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HYDRAULIC CHECK VALVES SPECIFICATIONS

Home / Products / Hydraulic Check Valves / Check Valve Specifications
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Hydraulic Check Valves

Check valves block an oil flow in one direction and allow it in the other direction. They are a type of shutoff valve.  The check valve is inserted when an oil flow shall be allowed in one direction only. Meanwhile, the usage of check valves prevents backflow of the fluid.

Advantages at a Glance:

  • Spherical shell
  • Available as screw-in or caged version
  • Nominal size 1/16 – 1/8 – 1/4 – 3/8 – 1/2 – 3/4
  • Working pressure 10,000 psi
  • BSP or metric thread

The HYTORC-check valves are available with a screw-in or caged design. Even so, both designs can be obtained in two flow directions: with the screw-in direction closed or with free-flow. The spherical cap remains reliably tight in every position, in case of multiple switching cycles and under severe stress.

The HYTORC check valve easily screws into a regular hole (Dimensions screw-in drill). The screw-in check valves are sealed through an edge sealing which is turned to the cage. The edge sealing, together with the drill draft, forms a gap-free chamber for the O-Ring. The gap-free chamber and the O-Ring are repeatable sealing.

The valve is made of a high-strength hardened steel. Moreover, the ball seat is specially treated and the spherical shell is manufactured with a high tensile hardened and polished ball bearing ball. Thus, the design of the check valves is compact and economical which saves space and offers simple installation.

Use the widget tool below to find the right check valve type for your application.

Check Valve Type Selector Widget

Then refer to the drop down menus to find the technical information for your desired check valve model.

Technical Data

Permissible Operating Pressureup to 10,000 psi (700 bar) (lock pressure)
Permissible Temperature–40 to +176 °F (–40º +80°C)
Viscosity5–500 cSt
Installation Positionany
MaterialBody: normal and stainless Steel Gasket: NBR rubber

Screw-In Check Valve

Order No.

Type

G

L

a

n

z x d

o-ring

12 011 102

RVA 2-M

M 6

6

3.4

3.4

4 x 1.2

2.5 x 1

12 011 103

RVA 3-M

M 8×1

6

3.3

4.7

6 x 1.6

4 x 1

12 011 104

RVA 4
(RVA 4-M)

G 1/8
M 10×1

6.7

3.5

6

6 x 1.8

6 x 1

12 011 106

RVA 6
(RVA 6-M)

G 1/4
M 14×1.5

8.2

4.8

8.9

8 x 2.15

9 x 1

12 011 108

RVA 8
(RVA 8-M)

G 3/8
M 18×1.5

10.1

5.6

10.8

8 x 3.2

11 x 1.5

12 011 110

RVA 10
(RVA 10-M)

G 1/2
M 22×1.5

11.6

6.8

14 (14.5)

8 x 3.8

14 x 1.5

12 011 116

RVA 16
(RVA 16-M)

G 3/4
M 27×2

14.2

7.8

18.5

8 x 4.6

18.77 x 1.78

Screw-In Drill

Type

G

K

d [max]

T [min]

U

X [max]

RVA 2-M

M 6

5H11

2

6

4.2

1.8

RVA 3-M

M 8×1

7H11

3.5

5.9

4.1

1.8

RVA 4
(RVA 4-M)

G 1/8
M 10×1

8.8H11 (9H11)

5

6.5

4.3

2.2

RVA 6
(RVA 6-M)

G 1/4
M 14×1.5

11.8H11 (12.5H11)

8

8

5.8

2.2

RVA 8
(RVA 8-M)

G 3/8
M 18×1.5

15.25H11 (16.5H11)

10

9.3

6.7

2.6

RVA 10
(RVA 10-M)

G 1/2
M 22×1.5

19H11 (20.5H11)

12

10.5

8

2.5

RVA 16
(RVA 16-M)

G 3/4
M 27×2

24.5H11 (25H11)

16

13

8.7

4.3

RVA Opening Pressure + Starting Torque

NG

2

3

4

6

8

10

16

Opening Pressure

bar

0.36

0.26

0.17

0.19

0.22

0.18

0.17

Starting Torque

Nm

6

8

12

20

25

40

80

Screw-In Check Valve

Order No.

Type

G

L

a

AF

o-ring

12 011 202

RVB 2-M

M 6

6.3

3.3

3

2.5 x 1

12 011 203

RVB 3-M

M 8×1

6.6

3.6

4

4 x 1

12 011 204

RVB 4
(RVB 4-M)

G 1/8
M 10×1

7.7

4.6

5

6 x 1

12 011 206

RVB 6
(RVB 6-M)

G 1/4
M 14×1.5

10

6.6

7

9 x 1

12 011 208

RVB 8
(RVB 8-M)

G 3/8
M 18×1.5

11.4

7.5

8

11 x 1.5

12 011 210

RVB 10
(RVB 10-M)

G 1/2
M 22×1.5

13.1

8

10

14 x 1.5

12 011 216

RVB 16
(RVB 16-M)

G 3/4
M 27×2

16.9

10.7

12

18.77 x 1.78

Screw-In Drill

Type

G

K

d [max]

T [min]

U

X [max]

RVA 2-M

M 6

5H11

2

6.7

4.2

2.2

RVA 3-M

M 8×1

7H11

3.5

6.5

4.4

2.1

RVA 4
(RVA 4-M)

G 1/8
M 10×1

8.8H11 (9H11)

5

7.5

5.3

2.2

RVA 6
(RVA 6-M)

G 1/4
M 14×1.5

11.8H11 (12.5H11)

8

10

7.6

2.4

RVA 8
(RVA 8-M)

G 3/8
M 18×1.5

15.25H11 (16.5H11)

10

10.9

8.6

2.3

RVA 10
(RVA 10-M)

G 1/2
M 22×1.5

19H11 (20.5H11)

12

12

9.1

2.9

RVA 16
(RVA 16-M)

G 3/4
M 27×2

24.5H11 (25H11)

16

15.5

11.5

4

RVB Opening Pressure and Starting Torque

NG

2

3

4

6

8

10

16

Opening Pressure

bar

0.77

0.47

0.22

0.22

0.2

0.23

0.2

Starting Torque

Nm

6

8

12

20

25

40

80

RVE Screw-In Socket with Elastic Sealing

Order No.

Type

G

L

t

O

AF

12 011 306

RVE 6

G 1/4

40

12

2.5

19

12 011 308

RVE 8

G 3/8

42

12

2.5

22

12 011 310

RVE 10

G 1/2

51

14

3

27

RVF Screw-In Socket with Elastic Sealing

Order No.

Type

G

L

t

O

AF

12 011 406

RVF 6

G 1/4

40

12

2.5

19

12 011 408

RVF 8

G 3/8

42

12

2.5

22

12 011 410

RVF 10

G 1/2

51

14

3

27

RVG Internal Thread on Both Sides

Order No.

Type

G

L

t

AF

12 011 506

RVG 6

G 1/4

45

12

19

12 011 508

RVG 8

G 3/8

48

12

22

12 011 510

RVG 10

G 1/2

58

14

27

RVA, RVE, RVG Flow Rate

CurveQ Max l/min
1=RVA23
2=RVA36
3=RVA4 – RVE4 – RVG410
4=RVA6 – RVE6 – RVG625
5=RVA8 – RVE8 – RVG845
6=RVA10 – RVE10 – RVG1070
7=RVA16 – RVE16 – RVG16100

RVB, RVF Flow Rate

CurveQ Max l/min
8=RVB22
9=RVB34
10=RVB4 – RVF48
11=RVB6 – RVF618
12=RVB8 – RVF830
13=RVB10 – RVF1060
14=RVB16 – RVF1690

Fitting Tools

Order No.Desc.for Typebzxdc maxAF
9 05855 00RMS 2RVA 23.34×124
9 05855 00RMS 3RVA 34.73×1.51.98
9 05855 00RMS 4RVA 463×1.52.410
9 05855 00RMS 6RVA 68.94×22.712
9 05855 00RMS 8RVA 810.84×33.817
9 05855 00RMS 10RVA 1014.54×34.519
9 05855 00RMS 16RVA 1618.64×45.227

Hytorc is a supplier and power unit accessory and valve manufacturer for various applications including construction, mechanical, marine, and industrial.

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Home / Products / Hydraulic Butterfly Valves / Butterfly Valves Specifications
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Butterfly Valves

The Hytorc butterfly valve is a component designed to save time for the technician working on the hydraulic system by not having to drain the reservoir. The valve is designed for low pressure hydraulic lines up to 230 psi and can be installed into the pump suction line or mounted directly on to the hydraulic reservoir for example. The maximum pressure differential on either side of the valve should not exceed 58 psi when the valve is closed.

Hydraulic Butterfly Valves Features:

  • Thin profile and SAE flange for easy design into hydraulic circuits
  • Ideal for space limited mobile applications
  • 28% more oil volume than ball valves 
  • Simple maintenance; no reservoir draining 
  • Equipped with a shifter for manual actuation
  • Easy installation for improved efficiency 
  • Designed for low-pressure suction lines only
  • Automatic locking mechanism
  • Optional limit switch
  • Aluminum body for reduced weight
  • Low cost for large pipes
  • NBR seals ensure optimal sealing performance
  • Options: reservoir flange, limit switch, and threaded adapter brushing inserts

Technical Data and Specifications

Over pressure

232 psi (16.0 bar)

Under pressure

10 psi (0.7 bar)

Diff pressure when shut valve is closed

58 psi (4.0 bar)

Temperature range

-4ºF to 176ºF (-20ºC to 80ºC)

Material
(Cage and Shifter)

Aluminum

Material
(Sealings)

Nitrile Rubber (NBR) (Perbunan)

Material
(Other Parts)

Galvanized Steel

Comparing Size: Butterfly Valve versus Ball Valve on 4″ Pipe

Butterfly versus Ball Valve

For a 4″ pipe, butterfly valves are nearly 77% shorter and 71% lighter than a ball valve of the same diameter.

Ultra-compact profile to minimize space requirement:

In applications where fitting ball valves into the design poses a challenge, butterfly valves provide an effective solution. These valves are significantly shorter and lighter than their counterparts, facilitating easier handling and installation. The advantages of this design become increasingly evident as the nominal diameter rises. This is particularly beneficial in mobile hydraulics where space is a premium. 

Convenient, simplified maintenance:

Thanks to internal clamping bolts, the valve is tightly secured to the reservoir even when even when disconnecting pipes or flexible connectors. This design enables maintenance without draining the reservoir. 

Easy installation:

Shut off valves can be fitted between flanges due to the lateral recesses. Alternatively, heavy suction pipes can be held with additional screws.

No loss of oil volume:

The valve’s inner diameter is larger than the pipe, enabling full flow capacity without compromising on oil volume. This feature is crucial for maintaining efficient and precise control.

Automatic locking mechanism:

The self-engaging lock bar provides a secure and stable connection. The lock bar automatically engages in all switch positions; fully open, closed, or at an intermediate position, and ensures arresting of the valve’s position even without a shift lever.

Limit switch for preventative measures:

Prevent damage to your pump by making sure the valve is open prior to turning on the pump.

Ordering Code

AB 16 S [NG] – T H B E

The example for a shut off valve with a nominal width of 80mm, tank welded flange, shifter and limit switch is: AB 16 S 80 – THE

HYTORC product designation for basic equipment, see catalog page 4.

Nominal diameter of the butterfly valve

Additional description

T

Tank welded flange

H

Shifter

B

Tapped bushings

E

Limit switch

Hytorc is a supplier and power unit accessory and valve manufacturer for various applications including construction, mechanical, marine, and industrial.

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Home / Products / Hydraulic Compensators / Compensator Specifications
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Hydraulic Rubber Compensators

The HYTORC Rubber Compensator is a product that qualifies as one of the best kept secrets of power unit accessories. The compensators are flexible connectors with SAE or DIN flanges that correct pipe alignment problems. They also provide a benefit with damping of vibrations, noises and movements in axial and transverse direction.

The HYTORC Compensator is constructed of an inner liner of a reinforced high strength nitrile rubber (Perbunan). The outer and inside layers are smooth and have an aerodynamic design that eliminates cavitation. Both ends have a vulcanized sealing surface, eliminating the need of additional seals. The maximum operating pressure is 116 psi (6 bar) from -4 °F to +176 °F (-20ºC to 80ºC).

Technical & Material Data

Max. operating pressure

87 psi (6 bar)

Max. peak pressure

116 psi (8 bar)

Bursting pressure

174 psi (12 bar)

Under pressure

10.2 psi (0.7 bar)

Temperature range

-4ºF to 176ºF (-20ºC to 80ºC)

Material
(Flange)

Aluminum Alloy; Galvanized Steel; Malleable Cast Iron, Galvanized

Material
(Rubber Part)

Nitrile Rubber (NBR) (Perbunan)

Range of applications

All types of mineral oil products, crude oil, lubricants, coolants, grease, cold water, warm water up to 140ºF (60ºC), water-oil-emulsion, fuels with up to 30% aromatics content

Ordering Code

K 16 S D – 80

The above example shows a compensator of a nominal width of 80mm with 1 SAE flange and 1 DIN flange.

HYTORC product designation

Form of execution, flange 1

S

Aluminum Alloy

ST

Galvanized Steel (SAE Flange)

D

Galvanized Steel (DIN Flange)

R

Malleable Cast Iron, Galvanized

Form of execution, flange 2

S

Aluminum Alloy

ST

Galvanized Steel (SAE Flange)

D

Galvanized Steel (DIN Flange)

R

Malleable Cast Iron, Galvanized

Nominal size


Hytorc is a supplier and power unit accessory and valve manufacturer for various applications including construction, mechanical, marine, and industrial.

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    Heat Exchangers — Closed Loop Cooler

    The Universal Hydraulik TFS/A  series is a compact partial-flow cooling unit. It was developed to improve the availability and reliability of hydraulic systems. Due to its combination of a motor pump unit and an oil-air cooler in one device, the TFS/A is an autonomous unit, which can be operated independently of the main system. In this manner continuous cooling is ensured.

    Product Features

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    • Equipped with multi range motors as standard equipment
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    Options:

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    • Filter mat
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    Heat Exchangers — Mobile Air

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    • Compact oil-cooler
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    • Low pressure loss
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    • High flexibility
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    • Also for use with water/glycol
    • Variable motor: 12/24/400V
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    Options:

    • Testing pressure 580 psi (40 bar)
    • Filter pad available on request
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    Heat Exchangers — Oil-Air Cooler

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    Product Features

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    • Compact oil-cooler
    • High cooling performance
    • Low pressure loss
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    • Variable motor; Hydro / 12/24V

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    • Testing pressure 580 psi (40 bar)
    • Filter pad available on request
    • Thermo-bypass
    • Thermal-switch
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    • Stainless steel

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    Heat Exchangers — Screwed Plate Cooler

    Universal Hydraulik TL plate heat exchangers consist of a number of corrugated plates. The plate pack is mounted between a fixed and a movable pressure plate, positioned by an upper and a lower carrying bar, and compressed by several tightening bolts. Gasketed type plates and welded modules with various patterns are available for a wide range of applications. The media can pass the heat exchanger either in cocurrent or counter-current flow. Depending on the operating conditions media and temperature-resistent gaskets of the glued on or clipped on version are used. The welded plate module forms are hermetically sealed flow channel to the outside. The transition from one module to another is sealed by a ring gasket made of a special material.

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