bonnetless的中文,翻译,解释,例句
bonnetless
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Velan one-piece, forged, bonnetless globe valves have been proven in critical, tough service applications around the world for over 30 years.
30多年来，Velan一体式、锻造、无阀帽截止阀在全世界关键的、严酷的应用领域内经受住了考验。
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Velan bellows are designed for 10,000 cycles for 1/2–2"(15–50 mm) globe valves, 5000 cycles for bonnetless globe valves and 3000 cycles for 1/2–2"(15–50 mm) gate valves.
Velan波纹管设计寿命为DN15-DN50截止阀10，000次，无盖截止阀5000次，DN15-DN50闸阀3000次。