CYZ-A-L Self-Priming Centrifugal Oil Pump

Model NO. CYZ-A-L Self-Priming Centrifugal Oil Pump

Pump material: Cast Iron, Stainless Steel
（Standardly equipped with a copper impeller）

Inlet & Outlet Size: DN25 - DN300

Flow Range: 3.2 - 500 m³/h

Head Range: 12 - 80 m

Motor Power: 0.75 - 110 kW

Suction Lift：5.0-6.5m

Priming Time: 1.2 - 2 mins for 5m lift

Speed: 1450 r/min, 2900 r/min

Voltage: 220V / 380V / 415V / 440V / 460V

What is CYZ-A-L Self-Priming Centrifugal Oil Pump？

Designed for high-efficiency fuel handling, the CYZ-A-L vertical inline pump delivers reliable performance in space-critical applications. As a heavy-duty self priming oil pump, it is specifically engineered for land oil depots, tank trucks, and marine vessels. Operating as a versatile diesel transfer pump, it safely handles gasoline, kerosene, diesel, aviation fuel, seawater, and clean water within medium temperatures from -20°C to 80°C. For chemical liquid transport, corrosion-resistant mechanical seals are also available.

High Efficiency & Quick Priming: Built with a simplified internal structure for stable operation and easy maintenance. This high-performance self priming oil pump eliminates the need for bottom foot valves—simply pre-fill the pump chamber before initial startup for rapid, reliable fluid transfer.
Heavy-Duty Fuel Transfer: Engineered as an industrial diesel transfer pump, it features hard-alloy mechanical seals for long-lasting durability. It requires no safety valves on discharge lines or foot valves on suction pipes, significantly streamlining pipeline installation and reducing operational overhead.
Space-Saving Vertical Inline Layout: Designed so you can mount the pump direct into the pipeline like a valve. This vertical inline configuration allows engineers to connect the pump direct to existing pipe networks, drastically saving floor space—making it ideal for tight spaces like ship engine rooms and compact compartments.

Model Meaning

Self-Priming Oil Pump CYZ-A-L Series Model Nomenclature and Coding Guide | JPZX

Model	Flow Rate		Head (m)	Suction Lift (m)	Speed (r/min)	Self-priming Time (min/5m)	Power(kW)		Pump Dia. (mm)		Weight (kg)
Model	(m³/h)	(L/s)	Head (m)	Suction Lift (m)	Speed (r/min)	Self-priming Time (min/5m)	Shaft Power	Motor Power	Inlet	Outlet	Weight (kg)
25CYZ-A-L-20	3.2	0.9	20	6.5	2900	1.9	0.46	0.75	25	25	72
25CYZ-A-L-32	3.2	0.9	32	6.5	2900	1.8	1.8	1.1	25	25	80
40CYZ-A-L-20	6.3	1.8	20	6.5	2900	1.9	0.87	1.1	40	32	85
40CYZ-A-L-40	10	2.8	40	6.5	2900	1.5	2.7	4	50	40	140
50CYZ-A-L-12	15	4.2	12	6.5	2900	2.4	1.1	1.5	50	50	90
50CYZ-A-L-20	18	5	20	6.5	2900	1.9	1.8	2.2	50	50	98
50CYZ-A-L-30	20	5.6	30	6.5	2900	1.5	2.6	3	50	50	140
50CYZ-A-L-35	14	3.9	35	6.5	2900	1.5	2.7	4	50	50	145
50CYZ-A-L-40	10	2.8	40	6.5	2900	1.5	2.7	4	50	50	145
50CYZ-A-L-50	12.5	3.5	50	6.5	2900	1.4	4.3	5.5	50	50	160
50CYZ-A-L-60	15	4.2	60	6.5	2900	1.3	6.2	7.5	50	50	190
50CYZ-A-L-75	20	5.6	75	6.5	2900	1.3	9.8	11	50	50	240
65CYZ-A-L-15	30	8.3	15	6.5	2900	2	1.9	3	65	50	100
65CYZ-A-L-32	25	6.9	32	6	2900	1.5	4.4	5.5	65	50	165
80CYZ-A-L-13	35	9.7	13	6	2900	3.4	1.9	3	80	65	107
80CYZ-A-L-17	43	12	17	6	2900	1.8	3.1	4	80	65	156
80CYZ-A-L-22	40	11.1	22	6	2900	1.9	4.4	5.5	80	65	169
80CYZ-A-L-25	50	13.9	25	6	2900	1.5	5.2	7.5	80	80	177
80CYZ-A-L-32	50	13.9	25	6	2900	1.5	6.8	7.5	80	80	180
80CYZ-A-L-70	60	16.7	70	6	2900	1.2	20.1	22	80	80	333
100CYZ-A-L-20	100	27.8	20	6	2900	1.8	7.8	11	100	80	258
100CYZ-A-L-40	100	27.8	40	6	2900	1.8	16.3	22	100	100	455
100CYZ-A-L-40A	100	27.8	40	6	1450	1.5	18.5	22	100	80	520
100CYZ-A-L-65	100	27.8	65	6	2900	1.8	27.7	30	100	100	620
100CYZ-A-L-75	100	19.4	75	6	2900	1.8	24.2	30	100	100	639
150CYZ-A-L-55	170	47.2	55	5	2900	1.8	39.2	45	150	100	830
150CYZ-A-L-65	170	47.2	65	5	2900	1.3	46.3	55	150	100	957
150CYZ-A-L-80	160	44.4	80	5	2900	1.2	53.6	55	150	100	986
200CYZ-A-L-63	280	77.8	63	5	1450	1.5	73.9	90	200	150	1338
250CYZ-A-L-50	400	111.1	50	5	1450	2	80	90	250	200	1486
300CYZ-A-L-50	500	138.9	50	5	1450	2	97.3	110	300	250	1728

Q1: What is the primary operational advantage of the CYZ-A-L close-coupled design compared to standard oil pumps?

A: The CYZ-A-L combines explosion-proof oil transfer capability with a compact close-coupled structure. By mounting the pump directly to the motor flange, it saves up to 30% floor footprint, eliminates shaft misalignment issues during transport or installation, and significantly reduces operational noise and vibration in tight spaces like oil tank trucks or marine vessels.

Q2: Why is a copper impeller standardly equipped, and can it be used safely in explosive environments?

A: Yes. Standardly equipped with a copper (bronze) impeller, the CYZ-A-L prevents mechanical friction sparks during high-speed rotation or accidental metal-on-metal contact. Combined with an explosion-proof motor, it fully complies with safety requirements for pumping highly volatile media like gasoline, kerosene, diesel, and aviation fuel.

Q3: How fast is the priming cycle, and how does it ensure reliable liquid draw from underground fuel tanks?

A: The CYZ-A-L offers an effective suction lift of 5.0 meters (can be equipped with a vacuum-assisted siphon tank to increase suction head), completing self-priming in just 5 minutes for a 5 m lift. The internal oil-gas separation chamber quickly purges air from the suction line without requiring external vacuum pumps or priming valves.

Q4: Is manual priming required prior to every oil transfer session?

A: No. You only need to fill the pump casing with the liquid medium once before the initial installation. The built-in storage cavity retains sufficient oil inside the casing after shutdown, enabling automatic, safe self-priming for all subsequent start-ups.

Q5: What pump casing material options are available for corrosive chemical solvents or fuel additives?

A: We offer Cast Iron for standard fuels and Stainless Steel (304/316/316L) for corrosive chemicals or marine fuel applications. Paired with customized mechanical seals (Silicon Carbide/Viton), the pump handles fluid temperatures ranging from -20°C to +80°C and fluid viscosities up to 70 cSt.

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