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W-Series fire fighting jockey pump set with air pressure tank and dual pumps

W-Series Fire Fighting Jockey Pump Set

W-Series Jockey Pump Set is designed to address situations where it is inconvenient to install a high-level water tank in a fire protection system or where an existing high-level water tank cannot meet the stable water pressure requirements at the most unfavorable point in the pipeline network. It complies with the National Standard of the People's Republic of China GB27898.3-2011.

Application

High-rise buildings compensates for vertical pressure loss.
Industrial facilities with extended fire pipelines.
Systems where high-level water tanks are impractical.

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W/G

Product Description

Working Principle

Product Structure

FAQ

Product Feature

W-Series Jockey Pump Set consists of water pumps, an air pressure tank (bladder/diaphragm-type tank), an electrical control cabinet, and necessary auxiliary components such as valves and pipelines. Typically, two pumps with identical performance are configured for mutual backup (one in use, one on standby). Under normal conditions, the two pumps alternate automatically. If one pump fails, the other takes over. The air pressure tank is an essential component for maintaining pressure during equipment shutdown. It supplies water to the fire protection pipeline network to sustain pressure when the equipment is idle and also functions as a pressure switch. The electrical control cabinet regulates the start and stop of the pumps based on pressure input signals, enabling automatic operation of the equipment.

1. Dual-Pump Redundancy (One Operates, One Standby)

Equipped with two identical pumps configured for automatic alternation to extend service life.
If the primary pump fails, the backup pump instantly takes over, ensuring uninterrupted operation.
2. Intelligent Pressure Control
Automatically starts/stops based on real-time pressure signals (via pressure sensors/switches).
Maintains pressure within the pre-set range (P3–P4) to compensate for minor leaks in the fire pipeline.
3. Seamless Transition to Firefighting Mode

During a fire, if pressure drops below the fire pump activation threshold (P2), the system:
(1) Stops the jockey pump.
(2) Activates the main fire pump while the pressure tank temporarily supplies water to bridge the gap until full firefighting flow is achieved.
4. Compact and Integrated Design

Includes all necessary components: pumps, air pressure tank, control cabinet, valves, and piping.
Pre-assembled on a common base for easy installation and maintenance.
Simple Structure, high efficiency, long-term using,reliability and precision, what's more, it can reduces energy waste and pipe stress.
5. Robust and Low-Maintenance
Corrosion-resistant materials (e.g., stainless steel/cast iron pumps, rubber-lined tanks).
Fail-safe valves: Check valves (prevent backflow), safety valves (overpressure protection), and soft connectors (vibration damping).
6. Real-Time Monitoring
Pressure gauges/sensors provide visible and electronic feedback.
Control cabinet displays operational status and fault alarms (e.g., pump failure, low pressure).

Model Meaning

Technical Parameters

Model Number	Fire Pump Model	Flow Rate(L/s)	Pressure(MPa)	Power(kW)	Air Pressure Tank
					Specifications	Effective Water Capacity(m3)
W5.0/0.50-G1.6	XBD10.0/1.9W-G	1.9	1.0	1.5	SQL1000x2400-1.6	0.3
W5.0/0.30-G1.6					SQL800x2270-1.6	0.15
W5.0/0.80-G1.6					SQL1200x2800-1.6	0.45
W2.0/0.45-G1.0	XBD4.6/2.4W-G	2.4	0.46	2.2	SQL1000x2400-1.0	0.3
W2.0/0.30-G1.0					SQL800x2270-1.0	0.15
W2.0/0.70-G1.0					SQL1200x2800-1.0	0.45
W1.5/0.45-G0.6	XBD3.4/2.4W-G	2.4	0.34	2.2	SQL1000x2400-0.6	0.3
W1.5/0.30-G0.6					SQL800x2270-0.6	0.15
W1.5/0.60-G0.6					SQL1200x2800-0.6	0.45
W1.5/0.45-L0.6	XBD3.4/4.3W-L	4.3	0.34	4	SQL1000x2400-0.6	0.3
W1.5/0.30-L0.6					SQL800x2270-0.6	0.15
W1.5/0.60-L0.6					SQL1200x2800-0.6	0.45

Working Principle

W-G working principle_副本

Below is a detailed explanation of its working principle:

1. Normal Operation (Pressure Maintenance Mode)

The jockey pump automatically starts when the system pressure drops below the pre-set lower limit (P3) due to minor leaks or water loss in the pipeline.
It delivers water into the fire protection network, compensating for pressure loss.
Excess water is stored in the air pressure tank (bladder/diaphragm type), compressing the air cushion inside.
Once pressure reaches the upper limit (P4), the pump stops, and the compressed air in the tank pushes water back into the system to maintain pressure.

2. Fire Emergency Mode

When a fire occurs, water demand surges, causing a rapid pressure drop below the fire pump activation threshold (P2).
The jockey pump stops operating, and the main fire pump starts to supply large volumes of water.
During the short delay before the main fire pump reaches full capacity, the pressure tank provides temporary water supply to prevent pressure loss.

Product Structure

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Item No.	Part Names	Item No.	Part Names
1	Pressure Gauge	8	Flexible Joint
2	Pressure Gauge	9	Check Valve
3	Pressure Sensor	10	Jockey Pump
4	Safety Valve	11	Steel Base
5	Ball Valve	12	Discharge Manifold
6	Air Pressure Tank	13	Suction Manifold
7	Butterfly Valve

FAQs

What Kind of pumps can be used as Jockey Pump?

For firefighting application, we suggest using vertical inline single stage pump or vertical multistage pump. Since the pressure lose won't be huge for normal operation, small flow type pump are suggested, ranging from 1L/S to 5 L/S
What's the material and connection way of pipeline and valve?

Our pipeline and valve standard material is cast steel and 304 stainless steel and copper as option. Valve will be flanged connection.
Clamping and threaded are also available upon request
What's the normal lead time?

One week for order less than 10 units, subject to quantity and special request
What's the warranty of this pump set

10 years for the diaphragm tanks and 2 years for the other component