30" - 48" Butterfly Valves, Style 1450
Overview
The Style 1450 large diameter butterfly valve offers many of the same advantages the smaller diameter butterfly valve offers you. – ruggedness, bottle-tight seal, corrosion-free bearing and sealing surfaces, freedom from excessive maintenance – plus the added dimension of a ‘flow-through’ vane.
The innovative design of the Clow Style 1450 flow-through vane provides maximum free flow area without sacrificing vane strength. This greater flow through area results in less pressure drop and pumping costs than conventional designs.
The exclusive patented vane-seat and valve-seat construction of the Clow Style 1450 butterfly valve assures you of 100% bubble-tight sealing for the life of the valve. The stainless steel body seat ring is made integral with the valve body to assure a permanent, corrosion-resistant seating area. The vane seat is a special compound of Buna-S and natural rubber, firmly clamped to the vane by a stainless steel seat-retaining ring and stainless steel self-locking screw fasteners. This construction forms a positive lock between the vane and rubber seat, which assures 360 degree bottle-tight seating. The vane seat is adjustable and totally field replaceable, if required.
All shafts are of 18-8 type 304 stainless steel keyed for operator connection and pinned to the vane with stainless steel taper pins secured with stainless steel lock nuts…full metal to metal contact is assured with no leakage to shaft ways. Shafts are manufactured to meet or exceed AWWA Standard C-504. Shaft diameters are as specified for the various valve classes.
The Clow Style 1450 butterfly valve is permanently lubricated and requires no periodic exercising or stem replacement. The closing action of the vane is self-cleaning and there are no pockets in which sediment formations can deposit, resulting in longer lifetime service. For underground applications, the Style 1450 is supplied with o-ring shaft seals contained in bronze cartridge. Underground operators and end covers are permanently sealed against ground water infiltration.
All critical bearing and sealing surfaces are stainless steel, rubber, bronze or Teflon (A DuPont Registered Trademark). This is your assurance of long life, easy and efficient valve operation. Further protection can be afforded the Clow Style 1450 with the added option of AWWA C-550 Epoxy coating on interior valve surfaces. C-550 coating provides effective protection from corrosion caused by tuberculation.
When you install the Clow Style 1450 butterfly valve, you are making a sound investment for the future in dependable, maintenance-free service, bottle-tight sealing, and long valve life. The Clow Style 1450 will prove to set a new industry standard for large diameter butterfly valves.
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