KINGNA TRADING

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Ball Check Valve (HQ41X)

Industrial valves and fittings dispatch fast — wear parts and complete machines quoted on request.

Check Valves

Swing, ball, silent and flapper check valves to stop reverse flow and water hammer.

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The ball check has no hinge and no disc: a rubber-covered ball rolls off its seat with forward flow and is pushed back by any reversal, so there is nothing to stick, seize or hang up on rags — which is why it is the usual choice on sewage and slurry-adjacent duty where a swing check would foul within months. Two limits. The ball needs a few tenths of a bar of back pressure to seat, so it is not a tight shut-off; and on vertical downward flow a plain ball will not close against gravity, which needs a spring-loaded build rather than the standard body.

General Specifications

Size RangeDN50 – DN400
ModelHQ41X
Pressure RatingPN10 / PN16 (PN25 on request)
End ConnectionDouble flanged
Flange DrillingBS EN 1092-2 (DIN 2501)
InstallationHorizontal or vertical
ServiceWater / wastewater, pump discharge
Max. Working Temperature70 °C standard (EPDM) — NBR for 80 °C, FKM for up to 150 °C on request

Materials & Coating

BodyDuctile iron, electrostatic epoxy coated; duplex 2205 / 2507 available on request
Ball304 stainless steel core, EPDM vulcanised
SeatEPDM (metal-to-metal option on request)
TrimStainless steel (grade per order)

Design Features

Why choose itFree-seating ball resists sticking in sewage duty

Applications

Wastewater systems Water supply Pump discharge Industrial lines

More from this series

Ball Check Valve (HQ41X) — Side view of blue flanged valve body with top bolted bonnet

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