Specifications
This section lists the specifications for the Type D50 pressure regulator. Factory specifications are stamped on the
nameplate fastened on the regulator at the factory.
Valve Temperature Rating
(1)
Stainless steel Disk
Cast iron:
400°F / 204°C
Teflon
®
Disk
Cast iron:
300°F / 149°C
Main Valve Material
Cast iron
Approximate Weight
3.6 to 13.6 lbs / 8 to 30 kg
Valve Sizes
NPS 1/2, 3/4, 1, 1-1/4, 1-1/2 and 2 /
DN 15, 20, 25, 32, 40 and 50
End Connection Styles
NPT and BSPT
Valve Pressure Rating
(1)
Stainless steel Disk
Cast iron:
200 psig / 13.8 bar
Teflon
®
Disk
Cast iron:
300 psig / 21.0 bar
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
Principle of Operation
The Type D50 is a direct-operated regulator.
Downstream pressure is registered through the control
ports to the under side of the diaphragm. As the
pressure on diaphragm approaches a balance with the
force exerted by the adjusting spring, disk is throttled
to a position where just enough fluid flows to maintain
the set delivery pressure.
Intended Purpose
The Type D50 Direct Acting Pressure Regulator
is a compact, moderately priced steam, water or
gas regulator intended to satisfy most fundamental
requirements for pressure reduction.
Teflon
®
is a mark owned by E.I. du Pont de Nemours and Co.
Installation
▲
WARNING
Personal injury or system damage
may result if this regulator is installed,
without appropriate overpressure
protection, where service conditions
could exceed the limits given in
the Specifications section and/or
regulator nameplate.
Additionally, physical damage to the
regulator may result in personal injury
or property damage due to escaping of
accumulated gas. To avoid such injury
and damage, install the regulator in a
safe location.
Under enclosed conditions or indoors,
escaping gas may accumulate and be an
explosion hazard. In this case, the vent
should be piped outdoors.
For regulator constructions with a
spring case vent, the vent should be
kept open to permit free flow of gas
to the atmosphere. Protect openings
against entrance of rain, snow, insects
or any other foreign material that may
plug the spring case vent or vent line.
All pressure equipment should be
installed in a non-seismic area;
should not be exposed to fire; and
should be protected from thunderbolt
(lightning) strikes.
2
Type D50
