PSI / Pikotek

Link-Seal® Modular Seals
Link-Seal® modular seals are considered to be the premier method for permanently sealing pipes of any size passing through walls, floors and ceilings. In fact, any cylindrical object may be quickly, easily and permanently sealed, as they pass through barriers, by the patented Link-Seal® modular seal design.
Ductile iron, concrete, metal as well as plastic pipes may be hydrostatically sealed within walls to hold up to 20 psig (40 feet of static head). Electrical or telecommunications cable may be sealed within conduit as they enter vaults or manholes. The annular space between carrier pipes passing through casings may be sealed against the entry of water, soil or backfill material.
With a wide variety of hardware/elastomer combinations, Link-Seal modular seals are easily configured to achieve the best possible match for service conditions encountered. High temperature seals, fire seals (Factory Mutual Approved) and oil resistant seals may be ordered to meet special or unique service applications. For the system approach, metal or non-conductive Century-Line® sleeves with water stops may be ordered with Link-Seal modular seals to ensure correct positioning and a water tight seal of the installation within poured concrete walls.
Link-Seal modular seals are also available for a wide variety of special applications, temperature extremes and exotic chemical combinations.

Saves time and money...
Link-Seal modular seals install in up to 75% less time compared to lead-oakum joints, hand fitted flashings, mastics or casing boots.
Positive hydrostatic seal...
Link-Seal modular seals are rated at 20 psig (40 feet of head), which exceeds the performance requirements of most applications.
Long seal life...
Link-Seal modular seals are designed for use as a permanent seal. Seal elements are specially compounded to resist aging and attack from ozone, sunlight, water and a wide range of chemicals.
Maximum protection against corrosion...
Standard fasteners have a two-part zinc dichromate and proprietary corrosion inhibiting coating. Corrosion resistant 316 stainless steel available for maximum corrosion protection.
Factory Mutual Fire Approvals.
Also a wide variety of approvals from various Federal agencies, associations, code groups, laboratories and organizations.
ISO Quality Assurance...
Link-Seal modular seals are manufactured in an ISO 9001:2000 certified facility.
Configure a Link-Seal modular seal to match your application...
16 sizes, color coded EPDM, Nitrile, & Silicone elastomers may be used with various hardware options to match performance characteristics with service conditions.

Century-Line® Sleeves
Century-Line® Pipe Penetration Sleeves are used to create circular sleeved holes in concrete poured barriers including; walls, floors, ceilings, structural supports and tank footings. Molded from non-conductive, high impact resistant HDPE, Century-Line® sleeves are lightweight and easily installed by one construction worker. They are available in 16 diameters ranging from 2" to 25" and shipped, from stock, in any desired length.
Century-line® sleeves are engineered to mate with Link-Seal® modular mechanical seals for a lifetime of leak-proof performance. PSI/Thunderline?Link-Seal® is your one-stop source for everything you need to effectively seal the annular space between pipes and concrete barriers through which they pass.

16 sizes - 2" to 25" in diameter - Local stock, drop ship overnight...
In the event of a field or engineering change, sleeves may be cut shorter at the job site using ordinary hand tools. Standard sleeves are 16" (406mm) in length. Longer length models may also be quickly fabricated as a custom ordered item.
1/8 the weight of steel...
Century-Line® sleeves are light enough for one worker to install without a crane, hoist or helper which reduces installation time and costs. Century-Line® sleeves are easy to stock and store and far less expensive to ship, when compared to steel sleeves.
Resists water migration...
The 2” (50.8mm) water stop collar not only anchors the sleeve in position but creates a long tortuous path against the migration of water around the outside of the sleeve.
Used for shotcrete wall applications...
For shotcrete applications, Century-Line® Sleeves are easily positioned to wall form with threaded rod, and the end caps protect the sleeve penetration while the wall is formed.Z
Adjusts to wall thickness...
Century-Line® sleeves unique hollow water stop collar acts like an expansion joint, adjusting (up to 1/2” - 12.7mm) to the thickness of the wall. This compressive force reacts against the forms like a spring, creating a prevailing tension which maintains proper sleeve location within the form.
Nailer end caps position sleeve precisely in form...
Specially designed end caps provide an ideal method for attaching Century-Line sleeves to the concrete forms. The end caps assure that the sleeve holds its circular configuration during the pour. In addition to keeping out wet concrete, they also prevent dirt from entering the sleeve during backfill operations or the interim construction period.
Tough high density polyethylene (HDPE) construction...
High impact-resistant HDPE also provides excellent resistance to acids, alkalis and other organic solvents. Ideal for cathodic protection systems, these non-conductive sleeves will neither rust, corrode or degrade. Low-temperature properties are such that they may be installed under any weather conditions suitable for pouring concrete. High termperature application limit is 150º F. (66º C.). The sleeve is molded with a texture on the outside surface to assure a better bond, than most other plastics, to concrete interfaces.

PSI / Pikotek Model "C" Coated Metallic Casing Spacers
An extremely tough and durable heat fused fluid bed thermo set cross-linked polymer coating is offered on steel casing spacers/isolators 4" and larger, with 8" and 12" band widths. The cold formed steel casing spacer/isolator band (risers where applicable) and studs for runner mounting
are grit blasted, heated and fusion coated with a cross-linked epoxy polymer formulation, providing a minimum 0.010 (0.254mm) thick coating over the entire metallic surface. A post cured cycle strengthens the bond and provides an even more uniform coating.
Other heat fused formulations are also available for custom orders and applications.
The runners are attached with 3/8" diameter studs, which are fusion welded to the band before it is powder coated. They are recessed far below the wearing surface of the runner. After the runner is anchored to the band, the stud counter-bore is filled with specially formulated caulk to assure a water tight seal for the stud and the locking fastener.

Targeted Use - Energy, Water and Filled Casings
For carrier pipe diameters ranging from 4" (101.6mm) to 120" (304.8cm).
For carrier pipe insertion lengths up to 5,000 feet* (1,524M)
Spacing Recommendations: Max 8' (243.8cm) between spacers
Max 2' (61.0cm) from casing pipe end
Max 2' (61.0cm) on each side of bell or mechanical joint.
Recommended End Seals: Model C, S, W, R and FW.
*Pipe insertion lengths may vary depending on type of casing pipe, condition of casing pipe or other factors that may cause excessive abrasion to runner materials.

  • Low Labor Costs - May Be Installed By One Person
  • Glass Reinforced Nylon or Polyester Runners Offer Low Coefficient of Friction = 0.1 to 0.6
  • Glass Reinforced Nylon or Polyester Runners Offer 18,000 PSI (1,265kg/cm²) Compressive Strength
  • Riser Height May Be Specified For Specific Positioning of Carrier Pipe Within Casing
  • Heavy Duty PVC Inner Liner Provides Protection For Pipe and/or Coating
  • Offers excellent corrosion resistance
  • May be used for long pulls and/or heavy pipe installations
  • Designed to last for the life of the piping system
  • PVC Liner Provides Back-up Isolation
  • Deeply Embossed Flanges Offer Added Strength During Tightening of Flange Bolts
  • Eliminates the Need for Blown Sand or Pea Gravel
  • Available with 8" or 12" bands
  • 10 or 7 gauge risers may be ordered

PSI / Pikotek RangerII® Non-Metallic Casing Spacers
The Ranger II® is an all non-metallic casing isolator/spacer system that uses molded segments to encircle the carrier pipe. Each segment includes at least one molded-in runner and one slide lock. Customer's may choose from any one of five different size bands to allow correct sizing for carrier pipe O.D. ranges from 0.83" up to 37.60" in diameter.
Once sized, the segments are placed around the carrier pipe and cinched together via non-metallic slide locks. Installation is quick and easy while only a small inventory of segments may be used to accommodate a large variety of pipe styles, types and diameters.

Targeted Use - Water
For carrier pipe diameters ranging from 4" (101.6mm) to 120" (304.8cm)
For carrier pipe insertion lengths up to 5,000 feet* (1,524M)
Spacing Recommendation:
Max 8' (243.8cm) between spacers
Max 2' (61.0cm) from casing pipe end
Max 2' (61.2cm) on each side of bell or mechanical joint.
Recommended End Seals: Model C, S, W, R and FW.
*= Pipe insertion lengths may vary depending on type of casing pipe, condition of casing pipe, misaligned casing hoint or other factors that may cause excessive abrasion to runner materials.

  • All non-metallic. No nuts, bolts, washers or any other metal parts to corrode or degrade over time.
  • Designed for carrier pipe diameters from 0.83 (21mm) to 37.60 (955mm) in diameter.
  • Segmented pieces - small inventory may be used to accommodate a large variety of pipe styles, types and diameters. No extra trips from job site to warehouse for additional parts.
  • Easy assembly. Simply slide the segments together and ratchet tight with patented Slide-Lock connecting system.
  • Wide variety of runner heights to allow numerous options for pipe positioning within the casing.
  • Runner variations may be used to adjust for grade.
  • Manufactured from UV resistant polypropylene.
  • High impact strength, 1.5 ft. lbs./inch (0.8 joules/cm).
  • Excellent compressive strength, 3,000 psi (211 kg/square cm.).
  • 800 volts/mil. dielectric strength.
  • Wide temperature range;
  • Eliminates sand or grout fill.
  • No special tools required for installation.
  • Low coefficient of friction for ease of installation.
  • Will accommodate small conduit attachment for communications or electrical cable.

PSI / Pikotek Riser-Wrap® Sealing System
The Riser-Wrap seal is a two-layer system designed for corrosion and sealing protection on pipelines and encapsulating manholes to seal joints against ground water infiltration. The first layer is a visco-elastic adhesive liquid sealant covered by a heat shrink sleeve. The heat shrink is a thick-walled .098” (2.5mm),cross-linked, high density polyethylene membrane.


  • Manhole Encapsulation/Sealing
  • Pipelines
  • Repair and Rehabilitation
  • Step-Down Joints
  • Square/Rectangular Vaults
  • Septic Tanks/Vaults

Low Preheat Requirements
Preheat required only to remove the moisture from the surface and for fast/easy installation.
Offers Permanent Heat Change Indicators
Permanent Heat Indicator ensures that the correct application of heat has been applied to the entire heat shrink sleeve.
Installation is fully inspectable at any time after the installation.
High Modulus of Elasticity Backing
Accommodates ground movement.
High Impact and Penetration Resistance
Toughness to resist soil stress.
High Shrink Force
Optimizes flow and fill of visco-elastic adhesive sealant.
Seals against ground water infiltration. Impermeable
Provides corrosion protection.
Extends structure life.
No Special Tools
Quick & easy installation.
Sizing Calculation Program
On-line at

Plidco Leak Enclosure Fittings for Pipeline Repair


Rugged, reliable PLIDCO® Split+Sleeves are widely used for making permanent repairs to pipelines onshore and offshore. They are used for repairs to both high and low pressure and temperature pipelines carrying oil, gas, steam, chemical process and water. Their unique construction permits making the repairs while the line continues on-stream.
PLIDCO® Split+Sleeves are designed for faster, easier installation. Patented steel GirderRings hold factory-installed packings firmly in place to prevent their displacement by leaking fluids during installation. Once the PLIDCO® Split+Sleeve is bolted in place, the seal is complete. It may be completely seal-welded with pipeline in operation. All PLIDCO® Split+Sleeves are designed so they can be seal welded unless otherwise specified.
The PLIDCO® Split+Sleeve can be used to couple pipe if sufficient end restraint is provided such as with a PLIDCO® Clamp+Ring. The PLIDCO® Split+Sleeve has no end restraint rating in its unwelded condition. Standard working pressure is 1000 psig. Fittings are tested to 1-1/2 times recommended working pressure. Available from stock in API pipe sizes 1-1/2” through 48”. Higher working pressures, longer lengths and other sizes available on request. Buna-N packing is standard, other packing materials available.

Locates and stops pit-hole leaks
The lightweight, easily handled PLIDCO® Smith+Clamp is designed to shut off high pressure leaks. Its exclusive pilot pin makes it possible to locate pit-hole leaks in piping, even if they can’t be seen. So simple and sensible is the PLIDCO® Smith+Clamp design that it can be installed by a blindfolded person…certainly in darkness or on a pipeline submersed in water or oil.
The pilot pin guides the cone point into the pit-hole. Pressure is then applied behind cone by a force screw – not by drawing bolts on opposite side of the pipe. The drawbolt at the bottom of the fitting only holds the clamp in place. Exerting pressure directly on the cone eliminates danger of caving in badly corroded pipe. Line pressure need not be reduced during installation. Available in sizes 1-1/2” through 48”. Special sizes on application.
Requires much lower bolting pressure
Since the point of the PLIDCO® Smith+Clamp cone is centered exactly on the leak, a minimum of force is required to shut-off the leak. For example, a 1/8” diameter hole is 0.012 square inches in area. At a pipeline pressure of 1000 psig only 12 pounds of force is needed to push the cone into the leak.

In this example, the pipe wall is roughly corroded over an area of 3 square inches surrounding the hole. This is by no means an unusual condition but it is very difficult for the ordinary clamp because it will require over 3000 pounds of force to shut off this same leak.
A. Pilot pin (1/16” dia. stainless steel wire) goes down through center of force screw and cone, locates hole, guides cone point (D) to trouble spot.
B. Steel packing force-screw. Turned with wrench, it forces point of cone into leaking hole. Additional wrenching pressure flattens cone into flat disc shape.
C. Thrust washer. Permits force-screw (B) to turn without rotating cone.
D. Pointed cone serves as leak packing. Standard cone is Buna-N. Other packings available on application.
*Pressure rating up to 2000 psig working pressure, depending upon leak area and temperature.

Stops leaks in flange gaskets, on-stream.
PLIDCO® Flange+RepairRings can be installed by your own personnel. There is no drilling or altering of flanges. On a scheduled turnaround, they can be removed, flanges cleaned, the gasket replaced and the flanges put back in service. The PLIDCO® Flange+RepairRing can be reconditioned and used again. Give us your conditions–pressure, temperature, fluid–and we will recommend the proper sealant and packing. Standard packing is non-asbestos aramid fiber. PLIDCO® Flange+RepairRings incorporate patented steel GirderRings to hold packing in place during installation. Available from stock in standard flange sizes 1/2” through 12”, 150 lb. ANSI thru 600 lb. ANSI. Larger or special sizes, higher temperature and pressure ratings available on application.

Plidco Connector Fittings for Pipeline Repair

Joins pipe without special preparation of pipe ends.
PLIDCO® Weld+Ends, a safety welding coupling for crude oil, gasoline, gas, asphalt, steam, chemical process and other pipelines, joins pipe so that flow can be resumed
immediately at pressures shown in table below. No special preparation of pipe ends is required. Just cut the pipe and slide the PLIDCO® Weld+Ends coupling on. With clamping and thrust screws fully tightened, pipe is joined and leakproof seals are completed. PLIDCO® Weld+Ends coupling can be left with screws tightened or they can be welded. The safest condition for welding on a pipeline is with the line in operation. If welding is specified, it can be delayed for several weeks until conditions are safe–with pipeline in operation.
If welding is specified, pipeline is put in operation. Refer to the chart below for recommended pressures. Thrust screws are cut/burned off flush. End of coupling is fillet-welded around circumference, including seal-welding of thrust screws. Clamping screws are cut/burned off and seal-welded. Standard PLIDCO® Weld+Ends couplings have a single row of clamping screws at each end. Where excessive end-pulling loads are involved and it is not feasible to weld, additional rows of clamping screws can be provided or the PLIDCO® Clamp+Ring may be used. Available in standard sizes from 1-1/2” through 48”. Special sizes, diameters, pressures and lengths, on application. Buna-N packing is standard. Other packing available. Standard body materials: 1-1/2” thru 2-1/2”, seamless mechanical tubing; 3” and up, A-106 seamless pipe, A-105 forging, A-285, A-516, steel plate or equivalent.

Mates up with standard flanges
Useful for hundreds of applications, PLIDCO®+Flanges are particularly valuable for making tie-in connections for prefabricated expansion and rework projects. PLIDCO®+Flanges are easy to install. There are no problems installing them in hard to get at locations such as high overhead piping, conduits and tunnels, tight manifolds or in hazardous locations. No special preparation of pipe ends is necessary. Simply cut the pipe and slide the PLIDCO®+Flange onto the pipe until the end of the pipe is within approximately 1 inch of the flange face. After the connecting mating pipe with flange is brought into place, rotate PLIDCO®+Flange, and/or mating pipe, until flange bolt holes on the two flanges line up. Several flange bolts may be inserted to assist with the alignment. Advance the clamp screws in order to center the PLIDCO®+Flange on the pipe. Tighten flange bolts to their specified torque. Tighten all clamping screws per installation instructions. Tightening end thrust screws (A) causes steel thrust ring (B) to move forward and squeeze packing ring (C) against the pipe. This assures a pressure-tight seal. Installation is complete unless welding is specified. Before repressuring line, note allowable working pressure, prior to welding, in table below. If welding is specified, pipeline is put in operation. Refer to the chart below for recommended pressures. Thrust screws are cut/burned off flush. End of coupling is fillet-welded around circumference, including seal-welding of thrust screws. Clamping screws are cut/burned off and seal-welded. Welders should be qualified in accordance with the requirements of API Standard RP 1107, Latest Edition.

Mack Iron Works Strainers

Perforated Conical Strainers (Series PC - RF/FF)
Perforated Conical (PC) strainers represent a substantial performance improvement over flat style strainers. There is more open area so conical strainers clog more slowly and offer lower pressure drop losses than flat strainers. PC strainers require an accessible section of pipe, such as a removable spool piece. Conical strainers are effective for startup applications, as well as most service requiring infrequent cleanout.

Perforated Basket Strainers (Series PB - RF/FF)
Perforated Basket (PB) or truncated cone strainers are an alternative to the conical strainer. PB strainer performance is comparable to the PC strainer with the advantage of larger internal volume for retained solids; this results in lower pressure drops over time and subsequently longer allowable time between cleanouts. PB strainers contain more open area than an equivalent length cone strainer.

Wire Basket Strainers (Series WB - FR/FF)
Wire Basket (WB) strainers, fabricated entirely of wire mesh, can offer significantly lower pressure drop losses than similar strainers of perforated plate. The specifier must, however, be very cautious in specifying wire mesh baskets due to their construction limitations. Inherent construction features severely limit the allowable differential pressure these strainers can withstand. These strainers are recommended only for light duty service.

Tank Suction Strainers (Series TS)
Tank Suction (TS) strainers are designed to provide a minimum open area of 200%. They feature a smooth concentric reducer and anti-vortexing vanes/stiffeners to maximize flow efficiency. While they can be furnished with a flanged connection, they are typically welded to the end of a pipe and suspended in a tank or reservoir. Their primary purpose is to protect pumps from potentially damaging particles.

Flat Perforated Strainers (Series FP/FFP)
Flat Perforated (FP) and Flat Face Perforated (FFP) strainers are the simplest to fabricate and consequently, are the least expensive of all strainers. The penalty, however, is that they clog rapidly and have relatively high pressure drop losses, due to an open area less than 50% of the pipe flow area. Flat strainers should only be used where: 1) Lowest initial cost is mandatory, or 2) where the piping can only be separated enough to insert this type of strainer.

Mack Iron Works Bleed Rings

Bleed Ring
A ring section with one or more radial piping connections. These are designed to fit between standard flanges, using conventional gasketing materials. They provide a convenient method of draining piping, taking samples, or attaching instrumentation.

Mack Iron Works Orifice Plates

Orifice Plates
Microfinished orifice plates are furnished with 100-125 AARH standard finish and your required bore.
Mack Iron tolerances on bore diameters:
Bore £ 1/2" -.005"; +.010"
Bore > 1/2" ± .005"

136 Green Tree Road, Suite 110, Phoenixville, PA 19460
Telephone: 610-935-9500, Facsimile: 610-935-9517,