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Non-return valves C-RV DN16-DN100 PN500

  • Operating pressure: 500bar
  • Nominal size(s): DN16, 25, 65, 80, 100

Features

  • Non-return valve controlling liquid media
  • The valve is designed in two diff erent control ratios, see Valve data
  • Opening pressure of the preload spring is „1bar“, other opening pressures on request
  • Valve piston and valve seat are coupled and close hydraulically „leak-free“.
  • Valve fastening structural plate form with a Hauhinco connection diagram
  • Valve parts made of corrosion-resistant stainless steel

Function of Non-return valve

The valve piston (2) guided within the valve body (1) is pressed into the valve seat (3) by the force of the spring (4). The control chamber (5) is connected to the B-channel via the control channels (6) within the valve piston (2). The hydraulic pressure supplied at the B-channel with the valve closed is thus also acting on the control surface (A2). This pressure keeps the valve closed and shuts off the direction of fl ow from the B- to the A-channel. Conversely, the non-return valve opens when the hydraulic pressure at the A-channel exceeds the hydraulic pressure at the B-channel and the spring force (4). In order to reach the initial opening of the closed valve, the hydraulic pressure within the A-channel must be greater by the factor of the control ratio A2/A1. The response behaviour of the valve is dampened by the throttling pin.

Control surfaces, hydraulic forces
A channel: Area A1, open valve
B channel: Area A2, close valve
Control surface (5) = A2 > A1

 

Technical data

measured with HFA medium 97/3%, at 20°C

General

Weightsee Order information
Installation positionany
Ambient temperature-10 to 50°C (hydraulic fluids, heed standard requirements)
Material Valve parts
Material Seals		Stainless steel
NBR, PTFE, PUR

Hydraulic

Hydraulic pressure connector A, B≤ 500 bar, höhere Druckstufen auf Anfrage
Direction of flowA->B
Control ratioA1≤A2, A1, A2 - Control surfaces
Pressure fluid
- Medium - Temperature range
- Medium - Quality
- min. filter fineness connection		Water, HFA
5 to 40°C
see Hauhinco media requirement, water, HFA
Filter fineness 100μm
Pressure fluid
- Medium - Temperature range
- Medium - Quality
- Viscosity		Mineral oil HLP according to DIN51624-2
5 to 50°C
Cleanliness class -/19/16 according to ISO 4406
0,6 bis 100 mm²/s

Ranges of application

Control ratio A2/A1 ≥ 1,2Standard applications, e.g. backstop. Special valve features are a delayed response due to the area ratio, an increased resistance to wear due to the large sealing surface.
Control ratio A2/A1 ≤ 1,1Special applications, e.g. for a quick response with a low pressure difference between A- and B-channel, such as a pressure relief function, pre-loading valve.

Included in the scope of supply

Mounting screws for the valves

Versions

DescriptionNominal sizeWeightMax. pressureBasic positionVoltageNoteArticle number
Non-return valve C-RV DN16DN165,0kg500--Control ratio [A2/A1]: 1,206260144
Non-return valve C-RV DN25DN2510,5kg500--Control ratio [A2/A1]: 1,256271847
Non-return valve C-RV DN25DN258,5kg500--Control ratio [A2/A1]: 1,106259421
Non-return valve C-RV DN40DN4021,0kg500--Control ratio [A2/A1]: 1,106154182
Non-return valve C-RV DN65DN65112,0kg500--Control ratio [A2/A1]: 1,206600030
Non-return valve C-RV DN80DN80179,0kg500--Control ratio [A2/A1]: 1,356260152
Non-return valve C-RV DN100DN100448,0kg500--Control ratio [A2/A1]: 1,306169171
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Hauhinco Maschinenfabrik GmbH & Co. KG
Hölterstraße 51
45549 Sprockhövel
Germany

Phone.: +49 2324 705-0
Fax: +49 2324 705-222 
sales@hauhinco.de

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With our decades of know-how in water hydraulics, we at Hauhinco have core competences in the mining sector and in a number of industrial applications.

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