Data Sheet
www. sherregulators.com
Bulletin 71.7:167D
D103235X012
June 2011
167D Series Switching Valves
P1184
TYPE 167DA THREE-WAY SWITCHING VALVETYPE 167D TWO-WAY SWITCHING VALVE
P1185
Figure 1. 167D Series Switching Valves
Introduction
The 167D Series switching valves are typically used
to deliver constant reduced pressure of gaseous
fl uids to pilot-operated controllers and other
pneumatic instrumentation.
• The Types 167D and 167DS are two-way
switching valves.
• The Types 167DA and 167DAS are three-way
switching valves.
Features
•
Compact—The Types 167D and 167DA
switching valves are engineered for outstanding
performance in a compact, lightweight package.
• Easy, Accurate Adjustment
—
With a choice of
springs for optimum resolution, the switching point
is set to a speci c requirement by an adjusting
screw atop the spring case.
• Sour Gas Service Capability—NACE MR0175
and MR0103 compliant construction available.
• Optional Stainless Steel Construction—
The Types 167DS and 167DAS provide high
resistance to corrosion especially bene cial for
offshore applications.
• Ease of Maintenance—No special tools are
required to perform maintenance, and
all maintenance can be performed with the
valve in the line.
• Rugged Construction—The Types 167D and
167DA switching valves are engineered for longer
service life with minimal maintenance requirements.
• Corrosion Resistant Fasteners—Bolting and
adjusting screw are double zinc-chromated for
enhanced corrosion resistance. Optional stainless
steel bolting and adjusting screw are also available.