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Slow closing check valve

365bet足球投注网 - Check valve - Slow check valve

DHH44X / H Micro-resistance Slow-closing Silencer Check Valve

DHH44X / H micro-resistance slow closing muffler check valve structure diagram
DHH44X / H micro-resistance slow closing muffler check valve structure diagram

Scope of application

DHH44X / H micro-resistance slow closing muffler check valve is suitable for industrial, urban water supply and drainage pipelines and high-rise residences, high-end hotels, outlets of pressurized water pumps. The design fully considers the requirements of the use environment, and adopts the inclined plate structure to achieve no vibration, no noise, stable operation, ensure the quiet environment of the hotel and residence, and have the effect of energy saving. By delaying the shutdown, the local backflow of water is discharged into the system, thereby greatly reducing the hydraulic pressure of the backflow when the pump is stopped, and eliminating the occurrence of destructive water hammer peaks. Abrasion resistance, long service life, easy maintenance, etc.

Performance parameter

model Nominal pressure (MPa) ﹞ Test pressure (MPa) proper temperature Applicable medium
case seal
DHH44X
DHH44H
1.0 1.5 1.1 ≤80 ℃ Clean water, sewage, sea water, mud water
1.6 2.4 1.75

Parts material

Part Name Valve body Valve plate Sealing ring Valve stem Buffer shaft cylinder
material Gray cast iron, carbon steel Carbon steel Nitrile rubber stainless steel stainless steel

Dimension table

DN
(㎜)
200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 2000
L 230 250 270 290 310 330 350 390 430 470 510 550 630 710 790 950
H 550 630 690 780 860 910 980 1070 1220 1320 1430 1550 1800 1980 2150 2550
B 450 520 590 670 750 780 850 970 1080 1200 1300 1450 1670 1880 1950 2450