The G Series is Yamada’s global range, and it takes a deliberately different approach to the rest of the line-up. Instead of a separate pilot valve, these pumps use a step spool arrangement, which means fewer moving parts, less to go wrong and noticeably lower air consumption.
Where the G Series really earns its place is repetitive on-off work. Spraying, dispensing and batch filling all involve constantly cycling the pump, and that is exactly the duty that exposes a weak air valve. These pumps are designed to shift cleanly every time and offer strong suction lift, so they self-prime readily from a drum or sump. If your operators are triggering a gun or a filling head all day, this is the range to look at.
Across the range, you will find wetted bodies in aluminium, 316 stainless steel, polypropylene and PVDF, with centre sections in either aluminium or polypropylene. Diaphragm and ball options include nitrile, Santoprene, TPE and PTFE, plus PTFE with Santoprene backing. Many of the pumps carry an ATEX rating. All are supplied with BSP porting.
If your questions have not been answered here, get in touch with our team for more information.
The G Series uses a step spool air valve and does away with the independent pilot valve system found on NDP pumps. That means fewer parts overall, simpler maintenance and lower air consumption. The NDP range is broader and covers larger sizes, while the G Series is focused on 1/2 inch and 1 inch duties.
They are particularly well matched to spraying, dispensing and batch filling, where the pump is constantly starting and stopping. The air valve design is built for exactly that kind of cycling. They also offer strong suction lift, which makes them straightforward to prime from drums, IBCs and sumps.
Yes, that is one of the main design goals of the step spool arrangement. Removing the separate pilot valve system reduces the air consumed per stroke compared with conventional designs. Over a full shift on continuous duty, that shows up directly in compressor running costs.
Many of these pumps carry an ATEX rating. That covers most of the common build codes for use in potentially explosive atmospheres. Let us know your zone classification and required equipment category and we will confirm which models suit.
Absolutely! If you’re unsure which pump is the best fit for your application, our team is here to help. You can pop up to our live chat for instant support, or simply send your requirements and pump details to sales@tfpumps.com. One of our experts will quickly recommend the most suitable pump for your needs.
