Audited Supplier
ZDB/Z2DB
Pressure Regulating
Superposition
Hydraulic
Pilot-Operated Type
Four Pressure Levels
Depending on Model
Depending on Model
31MPa
60L/Min
Rubber Cast Iron
Blue
-20~80 Celsius
Hydraulic
Standard
Hydraulic Oil
Online Support
Dingan
Strong Wooden Carton
Depending on Model
China Hebei Xingtai Ningjin
8481901000
Product Description
ZDB/Z2DB superimposed pilot relief valve has the functions of constant pressure relief, pressure stabilization, system unloading and protection.
(1)Z=Superposition
(2)2=Only for VC and VD with 2 insert relief valves
(3)DB=Pilot Operated Relief Valve
(4)6=Diameter 6
(5)Overflow function from → to
VA=A→T
VB=B→T
VP=P→T
VC=A→T and B→T
VD=A→B and B→A
(6)1=Knob
2=Adjusting screw with protective cover
3=Lockable knob with scale
7=Scaled knob
(7)L4X=L40-L49 Series
(L40 to L49 series mounting and connection dimensions remain unchanged)
(8)5 = Pressure adjustable up to 5 MPa
10=Pressure adjustable to 10MPa
20=Pressure adjustable up to 20MPa
31.5=Pressure adjustable to 31.5MPa
(9)Unmarked = Nitrile rubber seal
V = Fluorine rubber seal
(2)2=Only for VC and VD with 2 insert relief valves
(3)DB=Pilot Operated Relief Valve
(4)6=Diameter 6
(5)Overflow function from → to
VA=A→T
VB=B→T
VP=P→T
VC=A→T and B→T
VD=A→B and B→A
(6)1=Knob
2=Adjusting screw with protective cover
3=Lockable knob with scale
7=Scaled knob
(7)L4X=L40-L49 Series
(L40 to L49 series mounting and connection dimensions remain unchanged)
(8)5 = Pressure adjustable up to 5 MPa
10=Pressure adjustable to 10MPa
20=Pressure adjustable up to 20MPa
31.5=Pressure adjustable to 31.5MPa
(9)Unmarked = Nitrile rubber seal
V = Fluorine rubber seal
| Nominal flow rate | 60L/min |
| Maximum working pressure | 31MPa |
| Median back pressure | ≤1MPa |
| Working temperature | -20~80ºC |
| Hydraulic oil viscosity | 10~400mm²/s |
Hebei Ding'an Hydraulic Machinery Co., Ltd. is a professional company integrating the research, production and sales of hydraulic valves. It is an ISO9001:2000 quality management system certified enterprise. The company currently has fixed assets of more than 10 million yuan, covers an area of 16,000 square meters, has strong technical force, and has more than ten years of experience in the development and production of hydraulic valves. It can quickly and high-quality develop various mining and engineering machinery hydraulic valves according to customer requirements. 
