技术标准：
1、制造验收技术条件按日本火力发电用阀标准的E101的规定。
2、阀门结构长度按E101的规定。
3、阀体焊接坡口按ANSl B16 25的规定或按用户提供的尺寸。
Mahufacture and Acceptanle stanelard
1、The manufaceture and acceptance specification shall be based on the japanese stand ard E101 applied for th thermal power plant
2、The 1ength shall be in line with E101
3、Valve body weldi ng grouve shall be in all ordance wieh ANSlBl6．25 orwieh aser’s specificate
技术参数：
壳体材料 Shellmaterial | 适用温度/℃ Applicable temperature | 适用介质 Applicable medium |
ASTM A216 WCB | ≤425 | 蒸汽、水
Steam，Water |
ASTM A217 WC1 | ≤450 |
ASTM A217 WC6 | ≤550 |
ASTM A217 WC9 | ≤590 |
主要零件材质：
壳体材料 Shell material | 材料牌号Mater…Designation |
阀体
Body | WOB | WC1 | WC6 | WC9 |
闸板
Disc | WCB | WC1 | WC6 | WC9 |
阀盖
Bonnet | 25 | 15CrMoVA | 12CrMoVA | 12CrMoVA |
WCB | WCl | WC6 | WC9 |
阀杆
Stem | 38CrMoVA
1Cr17Ni2 | 38CrMoVA
10r17Ni2 | 38CrMoVA | 38CrMoVA |
20CrlMolV1A | 20Cr1MoVA |
填料
Packing | 增强柔性石墨 Flexible Graphite |
支架
Yoke | WCB | WCB | WCB | WCB |
WC1 | WC6 | WC9 |
密封环
Sealing ring | S软钢(增强柔性石墨)
S Soft steel(flexible graphite) | S软钢
S Soft steel | F软钢
F Soft steel |
阀杆螺母
Stem nut | ZQA19-4或A439 D2 |
