Speeflo 449-500 Owner'S Manual Download Page 27

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Specifications

Maximum Working Pressure............5000 psi (345 bar)
Filter Area.........................................18 In2 (116 cm2)
Outlet Ports ......................................(1) 1/4" NPT(F) for bleed

valve
(1) 3/8" NPT(F) with 1/4
NPSM(M) hose connection
(1) 3/8" NPT(F) plugged for
additional gun hookup.

Wetted Parts ....................................Carbon steel with electroless

nickel and cadmium plating,

stainless steel, tungsten

carbide,

PTFE

Operation

The 930 Series Outlet Manifold Filter has a built in spring
actuated check valve. It uses a replaceable filter element with a
stainless steel check ball permanently trapped inside the
element. The element is available in the following screen sizes:

Part #

Mesh

Typical Applications

930-005

Heavy materials, high builds, block
filters, elastomerics, multicolors, etc.

930-006

50*

Conventional architectural and
protective coatings

930-007

100

Lacquers, stains, fine finishes

The filter cap has a long stem which acts as a spring guide and

controls ball travel within the filter element. The filter body has a

replaceable tungsten carbide seat which is secured by a

PTFE

o-ring.
The incorporation of this spring loaded check valve into the filter
manifold greatly reduces hydraulic shock at stroke changeover
and reduces opportunity for hydraulic stalls. Always use the 930
Series Filter Element / Check Ball in the PowrTwin 5500DI
System. Do not use 920 Series filter elements. Do not run the
system without a 930 Series filter element/check ball. When
using heavy high viscosity materials, use the 5-mesh filter
element/check ball.

Cleaning

Clean filter regularly. Dirty or clogged filters can greatly reduce
filtering ability and cause a number of system problems including
poor spray patterns, clogged spray tips, etc.
To clean the filter, shutoff system and relieve all system pressure.
See the Pressure Relief Procedure on Page 12.
Remove filter cap with spring guide (1) and spring (2). Pull filter
element with check ball (3) straight out of filter body (8).
Thoroughly clean inside filter body (8) filter element with check
ball (3) and filter cap with spring guide (1) with appropriate
solvent. Use care in handling parts as dirt, debris, scratches or
nicks may prevent o-rings or gaskets from sealing.
The 930 Series Filter Elements filter from the inside out. Be
certain to clean the screen element thoroughly on the inside.
Soak in solvent to loosen hardened paint. etc. or replace.

Service

1. Inspect ball trapped inside filter element (3). If ball has

pressure cuts or scratches, replace filter element.

2. If ball is cut, remove

PTFE

o-ring (6) with an o-ring pick and

remove Tungsten carbide seat (7). Check carbide seat for
nicks or grooves. If seat is nicked or grooved replace.

3. Removal of the

PTFE

o-ring (6) for seat (7) inspection will

damage the o-ring and require replacement.

4. Remove the spring (2) from the filter cap (1). Measure the

length of the spring, uncompressed. If it measures less than
3/4" from end to end, replace. Push spring back onto spring
guide until it "snaps" in place.

5. Inspect the

PTFE

gaskets (4, 5) and o-ring for deformity,

nicks, cuts, etc. Replace as required.

NOTE: Inspect all parts thoroughly.

Reassembly

After inspecting and cleaning all parts, reassemble the filter
assembly.

1. Place Tungsten carbide seat (7) in filter body, using care to

place the beveled side up.

2. Place

PTFE

o-ring (6) in groove on the outer diameter of the