產品結構特點 Construction features
1、產品按國家標準GB/T 12236設計制造,結構合理,密封可靠,性能優良。
2、閥瓣和閥座的密封面用鐵基合金或司太立(stellite)鈷基硬質合金堆焊而成,耐磨、耐高溫、耐腐蝕,抗擦傷性能好,使用壽命長。
3、可采用各種配管法蘭標準及法密封面型式,滿足各種工程需要及用戶要求。
4、閥體材料品種齊全,墊片可根據實際工況或用戶要求合理選配,能適用于各種壓力、溫度及介質工況。
5、閥瓣圍繞閥座外的銷軸旋轉,減少關閉時發生猛烈沖擊。
6、銷軸與閥瓣連接采用內裝式結構,不存在外泄漏點,使用更可靠。
1. The products are manufactured according to national standard GB/T 12236, with reasonable structure, reliable sealing and excellent performance.
2. The sealing surface of disc and seat is made of iron base alloy or stellite (stellite) cobalt base hard alloy. It is wear-resistant, high temperature resistant, corrosion resistant, good abrasion resistance and long service life.
3. All kinds of piping flange standard and sealing cover type can be used to meet various engineering needs and user requirements.
4. The valve body material is complete, the gasket can be selected according to the actual working conditions or users, and can be applied to various pressure, temperature and medium conditions.
5. The disc revolves around the pin shaft outside the seat and reduces the impact when it is closed.
6. The pin shaft and disc connection are built in an internal structure, and there is no leakage leakage point, and the use is more reliable.
產品特征 Spericfications
適用介質:水、氣、油品、天然氣和酸堿腐蝕性介質
適用溫度:-196~540℃
驅動方式:手動、氣動、電動等
公稱壓力:20.0~32.0MPa
公稱通徑:DN15~250mm
Applicable media: water, gas, oil, gas and acid and alkali corrosive medium
Applicable temperature: -196~540℃
Driver: manual, pneumatic, electric, etc
Nominal pressure: 20.0~32.0MPa
Nominal size: DN15~250mm
技術規范 Technical specification
設計依據 Design reference | GB系列 GB series |
設計標準 Design standard | GB/T12235 |
結構長度 Face to face | GB/T12221 |
連接法蘭 End flange | GB/T12224 |
試驗和檢驗 Test & inspection | GB/T 26480 |
試驗壓力 Test prssure
壓力等級 Pressure grade | 試驗壓力 Test pressure |
公稱壓力 PN Nominal pressure | 殼體試驗 Sheil test | 正密封試驗 Sealing test | 反密封試驗 Sealing test | 氣密封試驗 Air seal test |
20.0 P54 10V | 30.0 | 22.0 | - | 0.6 |
25.0 P54 14V | 37.5 | 27.5 | - | 0.6 |
32.0 P54 17V | 48.0 | 36.0 | - | 0.6 |
止回閥結構長度和外接尺寸 Main connection dimensions
PN:1.6~4.0 |
公稱通徑 DN | L (mm) | H (mm) |
15 | 120 | 156 |
20 | 170 | 200 |
25 | 170 | 210 |
32 | 200 | 245 |
40 | 230 | 270 |
50 | 350 | 300 |
65 | 326 | 412 |
80 | 470 | 370 |
100 | 560 | 420 |