Overview
Vacuum tank filter bag, short and narrow. HydraMaster part number 000-049-030, listed in HydraMaster's own accessory pages as 7" × 20" (approximately 18 cm × 51 cm) and referred to throughout the parts lists as the 92+ Truckmount filter bag.
This is the most widely specified of the three HydraMaster bags. It appears in the standard spare parts kit of most of the range.
Machines that list this bag
Named in the spare parts list of:
- Boxxer 421 — 2 supplied (kit 078-340)
- Boxxer 427 — 2 supplied
- SpitFire 3.2 — 1 supplied
- SpitFire 4.0 — 2 supplied (kit 078-100)
- CDS 4.2 — 6 supplied (kit 078-098)
- CDS 4.7 — listed in kit 078-099
- Crossfire 4.2
The CDS parts list also shows 2 bags fitted in the vacuum tank assembly itself.
Choosing the right shape
- 049-030 — Short and Narrow, 7" × 20" — this bag
- 049-028 — Long and Narrow, 7" × 34"
- 049-029 — Short and Wide, 14" × 18"
Important: measure the tank, not the machine. Truckmounts of the same model have been built with different tank arrangements over the years.
Specifications
- HydraMaster part number: 000-049-030
- Nominal size: 7" × 20" (about 18 cm × 51 cm)
- Closure: plastic cord lock
Bag dimensions vary slightly between production runs. Treat the size as nominal.
Operating advice
Where the parts list shows two bags, run two. They are not spares kept in reserve — the machine was built expecting both inlets bagged.
Empty and wash rather than shaking out. A partly blocked bag costs vacuum lift on every job that follows, and the loss is gradual enough that most operators do not notice until it is significant.
Frequently asked questions
What does "92+ Truckmount" mean?
It is HydraMaster's own long-standing description for this bag, dating to their 1992-onwards truckmount range. It is a naming convention, not a size.
How many should I keep on the van?
At least one spare set. Swapping a blocked bag on site takes a minute; working a whole job down on vacuum costs far more.
Does it replace the in-tank stainless filter?
No. Both are fitted, and both do a different job.
Which bag suits my machine?
The one that fits your tank and inlet. Measure the old bag, or send us a photo inside the recovery tank.
Not sure which of the three shapes you need? Send us your machine model and a photo inside the recovery tank and we will pick the right one.
