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Parker’s Global P31D and P32D
Global Dump Valves efficiently manage pressure by safely and quickly exhausting
pneumatic energy in an industrial environment. These quick dump valves are high
flow, normally closed, 3-port, 2-position directional control valves. Upon
energizing the solenoid, inlet air is applied to the top of the piston. The
piston pushes against the spring and opens the main valve providing full flow
air to the downstream. When the solenoid is de-energized, the main valve closes
allowing downstream air to exhaust rapidly through the bottom plug. The bottom
plug is tapped so that exhaust may be piped away or fitted with a
muffler/silencer. These global dump valves can be mounted using a modular
connector to other P31/P32 Global Air Preparation products.
Parker P31S and P32S Global Soft
Start Valves offer increased productivity by providing safe introduction of
pressure to machines or systems and potentially reducing damage that can occur
at start up. They allow the pressure to gradually build to a set point before
fully opening to deliver full air line pressure. The controlled introduction of
pressure can be an important safety factor and prevent damage to tooling when
the air pressure is introduced at machine or system start up. When pressure is
supplied to the inlet port, gradual filling of the downstream system occurs
through the adjustment needle valve. The piston opens the main valve when the
downstream side of the valve reaches approximately 60% of the supply pressure.
The ramp up time to reach the switch-over pressure is adjustable via the needle
valve in the cover. The P31S and P32S Global Soft Start Valves can be mounted
using a modular connector to other P31 and P32 Global Air Preparation Products.
P31T and P32T Modular Global
Combined Soft Start/Dump Valves provide for the safe introduction of pressure
to machines or systems. Soft start/dump valves, when set, allow the pressure to
gradually build to the set point, before fully opening, to deliver full flow
air line pressure. The controlled introduction can be an important safety
factor and prevent damage to tooling when air pressure is introduced at machine
or system start up. When the valve is installed into the pneumatic system and
the pilot operator receives no signal, the air is blocked at port 1. When a
pilot signal is received at the pilot operator, the valve shifts, closing the
connection between ports 2 and 3. At the same time, air flow begins between
ports 1 and 2 at a slow rate, controlled by the needle valve located on top of
the valve. When the downstream pressure reaches approximately 60% of the supply
pressure, the main valve spool opens, allowing full flow through the valve in
the system. If pilot signal or system pressure is lost, the valve returns to
its initial state, venting the downstream pressure through port 3.
Pressure supply piping must be the
same size as the inlet port or larger, to ensure the pilot valve receives
sufficient pressure supply during high flow conditions. The valve should be
mounted downstream of the FRL, with the soft start adjustment needle easily
accessible. The P31T and P32T Global Soft Start/Dump Valves can be mounted
using a modular connector to other P31 and P32 Global Air Preparation Products.
Note: soft start/dump valves are not intended to be used as emergency shut-off
valves, but should be placed after a manual shut off valve.
Markets
• Machine Tools
• Misc. Industrial
• Misc. Manufacturing
• Air and Gas
• Appliances
• Factory Automation
• Entertainment Automation
• Molding
• Packaging Machinery
• Printing and Marking Equipment
• Vehicle Assembly Facilities
• Wearing Apparel
• Food and Beverage
• Misc. Processing
Features/Benefits:
·
Dump Valves
o
Safely and quickly exhaust pneumatic energy
o
Robust & lightweight aluminum
construction
o
3-way, 2-function automatically dumps downstream
pressure on the loss of pilot signal
o
High flow and exhaust capability
o
Solenoid or air pilot operation options
o
Silencer included
·
Soft Start
o
3-way, 2-position function ensures safe pressure
introduction
o
Adjustable slow start
o
Solenoid or air pilot operation options
·
Soft Start/Dump Valves
o
Available with an adjustable soft start to allow
a gradual introduction of pressure into machinery on start up
o
3-way, 2-position function ensures safe pressure
introduction
o
High flow and exhaust capability
o
Solenoid or air pilot operation options
o
Adjustable slow start
Applications
To be used in combination with valves and cylinders main function to protect and as safety device in:
• Positioning
• Cutting
• Machining
• Pick and place and packaging and wrapping systems
• Safety factor to prevent damages to tools reduces the chance of injuries in the work place when pressure is needed to be depressurised
