Purpose and characteristics 

The JFM25 Full Load Sensitive MDCV is pre-valve control type full load sensitive MDCV which is newly developed by our company, by referring to the domestic and foreign load-sensitive hydraulic control technologies and according to the practical application of various kinds of domestic engineering machinery and construction machinery. It has remarkable features of novel structure, delicate appearance, diversified control functions, high allowable pressure, large flow, high control precision, obvious energy saving effect, high universality, convenient maintenance and applicability to fixed-displacement pump system and variable-displacement pump system, and is an upgrade product of domestic or imported load-sensitive MDCVs of QF28, DP, TDV and RTPS series which are often used domestically at present. It is of perfect cost performance and promotion value to the application of low-carbon, energy-saving and environment-friendly engineering machinery, and is applicable to crane truck, piling machinery, engineering drill rig, tunnel machinery, high-speed rail machinery, ship machinery and various kinds of medium and large engineering machinery.

Model description

Performance parameters

 Slide valve function 

Control and positioning return mode 

Oil line description 

Control oil line pressure limiting valve and external port at ports A and B

Table of port dimensions

Note: Control oil external ports Ya and Yb at ports A and B are both plugged by NPT1/8 when delivery, and may be opened as required.

The principle is applicable to variable-displacement pump.

The principle is applicable to fixed-displacement pump. 

Outline drawing of JFM-L25 Full Load Sensitive MDCV 

Hydraulic schematic 

Table of port dimensions