The Permeability Plugging Tester (PPT), is a modification of the 500 ml high pressure, high temperature filter press. The instrument is used for making filtration tests on plugging materials without the interference of particle settling on the filter medium. Typical differential pressures are much higher than those seen in standard HTHP filtration testing. The pressure cell is the same as that used on the HTHP Filter Press, but it is inverted with the filter and receiver on top. Several filter mediums may be used, such as 1/4" thick fused aluminum oxide disks, conventional filter paper, or sintered metal filters. The cell is pressurized with hydraulic oil (#171-96-1). A floating piston separates the oil from the test fluid within the pressurized cell. The conventional cell may be operated to 2000 psi by using hardened steel set screws to secure the end caps. For elevated pressures, OFITE has designed a special cell with a working pressure of up to 4000 psi, pressurized with the conventional hydraulic pump.

Heating Jacket Components:
#154-20 Thermometer, Dial, 8" Stem, 50-500°F, 0-250°C
#171-00 Heating Jacket, 500 ml, 115 Volt
#171-01 Heating Jacket, 500 ml, 230 Volt
     #164-32 Male Connector for Power Cable, 230 Volt
     #170-10 Pilot Light for Thermostat
     #170-11 Heating Element, 115 Volt, 200 Watt
     #171-05 Location Pin for Cells
     #171-32 Midget Knob
     #171-36 Thermostat Cover
     #171-44 Rubber Foot, 3/4"
     #171-71 Thermostat
     #171-82 Power Cord with Male Plug, 8 Foot, 115 V
     #171-94 Cell Rest Plunger Assembly
Cell Components:
2 #170-16 Valve Stem
1 #170-19 Filter Paper, 2 1/2", 100/pkg
10 #170-53 Ceramic Filter, 10 dcy, 35 micron, 2.5" x 1/4"
1 #170-72 Spacer for Filter Paper, SS, 1/4"
1 #171-84-03 Strap Wrench
1 #171-85 Cell Assy, Complete w/Caps, 4000 psi
1 #171-90-15 Adjustable Wrench, 6" Crescent
1 #171-93 Piston for Cell
1 #171-95 T-Handle for Piston
Inlet Pressuring:
#171-26 Hose, 5000 psi, 3/16" x 3 foot
#171-86 Inlet Pressure Manifold Assembly, 4000 psi
     1 #144-12 Ell, Male, 1/4"
     1 #171-41 Gauge, 5000 psi, 2 1/2" Face, 1/4" NPT
     1 #171-84-02 Reducing Bushing, 3/8" MNPT x 1/8" FNPT
     1 #171-90-02 Quick Coupler, 1/4" NPT, Female
     1 #171-90-03 Quick Coupler, 1/4" NPT, Male
     1 #171-90-04 Cross, 1/4" NPT, 316 SS
     2 #171-90-06 Reducing Bushing, 1/4" MNPT x 1/8" FNPT 
     1 #171-90-07 Hex Nipple, 1/4" NPT
     1 #171-90-08 Valve Stem, Cell Hydraulics Entry
     1 #171-90-13 Adapter, 1/4" Flare x 1/4" MNPT
     1 #171-92-1 Safety Relief Valve, Inlet Manifold, 4000 psi
     1 #171-98 Ball Valve, 1/4", Inlet Pressure Line
#171-90-05 Reducing Bushing, 3/8" MNPT x 1/4" FNPT, Hose to Pump
#171-90-12 Elbow, 1/4" MNPT, 316 SS

#171-96 Hydraulic Hand Pump, Single Speed
#171-96-1 Hydraulic Oil for Hand Pump, 32 oz
Outlet Pressuring:
#153-14 Graduated Cylinder, Glass, 50 ml x 1 ml
#170-04 CO₂ Pressuring Assembly, Complete
     1 #143-02-10 Puncture Head Assy, Complete
     1 #143-03 Barrel for CO₂ Bulb
     1 #170-08 Regulator, Concoa, High Pressure
     1 #170-20 Manifold Block for Valve Stem
     1 #170-32 Needle Valve f/Regulator Outlet, 1/8" NPT
     1 #171-22 Retainer Pin
     1 #171-34 Gauge, 1500 psi, 2" Face, 1/4" NPT
#170-90-09 Valve Stem for PPT Cell Filtrate Outlet
#170-90-10 Valve Stem f/PPT Receiver Entry (Both), 1/8" NPT
#171-10 Back Pressure Receiver, 100 ml, Modified
     1 #170-32 Needle Valve f/Receiver Outlet, 1/8" NPT
     1 #171-11 O-Ring for Receiver

     1 #171-12 Receiver Body
     1 #171-22 Retainer Pin
     1 #171-90-10 Valve Stem f/Receiver Entry (Both), 1/8" NPT
     1 #171-90-11 Elbow, 1/8" FNPT, 316 SS
     1 #171-90-14 Hose Barb, 1/8" NPT x 1/4"
#171-97 Valve for Cell Outlet, 1/8"
O-Rings:
12 #170-13-2 O-Ring for Cell
8 #170-17 O-Ring for #170-16 Valve Stem
4 #170-77 O-Ring for SS Spacer
1 #171-11 O-Ring for Back Pressure Receiver
4 #171-99 O-Ring for Piston
Valves:
2 #170-16 Valve Stem for Cell
2 #170-32 Needle Valve f/Reg/Receiver Outlet, 1/8" NPT
1 #171-90-08 Valve Stem f/PPT Cell Hydraulics Entry
1 #171-90-09 Valve Stem f/PPT Cell Filtrate Outlet
2 #171-90-10 Valve Stem f/Receiver Entry (Both), 1/8" NPT
1 #171-92-1 Safety Relief Valve, Inlet Manifold, 4000 psi
1 #171-97 Valve for Cell Outlet, 1/8"
1 #171-98 Ball Valve, 1/4", Inlet Pressure Line

Optional:

#171-84-SP One Year’s Spare Parts for 171-84-01