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Manifold Mounted Sequence Valve

This type of manifold mounted sequence valve is used to automatically sequence positioning, clamping, and supporting functions as system pressure increases. The manifold mounted sequence valve prevents fluid flow to a portion of the fixture until a predetermined trigger pressure is achieved (easily adjustable). It can also be used in multiples for multi-stage sequencing.

The version of this manifold mounted sequence valve is used for manifold mounting without exposed fluid lines. It is available in an in-line-mounted version with standard fittings, and a series-mounted version that is ideal for multi-stage sequencing.

The manifold mounted sequence valve is designed to set up initially, and turn the adjustment screw on top until the desired trigger pressure is achieved. During normal operation, the manifold mounted sequence valve opens automatically when system pressure reaches the set trigger pressure. After the valve opens, system pressure rises uniformly on both upstream and downstream sides (no pressure drop upstream when the valve opens).

Fluid enters and exits through two o-ring ports fed by drilled fixture passages. For manifold mounting, the mounting surface must be ground flat to ensure proper o-ring sealing (32 RMS maximum), fasten with three cap screws. It can be mounted in any position, horizontal or vertical.

When using the manifold mounted sequence valve, choose normal-range model instead of low range whenever possible. Normal-range version provides a wider adjustment range, especially important when used with an air power unit, which has a 2200-psi minimum operating pressure. For multi-stage sequencing, set trigger pressures in steps of at least 750 psi (normal range) or 375 psi (low range).

(Edited by Eloise Tsai)

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