Introduction
Bettis® D-Series pneumatic rack and pinion actuators are engineered for reliability and cost-effectiveness in valve automation, particularly for quarter-turn applications like plug, butterfly, and ball valves. They are compact and lightweight, making them suitable for tight piping installations.

Operating Ranges
The actuators deliver torque outputs up to 22,379 lb-in for double-acting models and 7,939 lb-in for spring-return models. They function at pressures from 40 to 120 psig and temperatures from -4°F to +175°F, with optional trims extending to -40°F to +250°F.

Materials of Construction
The body is constructed from anodized aluminum alloy, with options for stainless steel pinion gears. Pistons are made from aluminum alloy with corrosion protection, and fasteners are 304 stainless steel.

Sizing Data
Available in ten spring-return and ten double-acting models, compliant with ISO 9001, NAMUR, DIN 3337, and ISO 5211 standards.

Technical Data
Includes torque ratings, operating pressures, temperature ranges, and media specifications. The actuators support a 96° total travel adjustment.

Control Systems
Compatible with various control systems, including NAMUR components and BettiSwitch II.

Dimensions and Models
Detailed dimensions and specifications for models 0012 to 1600, including bore, stroke, weight, and operating time.

Overview
This document provides technical specifications and ordering information for the Bettis D-Series actuators, detailing various configuration options and codes.

Actuator Size and Type
The actuators are categorized into D-Series Double-Acting (DD) and Spring-Return (DS) types, with body sizes ranging from 0012 to 1600.

Tapped Mounting Bolt Holes
Options include UNC (B), Metric (M), DIN (D), and a combination of UNC and NAMUR patterns (U).

Travel Stops
Dual Travel Stops (2) are standard for most models, except for the 0012 model which has no travel adjustment (0).

Assembly Code
Specifies fail positions: Fail-CW (A, B) and Fail-CCW (C, D), with mounting options in line or across line.

Spring Set Number
Ranges from 00 (no springs for Double-Acting) to 06 for Spring-Return models.

Color Code
The standard color is Bettis orange (K).

Insert Code
Inner square options are detailed in an options chart, with ISO/DIN sizes as standard.

Indication Knob
Options include visual indication with a disk (D), a knob (K), or no indicator (N).

Temperature Range
Standard (-4 to 175F), High (-4 to 250F), and Low (-40 to 175F) temperature ranges are available, with further options upon request.

Disclaimer
The document includes a disclaimer about the accuracy of the information and the right to modify product designs or specifications without notice.