Principle of operation

With system pressure on, the regulator poppet valve assembly is

in the closed position when the adjusting knob is turned fully

counter clockwise (no spring load). By turning the adjusting knob

clockwise, the diaphragm / piston moves downward allowing filtered

air to flow in through the orifice created between the poppet

assembly and seat.

Auto-drain - IP2AM

The Monnier internal auto-drain is a pilot operated unit. As the

water level in the bowl rises, the float (13) lifts, allowing line

pressure to act on a piston, which opens the main discharge valve.

As the liquid level falls, the float closes and line pressure shuts

the main valve. Under zero pressure conditions, the automatic

drain will be in the open position, allowing any liquid to drain away.

Automatic dump valve - IP2DM

This is a spring loaded valve which will allow the filter / regulator

to automatically drain when the pressure in the bowl drops

below 0.06 bar (i.e. when air to the plant is shut off).

The units can also be drained manually by pushing the protrouding

valve stem sideways or upwards.

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P504-18) supplied with the product.

Warning:

Polycarbonate bowls and sight levels on metal bowls can be

attacked by phosphate ester fluids, solvents, paint thinners and

carbon tetrachloride. These and similar substances should never

be allowed to come into contact with the bowl. Certain compressor

lubricating oils also contain additives harmfull to polycarbonate

and where there is any doubt we recommend, in the interests of

safety that a metal bowl or bowl guard should be fitted.

Installation note:

Fit into a horizontal pipeline, with the bowl vertically downwards,

as close as possible to the equipment it is serving. Connect the

unit so that the air flow is in the direction shown by the arrow cast

on the body. A pressure guage fitted to one of the ports is

recommended (to show the secondary pressure). The port(s) not

in use should be blanked off with the plugs supplied (P).

How to order

Example: 1 off IP2AM Monnier international compressed air filter

/regulator having a female 1⁄2" screwed BSP (BS 21 - Rp)

connection.

Note 1: Unless otherwise instructed, the filter / regulator will be

supplied with a polycarbonate bowl, 0.5 to 10 bar control spring,

5 μm element and polycarbonate bowl as standard. If a metal bowl

is required (with or without sight level) it must be clearly specified

on the order. The IP2M manual drain is available with metal bowl

only.

Note 2: If any optional extras are required, they must be clearly

specified on the order.

13

IP2DM

TI-P504-17 CH Issue 2

IP2, IP2A and IP2D Spirax-Monnier International Compressed Air Filter / Regulators

Page 5 of 6

Compressed air products

Filter / regulators

Adjustment knob

IP2M

(having a metal bowl)

IP2AM

9.4.14