一、H41H锻钢法兰止回阀 产品概述 H41H锻钢法兰止回阀是指依靠介质本身流动而自动开、闭阀瓣，用来防止介质倒流的阀门 二、H41H锻钢法兰止回阀 结构形式如下 1.全通径或缩径；
2.立升式止回阀
3.球形止回阀
4.旋启式止回阀
5.可按要求采用弹簧辅助复位
6.采用缠绕式垫片的螺栓型阀盖、螺纹密封焊接型阀盖，或自密封阀盖
7.承插焊接ANSI/ASME B16.11
8.螺纹端(NPT端)按ANSI/ASME B1.20.1 三、H41H锻钢法兰止回阀 主要零部件材料 序号NO. | 名称 | 美标碳钢CS to ASTM | 美标合金钢AS to ASTM | 美标不锈钢钢SS to ASTM | Part Name | Type A 105 | Type F22 | Type F304(L) | Type F316(L) | 1 | 阀体 | Body | A105 | A182 F22 | A182 F304(L) | A182 F316(L) | 2 | 立升式阀瓣 | PistonDisc | A276 410 | A276 304 | A276 F304(L) | A276 F316(L) | 3 | 垫片 | Gasket | Corrugated SS graphite | SS PTFE | 4 | 阀盖 | Bonnet | A105 | A182F22 | A182 F304(L) | A182 F316(L) | 5 | 铭牌 | Nameplate | | 6 | 螺栓 | Bolt | A193 B7 | A193 B16 | A193 B8M | A193 B8M | 7 | 球 | Ball | A182 F304 | A182 F304 | A182 F304 | A182 F304 | 适用介质 Suitable Medium | (水、油、气等)W.O.G.etc | (酸类)HNO3,CH3OOH etc | 适用温度Suitable Temperature | -29℃～425℃ | -29℃～550℃ | -29℃～180℃ |
注：可按要求采用其他材料 Note:Other materials are available upon request.
CS=碳钢AS=合金钢SS=不锈钢CS=Carbon Steel;AS=Alloy Steel;SS=Stainless Steel 四、H41H锻钢法兰止回阀 尺寸表 通径 | 缩径RB | 3/8 | 1/2 | 3/4 | 1 | 11/4 | 11/2 | 2 | | NPS | 全径FB | | 3/8 | 1/2 | 3/4 | 1 | 11/4 | 11/2 | 2 | L | 150～800Lb | 79 | 79 | 92 | 111 | 120 | 152 | 172 | 200 | 900～1500Lb | 111 | 111 | 111 | 130 | 152 | 172 | 220 | 220 | H(OPEN) | 150～800Lb | 61 | 61 | 65 | 79 | 95 | 103 | 118 | 132 | 900～1500Lb | 65 | 79 | 79 | 97 | 104 | 120 | 139 | 215 | Weights | Bolted | 150～800Lb | 1.4 | 1.2 | 1.5 | 3.1 | 3.9 | 5.6 | 8.9 | 12.5 | 900～1500Lb | 1.6 | 3.4 | 3.3 | 5.5 | 6.0 | 9.2 | 12.9 | 16.2 | Welded | 150～800Lb | 1.1 | 1.0 | 1.2 | 2.9 | 3.3 | 4.9 | 8.1 | 10.9 | 900～1500Lb | 1.3 | 3.2 | 3.1 | 4.8 | 5.4 | 8.5 | 11.2 | 14.3 |
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