers may be supplied with connecting fitting with thread G1/4″.