The micro resistance slow closing butterfly check valve series products are used in drainage pipelines for clean water, seawater, sewage and other media, which can prevent media back flow and effectively limit destructive water hammer, ensuring pipeline safety. Material of micro resistance slow closing butterfly check valve: carbon steel, low-temperature steel, duplex steel (F51/F53), titanium alloy, aluminum bronze, Inconel (INCONEL625), SS304, SS304L, SS316, SS316L; Chromium molybdenum steel, Monel (400/500), 20 # alloy, Hastelloy and other metal materials.
Product features:
- Small in size, lightweight, and with a structural length only about one-third of that of a swing check valve. 2. The slow closing system has good performance and is not affected by the medium in the pipeline. The valve disc closes quickly first and then slowly, which can prevent destructive water hammer. 3. Rubber soft seal, good sealing performance, wear-resistant, and long service life. 4. Rubber cushioning, smooth opening and closing, no vibration, no noise. 5. Compared to old-fashioned check valves, it has a smaller flow resistance and significant energy-saving effect.
Technical parameter£º
Model |
HH46XHH48XHH49X |
Nominal pressure |
1.0~2.5MPa |
Nominal diameter |
DN40~DN1000 |
Applicable medium |
Water, clean water, seawater, sewage |
Parts material£º
Parts name |
Valve body |
Disc |
Seal ring |
Valve stem |
Filler |
Material |
Gray cast iron,carbon steel |
Gray cast iron, carbon steel, ductile iron |
Neoprene rubber, nitrile oil resistant rubber |
Stainless steel |
PTFE |
Performance parameter£º
Model |
Nominal pressure PN(MPa) |
Strength test pressure (MPa) |
Sealing pressure (MPa) |
Applicable temperature (¡æ) |
Applicable medium |
Slow closing time |
HH46X HH48X HH49X |
1.0 |
1.5 |
1.1 |
¡Ü80 |
Clear water, sewage, seawater |
¡Ü60 Second |
1.6 |
2.4 |
1.76 |
2.5 |
3.75 |
2.75 |
Nominal pressure |
Nominal diameter |
Size£¨mm) |
L |
H |
H1 |
1.0 1.6 2.5 |
40 |
140 |
200 |
88 |
50 |
150 |
215 |
98 |
65 |
170 |
225 |
108 |
80 |
180 |
235 |
118 |
100 |
190 |
280 |
130 |
125 |
200 |
290 |
148 |
150 |
210 |
310 |
172 |
200 |
230 |
350 |
210 |
250 |
250 |
415 |
240 |
300 |
270 |
450 |
264 | |