15.11.2025
AGRITECHNICA 2025
Detail
Check valves
Check valves
Trading company "Motorimpex" is a leading supplier of hydraulic valves in Ukraine. Most of the product manufacturers are represented exclusively.
A significant portion of the product models is constantly in stock for immediate supply. All products presented in the technical catalogs are available for order.
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Product code: 05146602
Brand -
Oleodinamica Mozioni
DN 6
maximum working pressure: 320 bar
maximum flow rate: 40 l/min
Product code: 05146603
Brand -
Oleodinamica Mozioni
DN 10
maximum working pressure: 320 bar
maximum flow rate: 100 l/min
Product code: 05146604
Brand -
Oleodinamica Mozioni
DN 16
maximum working pressure: 320 bar
maximum flow rate: 200 l/min
Product code: 05130626
Brand -
Oleodinamica Marchesini
G1/8–G2
maximum working pressure: 350 bar
maximum flow rate: 650 l/min
Product code: 05120523
Brand -
Ponar
DN 6–40
G1/4–G2
maximum working pressure: 400 bar
maximum flow rate: 450 l/min
Product code: 05120524
Brand -
Ponar
M16x1.5, M22x1.5, M33x2, M42x2, M48x2
maximum working pressure: 325 bar
maximum flow rate: 175 l/min
Product code: 05120519
Brand -
Ponar
DN 6
maximum working pressure: 350 bar
maximum flow rate: 20 l/min
Product code: 05120520
Brand -
Ponar
DN 10
maximum working pressure: 350 bar
maximum flow rate: 60 l/min
Product code: 05120521
Brand -
Ponar
DN 20
maximum working pressure: 350 bar
maximum flow rate: 200 l/min
Product code: 05120517
Brand -
Ponar
DN 6
maximum working pressure: 350 bar
maximum flow rate: 60 l/min
Product code: 05120522
Brand -
Ponar
DN 32
maximum working pressure: 350 bar
maximum flow rate: 400 l/min
Product code: 05120518
Brand -
Ponar
DN 10
maximum working pressure: 350 bar
maximum flow rate: 120 l/min
Product code: 05120511
Brand -
Ponar
M22x1.5
maximum working pressure: 290 bar
maximum flow rate: 40 l/min
Product code: 05120515
Brand -
Ponar
discontinued
DN 20
maximum working pressure: 320 bar
maximum flow rate: 100 l/min
Product code: 05120516
Brand -
Ponar
DN 32
maximum working pressure: 320 bar
maximum flow rate: 360 l/min
Product code: 05120512
Brand -
Ponar
M18x1.5
maximum working pressure: 315 bar
maximum flow rate: 30 l/min
Product code: 05120513
Brand -
Ponar
M22x1.5
maximum working pressure: 315 bar
maximum flow rate: 40 l/min
Product code: 05120514
Brand -
Ponar
M33x2
maximum working pressure: 350 bar
maximum flow rate: 150 l/min
Product code: 05130627
Brand -
Oleodinamica Marchesini
G1/4–G2
maximum working pressure: 350 bar
maximum flow rate: 650 l/min
Product code: 05130624
Brand -
Oleodinamica Marchesini
G1/4, G3/8, G1/2, G3/4
maximum working pressure: 350 bar
maximum flow rate: 80 l/min
Product code: 05130625
Brand -
Oleodinamica Marchesini
G3/8, G1/2
maximum working pressure: 350 bar
maximum flow rate: 55 l/min
Product code: 05241125
Brand -
Atos
G1/4–G11/4
maximum working pressure: 400 bar
maximum flow rate: 500 l/min
Product code: 05241124
Brand -
Atos
DN 6 or 10
maximum working pressure: 350 bar
maximum flow rate: 120 l/min
Product code: 05241123
Brand -
Atos
G1/4, G3/8, G1/2
maximum working pressure: 350 bar
maximum flow rate: 95 l/min
Product code: 05241122
Brand -
Atos
M8x1
maximum working pressure: 350 bar
maximum flow rate: 5 l/min
Product code: 05422248
Brand -
Bieri
G1/8, G1/4, G3/8, 9/16–18 UNF
maximum working pressure: 700 bar
maximum flow rate: 45 l/min
Product code: 05392835
Brand -
Hydac
DN 6
maximum working pressure: 350 bar
maximum flow rate: 50 l/min
Product code: 05392836
Brand -
Hydac
DN 10
maximum working pressure: 350 bar
maximum flow rate: 100 l/min
Product code: 05392838
Brand -
Hydac
G1/8–G2
maximum working pressure: 350 bar
maximum flow rate: 600 l/min
Product code: 05392837
Brand -
Hydac
DN 6–40
maximum working pressure: 350 bar
maximum flow rate: 600 l/min
Product code: 05392821
Brand -
Hydac
9/16–18 UNF
maximum working pressure: 350 bar
maximum flow rate: 20 l/min
Product code: 05392824
Brand -
Hydac
3/4–16 UNF
maximum working pressure: 420 bar
maximum flow rate: 38 l/min
Product code: 05392825
Brand -
Hydac
3/4–16 UNF
maximum working pressure: 350 bar
maximum flow rate: 38 l/min
Product code: 05392826
Brand -
Hydac
7/8–14 UNF
maximum working pressure: 420 bar
maximum flow rate: 80 l/min
Product code: 05392827
Brand -
Hydac
7/8–14 UNF
maximum working pressure: 350 bar
maximum flow rate: 80 l/min
Product code: 05392828
Brand -
Hydac
11/16–12 UNF
maximum working pressure: 420 bar
maximum flow rate: 120 l/min
Product code: 05392829
Brand -
Hydac
1 5/16–12 UNF
maximum working pressure: 420 bar
maximum flow rate: 165 l/min
Product code: 05392830
Brand -
Hydac
G1/8–G1/2
maximum working pressure: 350 bar
maximum flow rate: 60 l/min
Product code: 05392831
Brand -
Hydac
M20x1.5
maximum working pressure: 350 bar
maximum flow rate: 38 l/min
Product code: 05392832
Brand -
Hydac
M20x1.5
maximum working pressure: 350 bar
maximum flow rate: 38 l/min
Product code: 05392833
Brand -
Hydac
M22x1.5
maximum working pressure: 350 bar
maximum flow rate: 100 l/min
Product code: 05392834
Brand -
Hydac
M22x1.5
maximum working pressure: 350 bar
maximum flow rate: 100 l/min
Product code: 05402401
Brand -
Walvoil
G1/4–G1 1/2
maximum working pressure: 400 bar
maximum flow rate: 350 l/min
Product code: 05402397
Brand -
Walvoil
G1/2–G1
maximum working pressure: 400 bar
maximum flow rate: 160 l/min
Product code: 05402402
Brand -
Walvoil
G1/4–G1
maximum working pressure: 400 bar
maximum flow rate: 150 l/min
Product code: 05402398
Brand -
Walvoil
G1/4–G3/4
maximum working pressure: 400 bar
maximum flow rate: 150 l/min
Product code: 05402400
Brand -
Walvoil
G1/2, G3/8, G3/4
maximum working pressure: 350 bar
maximum flow rate: 70 l/min
Product code: 05200929
Brand -
HidroPnevmoTehnika
G1/4, G3/8, G1/2
maximum working pressure: 320 bar
maximum flow rate: 40 l/min
Category description
Cylinder hydraulic lock – this is a controlled check valve that acts as an element of the hydraulic line. It is located, as a rule, between the hydraulic distributor and the hydraulic cylinder. It is used to ensure that, in the presence of control, the working fluid is passed in two directions, and in its absence – in one.
What is a hydraulic lock for?
The purpose of the valve is as follows:
- Closing fluid under pressure in some sections of the hose. This is necessary in order to hold the hydraulic cylinder in the desired position.
- Crash recovery in case of violation of the integrity of the system. If the tightness of the hydraulic line is not observed, the pressure in the system drops sharply, and the hydraulic lock prevents complete depressurization.
- Prevention of movement of mechanisms in the event of a decrease in pressure. For this purpose, a hydraulic lock is installed at the outlet of cylindrical cavities.
- Preventing the movement of the output links of the line, which are caused by leaks.
Thus, the hydraulic cylinder lock serves to ensure the safety of the system and its stable operation.
The principle of operation of hydraulic locks and their types
In the absence of control signals, the hydraulic lock begins to function on the principle of a check valve: oil is supplied only in one direction through the entire device. When the control signal is resumed, the hydraulic actuator passes the working fluid in both directions.
Based on the number of body valves, one-way and two-way locks are distinguished.
The one-sided action hydraulic lock structurally consists of the following elements:
- saddle;
- locking element – cone or ball;
- spring;
- piston.
It is mainly used on aerial platforms and loaders where there is no need to completely close the lowering line. The unit locks the hydraulic line receiving the load when the distributor is in the neutral position.
As part of a double-acting hydraulic lock:
- 2 shut-off and control balls;
- 1 control element;
- 2 springs.
This type of lock is universal, as it can lock the hydraulic line for both lifting and lowering. Its purpose – ensuring a stationary state in the neutral position of the distributor, when liquid pressure on the cylinder occurs from both directions.
Areas of application of hydraulic locks
This hose element is applicable in the following industries:
- Industrial production, where fixation of the hydraulic cylinder in a certain position is required. These can be numerically controlled machines to hold the position of the desktop or tool.
- Agricultural and construction machinery. The hydraulic lock blocks the hydraulic cylinder in the desired position, which prevents accidental lowering or lifting of the working body.
- Automotive engineering. Hydraulic locks are used in systems for lifting and lowering truck bodies.
- Power engineer. Fixing hydraulic cylinders in hydro turbines or hydro power plants allows you to control hydro units, ensuring reliable and stable operation.
- Repair and maintenance. The lock is necessary for the convenience and safety of repairing hydraulic cylinders.
Do you want to buy a hydraulic lock for a hydraulic cylinder at a nice price? Here you will find products with the required bandwidth for your purposes.
Our consultants will help you make a choice and buy a hydraulic lock that best suits your requirements. We offer delivery to any city in Ukraine in the shortest possible time. Get in touch!
Product code: 501026998
Brand -
Kozmaksan
pulling force: 6.8 t
flow rate: 60 l/min
working pressure: 155 bar
rope: 25 m x Ø 12 mm
Product code: 501027001
Brand -
Kozmaksan
pulling force: 4.5 t
motor displacement: 50 cm3/rev
flow rate: 5 - 45 l/min
rope: 25 m x Ø 10 mm
Product code: 201017018
Brand -
OMFB
maximum working pressure: 290 bar
maximum displacement: 122.72 cm3/rev
Product code: 201017006
Brand -
OMFB
maximum working pressure: 400 bar
maximum displacement of section: 75.1 cm3/rev
Product code: 12146986
Brand -
Oleodinamica Mozioni
DN 6, 10
maximum working pressure: 315 bar
maximum flow rate: 180 l/min
Product code: 11806588
Brand -
HST
capacity: 0.075–4 l
maximum working pressure: 350 bar
Product code: 05356705
Brand -
OMT
G3/8
maximum working pressure: 350 bar
Product code: 27666796
Brand -
Motorimpex
DN 10
G1/4
maximum working pressure: 350 bar
maximum flow rate: 120 l/min
Product code: 521016991
Brand -
OMFB
for ZF trucks
maximum continuous torque: 300 N∙m
Product code: 55776474
Brand -
Airneo
G1/8, М5х0,8, G1/4, G3/8, G1/2
scheme: 5/2, 5/3
max. number of cycles per sec.: 5
response time: 0,05 sec
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