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706-77-76701 صمام تنفيس المحرك الدوار صمام تنفيس الضغط صمام الأمان pc300-5 pc400-5 حفارة
وصف الفيديو
Stay tuned as we highlight the most important features and real-use results of the GVO 702-77-02120 rotary motor relief valve for PC1250-7, PC1250-8, PC300, and PC400 excavators. In this video, we demonstrate how this main pressure safety valve regulates hydraulic pressure, protects the main valve and pump, and supports stable digging force and compound actions. You'll see its precision-machined steel body, quenched valve core and seat, and high-pressure seal kit, plus a close look at packaging and shipping. Ideal for B2B buyers seeking clear, practical insights into hydraulic relief valve performance and reliability.
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