scope:

This standard describes hydraulic and pneumatic cylinder and vane-type actuators for operation of valve and slide gates in utility systems.

Actuator types. Actuators described in this standard are divided into the following types (Figure 1.1):

1. Cylinder type producing a linear motion.

2. Quarter-turn cylinder type producing a rotary motion.

3. Quarter-turn vane-type actuator producing a rotary motion.

Actuator function. Actuators shall produce a rotary or linear motion to actuate a valve or slide gate in open-close, throttling, or modulating service.

Excluded actuators. The following types of actuators are not included in this standard:

1. Electric motor actuators.

Other exclusions. This standard does not include the following:

1. Piping, controls, and positioners for cylinder actuators.

2. The mechanism connecting a cylinder actuator to a valve or slide gate.

Purpose

The purpose of this standard is to define the minimum requirements for hydraulic and pneumatic cylinder- and vane-type-actuating devices for valves and slide gates, including sizing considerations, design, verification, delivery, handling, and storage.

Application

This standard can be referenced in the purchase documents for hydraulic, pneumatic cylinder, and vane-type-actuating devices for valves and slide gates. The stipulations of this standard apply when this document has been referenced and then only to such actuating devices for valves and slide gates.