3、合金钢
一般选用40Cr、38CrMoA1A、20CrMo1V1A等材料。40Cr经过镀铬处理后，适用于公称压力小于等于32MPa、温度小于等于450度的水、蒸汽、石油等介质。38CrMoA1A经过氮化处理，能在工作温度540度的条件下承受10MPa的压力，常用于电站阀门上。20CrMo1V1A经过氮化处理能在工作温度570度的条件下承受14MPa的压力，常用于电站阀门上。
台湾CHIAWANG叠加阀(叠加式溢流阀)
MRV-03-P1-20 MRV-02-P1-20 MRV-03-P3-20 MRV-02-P3-20
MRV-03-A1-20 MRV-02-A1-20 MRV-03-A3-20 MRV-02-A3-20
MRV-03-B1-20 MRV-02-B1-20 MRV-03-B3-20 MRV-02-B3-20
MRV-03-W1-20 MRV-02-W1-20 MRV-03-D3-20 MRV-02-D3-20
MRV-02-P2-20 MRV-02-P4-20 MRV-02-A2-20 MRV-02-A4-20
台湾CHIAWANG电磁溢流阀
SRV-03G-3-D2-30-50 SRV-06G-3-D2-30-50 SRV-10G-3-D2-30-50
SRV-03G-2-D2-30-50 SRV-06G-2-D2-30-50 SRV-10G-2-D2-30-50
SRV-03G-1-D2-30-50 SRV-06G-1-D2-30-50 SRV-10G-1-D2-30-50
SRV-03G-3-A2-20-50 SRV-06G-3-A2-20-50 SRV-10G-3-A2-20-50
SRV-03G-2-A2-20-50 SRV-06G-2-A2-20-50 SRV-10G-2-A2-20-50
SRV-03G-1-A2-20-50 SRV-06G-1-A2-20-50 SRV-10G-1-A2-20-50
SRV-03G-3-A1-30-50 SRV-06G-3-A1-20-50 SRV-10G-3-A1-20-50
SRV-03G-2-A1-30-50 SRV-06G-2-A1-20-50 SRV-10G-2-A1-20-50
SRV-03G-1-A1-30-50 SRV-06G-1-A1-20-50 SRV-10G-1-A1-20-50
DBW-06G-3-D2-30 DBW-06G-2-D2-30 DBW-06G-1-D2-30
DBW-03G-3-D2-30 DBW-03G-2-D2-30 DBW-03G-1-D2-30
DBW-10G-3-D2-30 DBW-10G-2-D2-30 DBW-10G-1-D2-30