Janus Sv Series User Manual

Page: 5
FM-200® FILL MANUAL
Revision B
Document # DOC180
Issued: August 16, 2010
Revised: April 2, 2012
Section 2 Cylinder Assembly
2.3.1 Sv Series Valve Features
(See Figure 2.3.1)
e Sv Series valve has six key features:
1. Valve Actuation Connection: A threaded connection located on top of the cylinder valve serves as the
attachment point for the electric (primary) or pneumatic (slave) valve actuator.
2. Pressure Gauge: A pressure gauge is mounted to the cylinder valve exterior to provide a visual measure
of the cylinder’s internal pressure. e gauge shall not be removed while the cylinder is under pressure.
3. Rupture Disc: A frangible rupture disc is tted to the valve body opposite the pressure gauge. It
functions as an emergency relief device in the event of excessive internal pressure within the cylinder.
Its rupture point is between 850 psi (58.6 bar) and 1000 psi (68.9 bar). e rupture disc shall not be
removed while the cylinder is under pressure.
4. Low-Pressure Supervisory Switch: A low-pressure supervisory switch is mounted to the cylinder valve
and continuously monitors the internal pressure of the cylinder. It shall not be removed while the
cylinder is under pressure.
5. Discharge Outlet: A 1 1/4 in (32 mm) FNPT connection serves as the attachment point for the
discharge piping.
6. Pilot Actuation Port: A 3/8 in (10 mm) FNPT connection (shipped with a pipe plug) serves as the
attachment point for the pilot actuation piping in multiple cylinder systems, providing the actuation
pressure used to open the slave cylinder valve(s). is can also be used for attachment of the discharge
pressure switch in single cylinder arrangements. e pipe plug shall remain in place at all times when
the port is not connected to pilot actuation piping or a discharge pressure switch.
Figure 2.3.1 Sv Cylinder Valve Assembly
Pilot Actuation
Port
Pipe Plug
Rupture Disc (3)
Pressure Gauge (2)
Low-Pressure
Supervisory Switch (4)
Discharge Outlet
Anti-Recoil
Safety Plug
Safety Cap
Discharge
Outlet (5)
Pilot
Actuation
Port (6)
Low-Pressure
Supervisory Switch (4)
Valve Actuation
Connection (1)
Ensurethatthepilotactuationportpipeplugisinplacebeforeattemptingtollthecylinderassembly.Failureto
dosomayresultinagentleakingoutofthepilotactuationportduringthellprocedure.

Janus Sv Series Specifications

General

Brand	Janus
Model	Sv Series
Category	Safety Equipment
Language	English