Keystone Figure 129/139 Butterfly Valve with Manual Actuator
Keystone Figure 129/139 Butterfly Valve with Manual Actuator
Product Description
The Keystone Figure 129/139 is a heavy duty resilient seated butterfly valve featuring a steel reinforced cartridge design seat complete with manual actuator, configurable as a handle or gear operator.
Avertissement
Cette action risque d’annuler votre devis. Voulez-vous poursuivre ? La poursuite de cette action convertira votre panier en commande standard afin que vous puissiez apporter des modifications.
Cette action risque d’annuler votre devis. Voulez-vous poursuivre ? La poursuite de cette action convertira votre panier en commande standard afin que vous puissiez apporter des modifications.
Replaceable, metal-reinforced seat, completely encapsulated by rubber, isolates the stem and body from the media and eliminates seat distortion due to high vacuum or turbulence.
Primary stem seal, formed by preloaded contact of disc hub with flatted seat surfaces, completely isolates stem and body from the line media.
Secondary stem seal, formed by an engineered interference fit of the stem through the seat, provides additional sealing integrity.
Rounded, polished disc edge provides full 360 degree concentric seating, minimum flow restriction, lower seating and unseating torques and maximum seat life.
Superior, one-piece thru-shaft design provides high-strength and positive disc control. Shaft ends are standardized for operator interchangeability.
Self-locking disc screws allow quick and easy disassembly and provide a positive connection.
Self-adjusting, bi-directional stem seal is suitable for full industrial vacuum and pressure, preventing external contamination of the stem area.
Heavy-duty, corrosion-resistant top bushing absorbs actuator side thrust loads.
Each valve is factory tested to 110 percent of specified pressure rating assures drop-tight shut-off.
Cast-in top plate is an integral part of the body and is standardized to allow direct mounting of all Keystone actuators.
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.