STIHL Battery Powered Pressurized Water Supply WSA40SET - SA090118513
The STIHL WSA40SET is a battery-powered pressurised water supply tank designed for use with STIHL battery and petrol cut-off machines on construction sites without a fixed water supply. The 10-litre tank delivers a consistent, automatic water flow throughout the entire battery runtime, keeping the cutting wheel cool and binding dust for cleaner, safer wet cuts.
Set includes the STIHL AS 2 battery and AL 1 charger — ready to work straight out of the box. Compatible with all STIHL battery and petrol cut-off machines. The included PKA 30 pump head is also compatible with the manual STIHL pressurised water tank and STIHL SG 21 and SG 31 sprayers.
Key Features
- 10-Litre Tank: Large capacity for extended working days on sites without water supply.
- Stepless Pressure Adjustment: 1.5–2.5 bar variable pressure to match different applications and cutting wheels.
- Auto Shut-Off: Automatically switches off when tank is empty or connected tool is idle, extending battery life.
- LED Charge-Level Indicator: Remaining battery runtime visible at a glance for efficient work planning.
- IPX4 Splashproof: PKA 30 pump head certified for daily use in rainy conditions.
- Constant Power: STIHL Constant Power electronics maintain consistent performance throughout the battery charge.
- Soft-Grip Handle: Comfortable to carry on site.
- Set Includes: AS 2 battery, AL 1 charger, 4m hose with standard coupling, pump head, pressure relief valve, and level indicator.
Specifications
- Model: WSA40SET (SA090118513)
- Cordless power system: AS
- Rated voltage: 11 V
- Max voltage: 12 V
- Container capacity: 10 L
- Water throughput: 2.8–3.2 L/min
- Working pressure: 1.5–2.5 bar (stepless)
- Max battery working time (AS 2): 30 min
- Max tank fillings per charge (AS 2): 12
- Weight: 3.1 kg
- Height: 745 mm
- Depth: 260 mm
- IP rating: IPX4
- Sound pressure level: 69.2 dB(A)
- Sound power level: 77.2 dB(A)



