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16-150# Full-bore, soft‑and‑hard double‑seal swing check valve for long-distance pipelines
18-150# Full-bore, soft‑and‑hard dual‑seal swing check valve for long-distance pipelines
24-150# Full-bore, soft‑and‑hard double‑seal swing check valve for long-distance pipelines
20–300# Full-bore, Soft‑and‑Hard Dual‑Seal Swing Check Valve for Long‑Distance Pipelines
3-600# Full-bore, soft‑and‑hard double‑seal swing check valve for long-distance pipelines
8-600# Full-bore, soft‑and‑hard dual‑seal swing check valve for long-distance pipelines
10–600# Full-bore, soft‑and‑hard double‑seal swing check valve for long-distance pipelines
12-600# Full-bore, soft‑and‑hard dual‑seal swing check valve for long-distance pipelines
3-900# Full-bore, soft‑and‑hard double‑seal swing check valve for long-distance pipelines
10–1500# Full-bore, soft‑and‑hard double‑seal swing check valve for long-distance pipelines