Model 4D-SY(6.3—80MPa)electric hydraulic test pump is the up-to-date series product designed by the Joint Design Group for Hydraulic Test Pump of the General Machinery Research Institute under the Ministry of Machine-Building Industry. It features high level of "Mechanization, Electrification and Automation", long service life, stable performance, flexibility and lightweight that the previous products have, additionally, a drive unit and cross-like converter are added. Therefore, all the performance indicators of this series product have met the requirements; various performances become more stable and reliable with safe and easy operation and power efficiency. In its structure, an enclosed water tank is used, thereby reducing the height of the whole unit and making it more compact and attractive.

Model 4D-SY(6.3—80MPa) electric hydraulic test pump is mainly used in hydrostatic test for various pressure containers, oxygen cylinder, pipe, valve and steam boiler. It is a device in the new technology of processing and high pressure source for liquids in the lab.

The device is specially designed with clean water and emulsion livid of 5-60℃ and oil of viscosity no more than 45 mm²/s as the working media. The liquid is filled up quickly and pressure goes higher immediately when doing the testing initially. It is to reduce the testing time, has great flow volume. When the pressure is over 1.6Mpa (the pressure can be automatically adjusted lower), the flow volume is automatically reduced in order to keep the testing slow and stable. Thus the product has two flow volumes under high and low pressure, and it changes automatically. Any kind of pressure testing can be performed under the rated pressure output. Its working temperature is 5-60℃.

The series hydraulic test pump has seven models and its basic parameters are shown in Table 1. When selecting the hydraulic test pump, the rated pressure should be chosen based on the testing pressure needed. The flow requirement shall also be considered.

Table 1

MODEL	rated exhaust pressure MPa	Flux L/h		Plunger Diameter		Reciprocating time	mating Motor powder KW	Overall Size LxWxH (mm)	Weight kg
		High Pressure	Low pressure	High pressure	Low pressure
4D-SY160/6.3	6.3	160	530	32	45	51	1.1 1.1 1.1 3	815×480×1055	215
4D-SY100/10	10	100	450	25
4D-SY63/16	16	63	400	20
4D-SY40/25	25	40	380	16
4D-SY35/35	35	35	370	15			1.5
4D-SY30/40	40	30	360	14			1.5 1.5 2.2	840×480×1055
4D-SY22/63	63	22	340	12
4D-SY16/80	80	16	340	10

Motor-driven pressure test pump is a kind of four plunger piston and reciprocating pressure test pump. It is specially used in the field of hydraulic pressure or oil pressure sealing test, strength test for vessel, pipeline equipment, boiler system, valves and other machinery, instrument spare parts. This pump is suitable for all kinds of laboratory room and industrial construction field.

MODEL	FOB UNIT PRICE (RMB)	rated exhaust pressure MPa	Flux L/h		Plunger Diameter		Reciprocating time	mating Motor powder KW	Overall Size LxWxH (mm) High Pressure	Weight kg Low pressure
			High Pressure	Low pressure	High pressure	Low pressure
4D-SY560/3.5	9500	3.5	560	1120	46	46	42	3	1020×470×1335	215
4D-SY44/35	9000	35	44	592	13