上海祝茂阀门生产以下几种压力和材质：

不锈钢氧气止回阀HY41W-16、不锈钢氧气止回阀HY41W-16Q、不锈钢氧气止回阀HY41W-16C、不锈钢氧气止回阀HY41W-16P、不锈钢氧气止回阀HY41W-16R

不锈钢氧气止回阀HY41W-25、不锈钢氧气止回阀HY41W-25Q、不锈钢氧气止回阀HY41W-25C、不锈钢氧气止回阀HY41W-25P、不锈钢氧气止回阀HY41W-25R

不锈钢氧气止回阀HY41W-40、不锈钢氧气止回阀HY41W-40Q、不锈钢氧气止回阀HY41W-40C、不锈钢氧气止回阀HY41W-40P、不锈钢氧气止回阀HY41W-40R

其压力有以下口径：HY41W-40P/R DN15止回阀、HY41W-40P/R DN20止回阀、HY41W-40P/R DN25止回阀、HY41W-40P/RDN32止回阀、HY41W-40P/R DN40止回阀、HY41W-40P/R DN50止回阀、HY41W-40P/R DN65止回阀、HY41W-40P/RDN80止回阀、HY41W-40P/R DN100止回阀、HY41W-40P/R DN125止回阀、HY41W-40P/R DN150止回阀、HY41W-40P/R DN200止回阀、HY41W-40P/R DN250止回阀、HY41W-40P/R DN300止回阀、HY41W-40P/R DN350止回阀、HY41W-40P/R DN400止回阀、HY41W-40P/R DN450止回阀、HY41W-40P/R DN500止回阀、HY41W-40P/R DN600止回阀、HY41W-40P/R DN700止回阀、HY41W-40P/R DN800止回阀；

其压力有以下口径：HY41W-25P/R DN15止回阀、HY41W-25P/R DN20止回阀、HY41W-25P/R DN25止回阀、HY41W-25P/RDN32止回阀、HY41W-25P/R DN40止回阀、HY41W-25P/R DN50止回阀、HY41W-25P/R DN65止回阀、HY41W-25P/RDN80止回阀、HY41W-25P/R DN100止回阀、HY41W-25P/R DN125止回阀、HY41W-25P/R DN150止回阀、HY41W-25P/R DN200止回阀、HY41W-25P/R DN250止回阀、HY41W-25P/R DN300止回阀、HY41W-25P/R DN350止回阀、HY41W-25P/R DN400止回阀、HY41W-25P/R DN450止回阀、HY41W-25P/R DN500止回阀、HY41W-25P/R DN600止回阀、HY41W-25P/R DN700止回阀、HY41W-25P/R DN800止回阀；

其压力有以下口径：HY41W-16P/R DN15止回阀、HY41W-16P/R DN20止回阀、HY41W-16P/R DN25止回阀、HY41W-16P/RDN32止回阀、HY41W-16P/R DN40止回阀、HY41W-16P/R DN50止回阀、HY41W-16P/R DN65止回阀、HY41W-16P/RDN80止回阀、HY41W-16P/R DN100止回阀、HY41W-16P/R DN125止回阀、HY41W-16P/R DN150止回阀、HY41W-16P/R DN200止回阀、HY41W-16P/R DN250止回阀、HY41W-16P/R DN300止回阀、HY41W-16P/R DN350止回阀、HY41W-16P/R DN400止回阀、HY41W-16P/R DN450止回阀、HY41W-16P/R DN500止回阀、HY41W-16P/R DN600止回阀、HY41W-16P/R DN700止回阀、HY41W-16P/R DN800止回阀；

HY41W-16P氧气专用止回阀

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