HH44X微阻緩閉止回閥產品概況
HH44X微阻緩閉消聲止回閥產品簡介:
HH44X微阻緩閉消聲止回閥可用在清水、污水、海水等介質的排水水泵出口管道上，既能用于防止停泵時有壓水流對水泵的沖擊，又能防止介質的倒流，保證管線的使用安全。它具有結構新穎、體積小、重量輕、流體阻力小、密封可靠、啟閉平穩、使用壽命長、關閉無噪聲等特點。
Product Brief Introduction:
The valve is installed at the outlet of pump and suited to prevent media from flowing backwards and eliminate effectively damageable water hammer in pipelines flowing media of fresh water , polluted water , sea water. It has character as followings: modern structure ,small volume ,light weight ,low resistance ,reliable seal ,stable operation , long duration ,small volume.
HH44X微阻緩閉消聲止回閥主要性能參數：Main Performance Parameters:
| 公稱壓力Nominal Pressure( bar) | 10 | 16 | |
| 適用溫度 Suitable Temp ( oC ) | ≤85 | ||
| 試驗壓力（MPa） TestingPressure | 殼 體Shell | 1.5 | 2.4 |
| 密 封Seal | 1.1 | 1.76 | |
| 適用介質 Suitable Media | 水、污水、海水等 Water, polluted water , sea water | ||
| 設計標準Design Standard | GB/T 12232-2005 | ||
| 試驗檢驗標準 Test and check up standard | GB/T 13927-1992 | ||
| 結構長度標準Face to face dimensions | GB/T 12221 | ||
| 法蘭連接標準Flange Standard | GB/T 17241.6-98 | ||
HH44X微阻緩閉消聲止回閥主要零部件材質：Materials of Main Parts:
| 名 稱 Name | 材 料 Material |
閥 體 Body | 灰鑄鐵，鑄鋼 Cast Iron，Carbon Steel |
閥瓣Valve petal | 不銹鋼Stainless Steel |
閥桿、活塞Stem、Piston | 不銹鋼Stainless Steel |
彈 簧Spring | 不銹鋼Stainless Steel |
閥 座Seat | 不銹鋼Stainless Steel |
HH44X微阻緩閉消聲止回閥主要外形尺寸及連接尺寸：Outline Dimensions & Connection Dimensions:
| DN(mm) | D | D1 | D2 | n-Φd | L | H |
| 50 | 165 | 125 | 100 | 4-Φ18 | 230 | 260 |
| 65 | 185 | 145 | 120 | 4-Φ18 | 290 | 320 |
| 80 | 200 | 160 | 135 | 8-Φ18 | 310 | 254 |
| 100 | 220 | 180 | 155 | 8-Φ18 | 350 | 288 |
| 125 | 250 | 210 | 185 | 8-Φ18 | 400 | 325 |
| 150 | 285 | 240 | 210 | 8-Φ23 | 480 | 400 |
| 200 | 340 | 295 | 265 | 12-Φ23 | 500 | 460 |
| 250 | 395/405 | 350/355 | 320 | 12-Φ23/12-Φ28 | 600 | 510 |
| 300 | 445/460 | 400/410 | 375/370 | 12-Φ23/12-Φ28 | 700 | 590 |
| 350 | 505/520 | 460/470 | 435/429 | 16-Φ23/16-Φ28 | 800 | 650 |
| 400 | 565/580 | 515/525 | 482/480 | 16-Φ28/16-Φ31 | 900 | .750 |
| 500 | 670/715 | 620/650 | 608/608 | 20-Φ28/20-Φ34 | 1100 | 860 |
| 600 | 780/840 | 725/770 | 718/720 | 20-Φ31/20-Φ37 | 1300 | 1030 |
| 700 | 895/910 | 840/840 | 788/794 | 24-Φ30/24-Φ37 | 1400 | 1270 |
| 800 | 1015/1025 | 950/950 | 898/901 | 24-Φ33/34-Φ41 | 1500 | 1510 |
