
FDY Pilot-Operated Check Valves
FDY (FDY125/50) hydraulic check-valve reference in the official catalog.
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Shanxi Henghui Hydraulic High-Tech Co., Ltd.

GZC (FHS125/31.5) reference in Henghui’s directional-valve catalog.
Henghui’s official catalog lists a single-section directional valve under the GZC reference, with FHS125/31.5 shown alongside it. Use the complete reference when enquiring about the circuit function. Confirm spool arrangement, ports, actuation and selected operating data with the supplier rather than decode all model characters as independently verified technical specifications.
Shanxi Henghui Hydraulic High-Tech Co., Ltd. · Yangquan, Shanxi
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Source reviewed: 2026-11-09. This directory summary organises the supplier’s published product information.
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FDY (FDY125/50) hydraulic check-valve reference in the official catalog.
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