Oil-free Dry Screw Air Compressor

The ULPPRO Oil-free Dry Screw Air Compressor is native to China, a direct-sales air compressor brand focused on stable system operation and full lifecycle value services. We establish ourselves with quality products, build trust through altruistic service, and achieve lasting success with inclusive, win-win cooperation.

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Product Description

Core Components Introduction

Industry-leading imported oil-free mainframe

a: The air compression chamber is completely separated from the oil chamber. On the air side, a wear-free sealing system with a stainless steel spring-loaded metal ring is used, while on the lubricating oil side, a wear-free sealing system with a copper labyrinth seal is employed. The two do not come into contact.

b: After the first stage of compression, the compressed air passing through the cooler contains moisture that cannot be fully separated. To prevent this moisture from corroding the surface of the second-stage compressor rotor, the second-stage rotor is made of stainless steel, ensuring greater reliability.

c: An industry-leading super coating (UITRACOAT) is applied to the rotors and the inner walls of the compression chamber. This effectively prevents issues such as softening or peeling that commonly occur with ordinary coatings like Teflon. It provides excellent corrosion resistance and helps reduce the meshing clearance. Throughout the entire lifecycle, there is no significant decline in air output.

d: Filtered lubricating oil is used in the housing partition cavity of the compressor unit for cooling. This ensures efficient cooling while avoiding the formation of scale that can occur with water cooling, thereby enhancing operational reliability.

Vector frequency converter

High utilization rate, detachable panel, switchable use, with memory function;

Comprehensive Protection: Provides protection against phase loss, phase-to-phase short circuit, ground short circuit, overcurrent, overvoltage, undervoltage, overload, and overtemperature.

The enhanced coating of the motor thermal protection circuit board is dust-proof and anti-corrosion.

Independent Cooling Air Duct Design.

Suspended installation for dust and corrosion resistance; low system heat generation; strong overload capability and unique current-limiting technology.

Proprietary High-Efficiency Control Program

Ultra-wide frequency design, providing a broader control range

Technical parameters for Oil-free Dry VFD Screw Air Compressor

Model	Power		Rated Pressure		Free Air Delivery			Weight		Dimension			Outlet size
	Power		Rated Pressure		Free Air Delivery			Weight		L	W	H	Outlet size
	kW	hp	bar	psig	l/s	m³/min	cfm	kg	lb	mm	mm	mm	inch/mm
ULPW-37AV-D	37	50	7	102	94	5.62	198	1450	3190	2345	1500	1900	G1½
ULPW-37AV-D	37	50	8	116	93	5.6	198	1450	3190	2345	1500	1900	G1½
ULPW-37AV-D	37	50	10	145	72	4.3	152	1450	3190	2345	1500	1900	G1½
ULPW-45AV-D	45	60	7	102	110	6.57	232	1550	3410	2345	1500	1900	G1½
ULPW-45AV-D	45	60	8	116	109	6.56	232	1550	3410	2345	1500	1900	G1½
ULPW-45AV-D	45	60	10	145	86	5.3	183	1550	3410	2345	1500	1900	G1½
ULPW-55AV-D	55	75	7	102	143	8.8	304	2050	4510	2400	1600	2000	DN50
ULPW-55AV-D	55	75	8	116	142	8.6	300	2050	4510	2400	1600	2000	DN50
ULPW-55AV-D	55	75	10	145	113	6.8	240	2050	4510	2400	1600	2000	DN50
ULPW-75WV-D	75	100	7	102	202	13	427	2170	4774	2400	1600	2000	DN65
ULPW-75WV-D	75	100	8	116	200	12.3	424	2170	4774	2400	1600	2000	DN65
ULPW-75WV-D	75	100	10	145	152	10	321	2170	4774	2400	1600	2000	DN65
ULPW-90WV-D	90	125	7	102	246	15.6	521	2300	5060	2400	1600	2000	DN65
ULPW-90WV-D	90	125	8	116	243	15.3	516	2300	5060	2400	1600	2000	DN65
ULPW-90WV-D	90	125	10	145	215	12.9	455	2300	5060	2400	1600	2000	DN65
ULPW-110WV-D	110	150	7	102	331	20	702	3400	7480	3100	2000	2200	DN80
ULPW-110WV-D	110	150	8	116	313	18.8	664	3400	7480	3100	2000	2200	DN80
ULPW-110WV-D	110	150	10	145	286	17.13	605	3400	7480	3100	2000	2200	DN80
ULPW-132WV-D	132	175	7	102	402	24.1	851	3500	7700	3100	2000	2200	DN80
ULPW-132WV-D	132	175	8	116	374	22.42	792	3500	7700	3100	2000	2200	DN80
ULPW-132WV-D	132	175	10	145	327	20	693	3500	7700	3100	2000	2200	DN80
ULPW-160WV-D	160	215	7	102	462	27.5	979	3600	7920	3100	2000	2200	DN80
ULPW-160WV-D	160	215	8	116	448	26.89	949	3600	7920	3100	2000	2200	DN80
ULPW-160WV-D	160	215	10	145	407	24.44	863	3600	7920	3100	2000	2200	DN80
ULPW-185WV-D	185	250	7	102	534	32.01	1130	4500	8800	4300	2200	2350	DN80
ULPW-185WV-D	185	250	8	116	494	30	1047	4500	8800	4300	2200	2350	DN80
ULPW-185WV-D	185	250	10	145	443	27	938	4500	8800	4300	2200	2350	DN80
ULPW-200WV-D	200	270	7	102	603	36.18	1278	5000	9900	4300	2200	2350	DN100
ULPW-200WV-D	200	270	8	116	588	35.3	1246	5000	9900	4300	2200	2350	DN100
ULPW-200WV-D	200	270	10	145	488	29.29	1034	5000	9900	4300	2200	2350	DN100
ULPW-225WV-D	225	300	7	102	649	38.96	1376	5600	11000	4700	2200	2350	DN100
ULPW-225WV-D	225	300	8	116	624	37.41	1321	5600	11000	4700	2200	2350	DN100
ULPW-225WV-D	225	300	10	145	566	33.95	1199	5600	11000	4700	2200	2350	DN100
ULPW-250WV-D	250	340	7	102	742	42.8	1572	6500	11440	5100	2200	2350	DN100
ULPW-250WV-D	250	340	8	116	688	41.26	1457	6500	11440	5100	2200	2350	DN100
ULPW-250WV-D	250	340	10	145	617	37.02	1307	6500	11440	5100	2200	2350	DN100
ULPW-280WV-D	280	380	7	102	817	49	1730	6700	14771	5100	2200	2350	DN100
ULPW-280WV-D	280	380	8	116	750	45	1589	6700	14771	5100	2200	2350	DN100
ULPW-280WV-D	280	380	10	145	692	41.5	1465	6700	14771	5100	2200	2350	DN100
ULPW-315WV-D	315	425	7	102	833	54	1764	6900	14300	5100	2200	2350	DN125
ULPW-315WV-D	315	425	8	116	831	53.5	1760	6900	14300	5100	2200	2350	DN125
ULPW-315WV-D	315	425	10	145	749	45	1586	6900	14300	5100	2200	2350	DN125

Technical parameters for Oil-free Dry Fixed-speed Screw Air Compressor

Model	Power		Rated Pressure		Free Air Delivery			Weight		Dimension			Outlet size
	Power		Rated Pressure		Free Air Delivery			Weight		L	W	H	Outlet size
	kW	hp	bar	psig	l/s	m³/min	cfm	kg	lb	mm	mm	mm	inch/mm
ULPW-37A-D	37	50	7	102	94	5.62	198	1450	3190	2345	1500	1900	G1½
ULPW-37A-D	37	50	8	116	93	5.6	198	1450	3190	2345	1500	1900	G1½
ULPW-37A-D	37	50	10	145	72	4.3	152	1450	3190	2345	1500	1900	G1½
ULPW-45A-D	45	60	7	102	110	6.57	232	1550	3410	2345	1500	1900	G1½
ULPW-45A-D	45	60	8	116	109	6.56	232	1550	3410	2345	1500	1900	G1½
ULPW-45A-D	45	60	10	145	86	5.3	183	1550	3410	2345	1500	1900	G1½
ULPW-55A-D	55	75	7	102	143	8.8	304	2050	4510	2400	1600	2000	DN50
ULPW-55A-D	55	75	8	116	142	8.6	300	2050	4510	2400	1600	2000	DN50
ULPW-55A-D	55	75	10	145	113	6.8	240	2050	4510	2400	1600	2000	DN50
ULPW-75W-D	75	100	7	102	202	13	427	2170	4774	2400	1600	2000	DN65
ULPW-75W-D	75	100	8	116	200	12.3	424	2170	4774	2400	1600	2000	DN65
ULPW-75W-D	75	100	10	145	152	10	321	2170	4774	2400	1600	2000	DN65
ULPW-90W-D	90	125	7	102	246	15.6	521	2300	5060	2400	1600	2000	DN65
ULPW-90W-D	90	125	8	116	243	15.3	516	2300	5060	2400	1600	2000	DN65
ULPW-90W-D	90	125	10	145	215	12.9	455	2300	5060	2400	1600	2000	DN65
ULPW-110W-D	110	150	7	102	331	20	702	3400	7480	3100	2000	2200	DN80
ULPW-110W-D	110	150	8	116	313	18.8	664	3400	7480	3100	2000	2200	DN80
ULPW-110W-D	110	150	10	145	286	17.13	605	3400	7480	3100	2000	2200	DN80
ULPW-132W-D	132	175	7	102	402	24.1	851	3500	7700	3100	2000	2200	DN80
ULPW-132W-D	132	175	8	116	374	22.42	792	3500	7700	3100	2000	2200	DN80
ULPW-132W-D	132	175	10	145	327	20	693	3500	7700	3100	2000	2200	DN80
ULPW-160W-D	160	215	7	102	462	27.5	979	3600	7920	3100	2000	2200	DN80
ULPW-160W-D	160	215	8	116	448	26.89	949	3600	7920	3100	2000	2200	DN80
ULPW-160W-D	160	215	10	145	407	24.44	863	3600	7920	3100	2000	2200	DN80
ULPW-185W-D	185	250	7	102	534	32.01	1130	4500	8800	4300	2200	2350	DN80
ULPW-185W-D	185	250	8	116	494	30	1047	4500	8800	4300	2200	2350	DN80
ULPW-185W-D	185	250	10	145	443	27	938	4500	8800	4300	2200	2350	DN80
ULPW-200W-D	200	270	7	102	603	36.18	1278	5000	9900	4300	2200	2350	DN100
ULPW-200W-D	200	270	8	116	588	35.3	1246	5000	9900	4300	2200	2350	DN100
ULPW-200W-D	200	270	10	145	488	29.29	1034	5000	9900	4300	2200	2350	DN100
ULPW-225W-D	225	300	7	102	649	38.96	1376	5600	11000	4700	2200	2350	DN100
ULPW-225W-D	225	300	8	116	624	37.41	1321	5600	11000	4700	2200	2350	DN100
ULPW-225W-D	225	300	10	145	566	33.95	1199	5600	11000	4700	2200	2350	DN100
ULPW-250W-D	250	340	7	102	742	42.8	1572	6500	11440	5100	2200	2350	DN100
ULPW-250W-D	250	340	8	116	688	41.26	1457	6500	11440	5100	2200	2350	DN100
ULPW-250W-D	250	340	10	145	617	37.02	1307	6500	11440	5100	2200	2350	DN100
ULPW-280W-D	280	380	7	102	817	49	1730	6700	14771	5100	2200	2350	DN100
ULPW-280W-D	280	380	8	116	750	45	1589	6700	14771	5100	2200	2350	DN100
ULPW-280W-D	280	380	10	145	692	41.5	1465	6700	14771	5100	2200	2350	DN100
ULPW-315W-D	315	425	7	102	833	54	1764	6900	14300	5100	2200	2350	DN125
ULPW-315W-D	315	425	8	116	831	53.5	1760	6900	14300	5100	2200	2350	DN125
ULPW-315W-D	315	425	10	145	749	45	1586	6900	14300	5100	2200	2350	DN125

Technical parameters for Oil-free Dry Low-pressure Screw Air Compressor

Model	Power		Rated Pressure		Free Air Delivery			Weight		Dimension			Outlet size
	Power		Rated Pressure		Free Air Delivery			Weight		L	W	H	Outlet size
	kW	hp	bar	psig	l/s	m³/min	cfm	kg	lb	mm	mm	mm	inch/mm
ULPW-55AL-D	55	75	2.5	36	251	15.04	531	2000	4400	2395	1600	2020	DN100
ULPW-55AL-D	55	75	3.5	51	204	12.22	432	2000	4400	2395	1600	2020	DN100
ULPW-75AL-D	75	100	2.5	36	352	21.15	747	3000	6600	3095	1990	2200	DN100
ULPW-75AL-D	75	100	3.5	51	304	18.24	644	3000	6600	3095	1990	2200	DN100
ULPW-90AL-D	90	125	2.5	36	403	24.15	853	3200	7040	3095	1990	2200	DN100
ULPW-90AL-D	90	125	3.5	51	349	20.95	740	3200	7040	3095	1990	2200	DN100
ULPW-110AL-D	110	150	2.5	36	600	35.99	1271	3800	8360	3670	2200	2200	DN125
ULPW-110AL-D	110	150	3.5	51	396	23.77	839	3800	8360	3670	2200	2200	DN125
ULPW-132AL-D	132	175	2.5	36	703	42.2	1490	4100	9020	3670	2200	2200	DN125
ULPW-132AL-D	132	175	3.5	51	593	35.6	1257	4100	9020	3670	2200	2200	DN125
ULPW-160WL-D	160	215	2.5	36	894	53.64	1894	4300	9460	4270	2200	2300	DN200
ULPW-160WL-D	160	215	3.5	51	697	41.81	1476	4300	9460	4270	2200	2300	DN200
ULPW-185WL-D	185	250	2.5	36	976	58.59	2069	4900	10780	4270	2200	2300	DN200
ULPW-185WL-D	185	250	3.5	51	803	48.21	1702	4900	10780	4270	2200	2300	DN200
ULPW-200WL-D	200	270	2.5	36	1061	63.63	2247	5000	11000	4270	2200	2300	DN200
ULPW-200WL-D	200	270	3.5	51	884	53.06	1874	5000	11000	4270	2200	2300	DN200
ULPW-250WL-D	250	340	2.5	36	1324	79.44	2805	5600	12320	4555	2200	2300	DN200
ULPW-250WL-D	250	340	3.5	51	1049	62.95	2223	5600	12320	4555	2200	2300	DN200