CA-FIRE Protection · Fire Monitors
PS Turbine-Worm Fire Water Monitor — Self-Locking, 40–80 L/s, Range ≥65–85 m
PS Series · Worm-gear drive · Self-locking aim · Flow 40–80 L/s · Stainless steel SS 304 · CA-FIRE Factory Direct
PL Handle Foam-Water
PL Turbine-Worm
PS Handle Water
PS Turbine-Worm
Portable Monitor
Monitor Base PZ
Remote Control RCFM
PS Turbine-Worm
Fixed Fire Water Monitor
Worm-Gear Precision for High-Flow Water Attack — Self-Locks On Target
Models: PS8/40W · PS10/50W · PS10/60W · PS10/80W (Turbine-Worm)
The CA-FIRE PS Turbine-Worm Series is the worm-gear drive version of the PS fixed fire water monitor. It shares the same full stainless steel body, 360° rotation, adjustable straight-jet/spray nozzle and water-only discharge as the PS Handle Series — but replaces the direct handle with a turbine-worm (worm-gear) handwheel mechanism on both the horizontal rotation and vertical elevation axes.
The worm-gear is inherently self-locking: once the operator sets the nozzle direction, the handwheel can be released and the monitor holds its aim precisely without drifting. At flow rates of 40–80 L/s, nozzle reaction forces are substantial — the turbine-worm mechanism eliminates the operator fatigue and aim drift that make handle-operated monitors impractical at these flow rates, making the PS Turbine-Worm the correct specification for all high-flow fixed fire water monitor positions.
40–80
L/s Flow
≥85 m
Max Range
1.0–1.6
MPa Pressure
≥+60°
Max Elevation
Self-Lock
Worm-Gear
- Worm-gear drive on both axes — self-locking, nozzle holds aim without operator effort
- No aim drift under high-flow nozzle reaction forces at 40–80 L/s
- Full stainless steel SS 304 body — corrosion resistant, zero coating maintenance
- 360° horizontal rotation and –15° to +60° vertical elevation
- Adjustable nozzle: straight jet (max range) or spray cone (cooling / protection curtain)
- Direct drop-in upgrade for PS Handle monitors — identical PZ base flange interface
- Water-only medium — for Class A occupancies; PL Turbine-Worm for foam-water capability
Choose Your Model
Select the Right Model for Your Flow Rate
PS8/40W
Flow Rate40 L/s
Rated Pressure0.8 MPa
Throw Range≥65 m
OperationTurbine-Worm
MediumWater
Entry High-Flow
PS10/50W
Flow Rate50 L/s
Rated Pressure1.0 MPa
Throw Range≥70 m
OperationTurbine-Worm
MediumWater
Standard Industrial
PS10/60W
Flow Rate60 L/s
Rated Pressure1.0 MPa
Throw Range≥75 m
OperationTurbine-Worm
MediumWater
Large Facility
PS10/80W
Flow Rate80 L/s
Rated Pressure1.0 MPa
Throw Range≥85 m
OperationTurbine-Worm
MediumWater
Main Attack / Max Flow
Technical Data
Technical Specifications — PS Turbine-Worm Series
| Product Name | Model | Flow Rate (L/s) | Rated Pressure (MPa) | Max Pressure (MPa) | Throw Range | Max Elevation | Min Depression | Operation | Medium |
|---|---|---|---|---|---|---|---|---|---|
| Fire Water Monitor (Stainless Steel) |
PS8/40W | 40 | 0.8 | 1.6 | ≥65 m | ≥+60° | ≤–15° | Turbine-Worm (Worm-Gear) |
Water |
| PS10/50W | 50 | 1.0 | ≥70 m | ||||||
| PS10/60W | 60 | ≥75 m | |||||||
| PS10/80W | 80 | ≥85 m |
† Throw range measured at rated working pressure with straight jet nozzle. Actual range may vary with installation height and supply conditions.
Which Should I Choose?
PS Turbine-Worm vs PS Handle — When to Specify Each
✦ This Product
PS Turbine-Worm Monitor
- ✅ Self-locking worm-gear — nozzle holds aim without operator effort
- ✅ No aim drift under high reaction forces at 40–80 L/s
- ✅ Recommended from PS8/40W (40 L/s) upwards
- ✅ Essential at PS10/60W and PS10/80W — handle is impractical at these flows
- ✅ Monitor can be left unattended aimed at the fire target
- ✅ Preferred for all fixed main attack positions in large facilities
- ⚠️ Slower traverse than direct handle (by design — precision over speed)
Alternative
PS Handle Monitor
- ✅ Faster to traverse — direct handle gives instant response
- ✅ Simpler mechanism — lower cost, lower maintenance
- ✅ Best suited to PS8/30W and PS8/40W (30–40 L/s)
- ✅ Good for auxiliary or supplementary monitor positions
- ⚠️ No self-lock — nozzle drifts under reaction force if released
- ⚠️ Operator must hold handle continuously during discharge
- ⚠️ Not recommended above 40 L/s for prolonged operation
Product Features
Key Design Features
Self-Locking Worm-Gear
The worm-gear mechanism is mechanically irreversible — nozzle reaction force cannot back-drive the worm shaft. The nozzle stays exactly on target when the handwheel is released. Essential for unmanned or semi-attended installations at 40–80 L/s where nozzle drift would otherwise redirect the water stream away from the fire.
Independent Dual-Axis Drive
Separate worm-gear assemblies drive the horizontal rotation and vertical elevation axes independently. This gives precise, decoupled control — adjusting elevation does not affect azimuth and vice versa, which is critical for accurate directional fire attack from a distance.
85 m Straight-Jet Range
The PS10/80W achieves a throw range of ≥85 m at 1.0 MPa with the straight jet nozzle — the longest range in the PS Series. This allows a single monitor position to cover very large floor areas in high-bay warehouses, open tank farms or port quayside zones without repositioning.
Full SS 304 Stainless Body
The entire flow path — body, nozzle, fittings and rotation joint — is manufactured in SS 304 stainless steel. Provides long-term corrosion resistance in outdoor, coastal, marine and industrial environments without surface treatment, painting or re-coating throughout the product life.
Full 360° Horizontal Rotation
The monitor body rotates a full 360° on the horizontal axis and elevates from –15° depression to +60° above horizontal via the PZ base rotating joint. Complete coverage of the protected area from a single fixed position — no repositioning required during a fire incident.
Direct PS Handle Replacement
The PS Turbine-Worm and PS Handle Series share identical inlet flange dimensions and mount on the same PZ Series flanged base. Upgrading from a handle to a worm-gear monitor requires no pipework modification — unbolt the handle monitor and bolt the turbine-worm version in its place.
Where It's Used
Typical Applications
High-Bay Warehouses
PS10/80W turbine-worm monitors are specified at main attack positions in large-bay warehouses and logistics facilities. The ≥85 m throw range and self-locking aim allow a single operator to cover a full warehouse bay width and step back to safety while maintaining continuous water discharge.
Industrial Process Plants
Process areas, loading gantries, compressor stations and pump skids at industrial plants use PS Turbine-Worm monitors for high-flow cooling and suppression. The worm-gear locking allows pre-positioning during normal operations — the monitor is aimed at the highest-risk equipment and held in place ready for immediate use.
Power Generation Facilities
Turbine halls, transformer bays, cable tunnels and coal handling plants at power stations specify PS Turbine-Worm monitors for fire protection. High flow rates are required to cool large equipment masses and control fire spread in open, hard-to-access plant rooms where sprinkler coverage is limited.
Port & Shipyard Facilities
Container terminals, bulk cargo handling areas and dry-dock shipyard facilities install SS 304 turbine-worm monitors at elevated platform positions around quaysides and dry docks. The stainless body resists constant salt-spray exposure, and the worm-gear lock holds aim during extended quayside operations.
Steel Mills & Foundries
Steel mills, iron foundries and metal casting plants require monitors that can deliver high-volume water cooling quickly after a runout or furnace incident. PS10/60W and PS10/80W turbine-worm models are specified at tapping positions and ladle treatment bays where 60–80 L/s flow is required for effective cooling.
Elevated Platform Installations
When monitors are mounted on elevated platforms, towers or mezzanine levels, the worm-gear mechanism allows precise aiming from height without operator exposure to fire or heat. The self-locking feature is especially valuable when only brief attended operation is possible before conditions require personnel withdrawal.
FAQ
Frequently Asked Questions — PS Turbine-Worm Monitor
The PS Turbine-Worm is a fixed fire water monitor with a worm-gear (turbine-worm) handwheel mechanism for both horizontal rotation and vertical elevation. The worm-gear is self-locking — the nozzle holds its aim precisely even when the handwheel is released, because reaction force on the output cannot back-drive the worm shaft. It discharges water only and is the preferred specification for high-flow (40–80 L/s) fixed fire water monitor positions in industrial and large-space fire protection.
The PS Handle uses a direct handle — faster to traverse but with no self-lock, so the operator must hold it on target continuously. The PS Turbine-Worm uses a worm-gear handwheel that self-locks in position, holding aim without operator effort. The turbine-worm is recommended from 40 L/s upwards and is the only practical choice at 60–80 L/s where nozzle reaction forces make long-term handle operation tiring and inaccurate.
Select by required flow rate and range: PS8/40W (40 L/s, 0.8 MPa, ≥65 m) for moderate-flow supplementary positions; PS10/50W (50 L/s, 1.0 MPa, ≥70 m) for standard industrial positions; PS10/60W (60 L/s, 1.0 MPa, ≥75 m) for larger facilities; PS10/80W (80 L/s, 1.0 MPa, ≥85 m) for maximum range and flow on main attack positions at large industrial facilities. All models use the same turbine-worm mechanism and PZ base interface.
No — the PS Series is water only. It does not have an air-aspirating foam device. For foam-water combined capability, specify the PL Turbine-Worm Foam-Water Monitor instead. The PL and PS turbine-worm monitors share the same PZ base interface, so both can be installed in the same facility on identical pipe infrastructure.
Yes. Both versions share the same inlet flange and mount on the PZ Series base. Upgrading requires no pipework modification — unbolt the handle monitor and bolt the turbine-worm version in its place. This makes upgrading straightforward when flow rates or operational requirements increase after the initial installation.
The maximum throw range is ≥85 m, achieved by the PS10/80W at its rated working pressure of 1.0 MPa with the straight jet nozzle. The PS10/60W achieves ≥75 m, the PS10/50W ≥70 m and the PS8/40W ≥65 m. Switching to spray cone pattern will reduce range significantly — the spray setting is used for cooling and personnel protection rather than long-range attack.
