Marchesini VAU anti-shock valve (dual cross relief)

Name: Marchesini VAU anti-shock valve (dual cross relief)
Brand: Oleodinamica Marchesini
Availability: InStock

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Marchesini anti-shock valve with two cross-relief valves, to protect both sides of a motor or cylinder.

Relief valves: 1" - V0470

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Product available with different options

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Ref. 1.MA01.V0470

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Delivery in 1 to 5 working days in mainland Portugal (items in stock); Spain 3 working days, rest of the EU 5 working days. Times are estimates.

Shipping from €6.15 in Portugal, €7.38 in Spain and €24.60 in the rest of the EU; free from €100 + VAT in mainland Portugal, €150 + VAT in Spain and €400 + VAT in the rest of the EU. You can also collect from our shop in Leiria.

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The VAU combines two cross-relief pressure valves in one body. It fits between the directional valve and the hydraulic motor (or cylinder) and limits the pressure in each line, each with its own setting. In practice it is an anti-shock valve: it cuts the peaks that appear when the movement is braked or reversed suddenly.

V1 and V2 connect to the supply and the other two ports, also V1 and V2, to the actuator. Marchesini recommends fitting it as close as possible to the motor or cylinder, to reduce pressure losses and get a faster response.

VAU 1/4" (V0438): G 1/4" ports, up to 30 l/min, springs for 10-50, 20-100, 10-180 (standard), 50-250 and 80-300 bar
VAU 1" (V0470): G 1" ports, differential version, up to 160 l/min, springs for 20-200 and 50-400 bar (standard)
Zinc-plated steel body; internal parts in hardened and ground steel; NBR seals

The number after the slash is the spring (V0438/180: 10-180 bar; V0470/400: 50-400 bar).

Source: Oleodinamica Marchesini technical catalogue, section 5 Valvole antiurto, 2008.