ND150 nodular cast iron butterfly valve, WAFER type lever actuation, nodular cast iron disc, for ø160mm pipe.
Device to interrupt or regulate the flow of a fluid in a duct, increasing or reducing the passage section by means of a plate, called a "butterfly", which rotates on an axis.
By reducing the passage area, the local pressure drop in the valve increases, reducing the flow.
They are used in air ducts, pipes for liquids and in mechanical applications, such as in some types of heat engines.
With centering lugs for quick and easy installation.
With long neck for insulated installations.
All the pieces are identified with the casting number of the foundry, for quality control.
The absence of pins and screws in the Butterfly, with the drive of the shaft, avoids risks of corrosion and the formation of impurities.
Monobloc axle in one piece, avoiding breakage with possible water hammer.
The anchoring system of the elastometer with the body prevents it from moving during maneuvers, thus guaranteeing its durability.
Manufactured under the EN / 593 / BS5155 / MSS SP-67 standard.
WRAS approved
Mounting between flanges:
From DN-50 (2'') to DN-300 (12'') multi-flange system, which allows mounting between PN-6, PN-10, PN-16, ANSI flanges indistinctly with a single butterfly valve model -125/150 Lbs, and BS 10-D/E
From DN-350 (14''), it admits assembly between PN-10, PN-16, ANSI-125/150 Lbs flanges. and MSS-SP-44 (other standards on request).
Standard working pressure: 16 bar (DN 50-300) and 10 bar (DN 350-1200).
Temperature limits from -40ºC to + 180ºC (depending on elastomers and coatings).
Our design, up to DN-500 mm (20''), incorporates four centering lugs that allow correct alignment and quick installation between flanges.
From DN-600 mm (24''), in addition to the centering lugs, they incorporate threaded holes on both sides of the body, their dimensions being in accordance with the requested drilling standards.
As it is a model made for mounting between flanges, the mechanical stresses of the pipe are transmitted to the butterfly valve only by compression on the body, therefore it lacks mechanical tensile stresses, which could cause sealing problems. Bear in mind that from DN-600 mm (24'') the bodies have four threaded holes on each face.
9.7 Weight Kg.
