welded bonnet Integral seal down low leakage test stem packing by automatically adjust the preload gland packing

welded bonnet Integral seal down low leakage test stem packing by automatically adjust the preload gland packing

piece forging flange Outside screw & Yoke(OS&Y) Integral seal down to remove seat low leakage test stem packing by

pressure self-sealing valve cover, also under pressure to ensure good sealing performance Outside screw & Yoke(OS&Y) Integral seal down

bolted bonnet Integral seal down to remove seat low-leakage test requirements to meet the stem packing automatically adjust the preload gland packing

bellows sealed to prevent leakage Outside screw & Yoke(OS&Y) Integral seal down to remove seat low leakage test stem packing by automatically adjust the preload gland packing

forged power plant gate valve

piece forging flange Outside screw & Yoke(OS&Y) Integral seal down to remove seat low leakage test stem packing by automatically adjust the preload gland packing