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KVZB

Product catalog summary

Ball Valve Unit KVZB Overview
This document provides detailed specifications and configurations for the Ball Valve Unit KVZB, a configurable product available through an online configurator. The unit can be actuated automatically using a pneumatic quarter turn actuator or manually with a hand lever.

EX Certification
The unit is certified under ATEX for gas (II 2G) and dust (II 2D) environments, with specific ignition protection types and temperature ratings.

Application and Positioning
The valve can be controlled to open or close based on an analogue positioning signal. It features a position indicator that can be visual or electrical, with options for inductive or magnetic reed sensors.

Pilot Valve Options
The unit includes a pneumatic pilot valve mounted via the NAMUR interface, available in standard piston slide or poppet valve versions, each offering specific advantages in flow rate and tolerance to compressed air quality.

Connection Types
Available connection types include flange, thread, terminal, and welded ends, compliant with various international standards.

Valve Functionality
The valve supports 2/2-way and 3/2-way configurations with L-bore and T-bore options, allowing for various flow paths and normal positions.

Mode of Operation
Options include double-acting and single-acting actuators, each with specific requirements for compressed air and torque generation.

Safety Functions
The unit offers safety functions to return to a normal position or hold position using different pilot valve configurations, depending on the operating mode.

Operating Pressure and Safety Factor
Specifications include operating pressure and recommended safety factors for different pipeline media to ensure adequate torque reserve.

Corrosion Resistance
The unit features high corrosion resistance due to an epoxy coating and stainless steel actuator shaft.

Technical Data and Compliance
The datasheet includes design, operation mode, size, weight, and compliance with LABS (PWIS) and RoHS standards. It also details ATEX categories and explosion protection types.

Ordering Information
The document provides ordering data for the modular product system, including part numbers and descriptions for various configurations and accessories.

Peripherals and Accessories
A comprehensive list of peripherals and accessories is provided, including ball valves, reducing sleeves, mounting kits, hand levers, actuators, solenoid valves, sensor boxes, position indicators, and positioners, each with specific design and application details.

Catalog excerpts

Ball valve unit KVZB

Open the catalog to page 1

Ball valve unit KVZB Characteristics Further information → kvzb Ordering data - modular system Configurable product This product and all its product options can be ordered online via the configurator. Actuation Automatic The process valve is actuated using a pneumatic quarter turn actuator. The process valve is actuated using a hand lever. ATEX category for gas II 2G Type of ignition protection for gas c T6 … T3 X ATEX category for dust II 2D Type of ignition protection for dust c T80 °C … T200 °C X Explosion-proof ambient temperature rating 0°C ≤ Ta ≤ +60°C Application Controlled The required...

Open the catalog to page 2

Ball valve unit KVZB Characteristics Magnetic reed Operating voltage range 0 ... 175 V DC Max. output current 250 mA Operating voltage range 0 ... 120 V AC Pilot valve The pneumatic pilot valve is mounted directly on the quarter turn actuator via the NAMUR interface. Standard version Poppet valve version A pneumatic pilot valve, with the design principle of a piston slide, is mounted directly on the quarter turn actuator via the NAMUR interface. The piston slide design is the first choice for all standard applications. The technology enables overlap-free switching and, compared to the poppet...

Open the catalog to page 3

Ball valve unit KVZB Normal position 1-2 connected, 3 closed, T-bore 1-3 connected, 2 closed, L-bore 1-3 connected, 2 closed, T-bore 2-3 connected, 1 closed, L-bore 2-3 connected, 1 closed, T-bore

Open the catalog to page 4

Ball valve unit KVZB Operating position 1-2-3 connected, T-bore 1-3 connected, 2 closed, L-bore 1-3 connected, 2 closed, T-bore 2-3 connected, 1 closed, L-bore 2-3 connected, 1 closed, T-bore 1-2 connected, 3 closed, T-bore Mode of operation Double-acting The double-acting quarter turn actuator requires compressed air for each direction of movement. In this mode of operation, the torque for opening or closing the process valve is generated purely via the compressed air. With the single-acting quarter turn actuator, the incoming compressed air moves the pistons in one direction. This generates...

Open the catalog to page 5

Ball valve unit KVZB Characteristics Hold position with 5/2B pilot valve The valve is held in the current position if the operating voltage supply fails. This function is only possible with the “double-acting” operation mode and is carried out by a 5/2-way double solenoid pilot valve which remains in the position last occupied before the fault occurred when pressure is applied to one side of the actuator. If the compressed air supply fails, the valve cannot be guaranteed to remain in the current position. Operating pressure The operating pressure available for actuating the quarter turn actuator....

Open the catalog to page 6