Tecnidro - Model HMC-NR -Check Valve

The valve closes totally the pipe line when back flow occurs. The valve is complete with an hydraulic control circuit able to regulate operation`s speed during closing, preventing surge.

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diaphragm sealing

fire protection system

Pump protection; prevention of line emptying; balance in inter-connected hydraulic lines.
water supply and distribution
fire protection systems
water treatment
high-rise buildings
fuel stock plants
water supply stations (airports, marine and fluvial ports)
sport centers (swimming pools, pleasure grounds)
pump stations

new shaft/diaphragm/seal disc assembly
fully center guided shaft
only one moving assembly (Shaft-Diaphragm-Seal disc) upstream and downstream ports on valve cover for an easy maintenance
easy assembly, compactness and disassembly
head loss and cavitation risks reduction
wide hydraulic profile
excellent corrosion and cavitation strenght
conformity with both European and American standards
multiple function covers
perfect seal
removable seat
PATENTED

high hydrodynamic section globe body, without stagnation pockets
open pass 100% of nominal diameter
standard ductile cast iron casting
epoxy-polyester resin powder painting
entirely guided travel shaft/diaphragm/seal disc assembly
standard stainless steel seal seat with cavitation risks reduction, bronze on request
stainless steel bolts
brass shaft
stainless steel guide shaft
double neoprene, nylon reinforced diaphragm
NBR, nylon reinforced diaphragm
easy disassembly due to the new ports design on the valve cover
easy maintenance and access to internal parts without removing the valve from the pipeline
purchased valve function can easily be changed with simple pilot circuit modifications
shaft indicator

Tecnidro - Model HMC-NR -Check Valve

Typical Applications

Main Features

Technical Characteristics