Keystone-K-optiSeal figure 1417 butterfly valve manual actuator

Keystone Optiseal Resilient Seated Butterfly Valve with Manual Actuator

Product Description

The Keystone OptiSeal Figure 14/15/16/17 is a resilient seated butterfly valve complete with manual actuator, configurable as a handle or gear operator.

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Features

Keystone Optiseal Resilient Seated Butterfly Valve

Top bushing absorbs actuator side thrust loads.
Actuator flange acc. ISO 5211.
High solid, glossy, silicone free, paint system ensuring excellent corrosion resistance.
Extended body neck allows pipe insulation.
Body locating holes ease installation and centering between the flanges.
Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and bubble-tight shut-off.
The seat is field replaceable and fully isolates the body and stem from the flow.
Primary stem sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
A secondary shaft sealing provides back‑up safety.
No flange gaskets required.
High Cv value.
Top and bottom shaft bearings for optimized support and minimum friction in all body materials up to DN 300, except cast iron.

Emerson Manual Actuator

ENGINEERED FOR RELIABILTY – Robust construction in a variety of materials with features such as full and life-long lubrication available.
FLEXIBLE CONFIGURATION – Where available with the type of manual actuator, the solution can be configured with adjustable travel stops, worm and quadrant style gearboxes and anti-clockwise operation.
SIMPLE INSTALLATION – Modular mounting concept for easy attachment to Emerson valves and can be mounted in most orientations.
CUSTOMIZABLE OPTIONS – Achieve reliable efficient isolation to match your specific application with many available optional extras including chain wheels, limit switches, floor stands and security features.