Skip to content
RPM Diffusion — Professional Marine Valves

Non-return valve

In the Guidi and RPM catalogues, the French term “vanne à clapet” refers to a gate valve: a gate, operated by a handwheel, moves up and down across the flow. When open, it leaves the full bore clear. This type of valve is used fully open or fully closed; for flow control, a globe valve is used.

Read more

All valves in this family are made of bronze:

  • female-female threaded, Guidi 1522, from 1/4 to 6 inches, PN16 (PN10 in 5 and 6 inches), ISO 228-1 thread according to the data sheet;
  • quick-closing with a lever, Guidi 1525, PN16;
  • with drilled PN6 or PN16 flanges, Guidi 1660, from DN15 to DN150;
  • RPM versions with a 3.1 or Lloyd's certificate stated on the data sheet, including an all-bronze PN20 model;
  • a flanged globe valve with 3.2 and RINA certificates, and a Medana & Visca gauge valve.

How to choose: the connection, threaded or flanged, the nominal pressure (from PN6 to PN20 depending on the model) and, where the ship's classification requires it, the certificate needed: 3.1, 3.2, Lloyd's or RINA. The drawing on each data sheet shows how the valve works.

Brands: Guidi, RPM and Medana & Visca.

9 products