EST
EST Group, a Curtiss-Wright company based in Hatfield, Pennsylvania (with offices in the Netherlands and Singapore), has specialized since 1968 in engineered products and field services for shell-and-tube heat exchangers, condensers, coolers and pressure vessels.
4 product lines available through ACTS
View in galleryPop-A-Plug CPI / Perma tube plugs
View in galleryPop-A-Plug P2 high-pressure tube plugs
View in galleryPop-A-Plug tube stabilizers
View in galleryPop-A-Plug hydraulic ram package
View in gallerySmart Ram Plus installation system
View in gallerySmart Ram 640T installation tool
View in galleryManual installation tool
View in galleryPop-A-Plug removal tool
View in galleryAir-cooled heat exchanger plugging
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View in galleryGripTight MAX test plug
View in galleryGripTight PE test plug
View in galleryGripTight elbow test plug
View in galleryOD GripTight test plug
View in galleryHigh Lift flange weld test plug
View in gallerySocket Weld SQS test plug
View in galleryGripTight reverse-pressure test plug
View in galleryGripTight pipe isolation plug
View in galleryDouble block & bleed isolation plug
Scroll to see all 9 →
The weld-free tube repair
High-pressure mechanical tube plug — scroll to walk around it.
Permanent weld-free seal, rated 7,000 PsiG (483 BarG).
Metallurgy-matched to the tube — resists ejection and thermal cycling.
Fits tube IDs 0.400"–1.460" — helium leak-tight, ISO 9001 manufactured.
From the channel side, the P2 docks into the leaking tube and its rings swage against the tube wall — a helium leak-tight seal in minutes, no welding, and the exchanger goes back online.
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Explore the full EST range
Open any product for its overview, key features, engineering benefits, technical specifications, certifications and every matching brochure, catalog and manual — grouped in one place.
A hydraulically installed mechanical tube plug that seals leaking heat exchanger and condenser tubes with a helium-leak-tight metal-to-metal seal — no welding or explosives.
- Metal-to-metal helium-tight seal
- No welding or explosives
- ASME PCC-2 recommended method
- Installs in seconds with a Pop-A-Plug ram
A high-pressure mechanical tube plug giving a permanent, weld-free seal for leaking heat exchanger tubes; a metallurgy-matched ring-and-pin design resists ejection and thermal-cycling leaks.
- Metallurgy-matched ring-and-pin design
- Helium leak-tight, no welding
- Resists ejection & thermal-cycling leaks
- ISO 9001 manufactured
Hydra-Loc® hydraulically expands a sleeve into intimate contact with a corroded or eroded tube end and locks it in place, recovering tube service without full retubing.
- Faster than roller expansion
- Conforms to actual tube contours
- Tightly controlled expansion pressure
- Repairs inlet-end tube damage
Battery-operated Pop-A-Plug installation tools with a self-contained hydraulic unit and LCD. Smart Ram Plus records and monitors every installation through a rugged tablet for full documentation and quality assurance.
- Cordless field operation
- Up to 1,000 plugs per charge
- Real-time installation monitoring (Plus)
- Rugged tablet interface (Plus)
Hydraulic ram packages that install Pop-A-Plug tube plugs quickly and safely, in standard and close-quarters configurations, covering the CPI/Perma and P2 plug ranges with no welding.
- Hydraulic, controlled installation
- Standard & close-quarters models
- Covers CPI/Perma & P2 ranges
- No welding required
A reliable manual installation tool for Pop-A-Plug tube plugs where air or electricity is unavailable; a locating pin acts as a reaction arm during tightening.
- No air or electricity needed
- Accepts all MIT pull rods
- Zinc-plated carbon steel
A dual-function removal tool: a nose piece threads into the plug pin while a serrated spear grabs the ring, and an integral slide hammer pulls both out in one operation.
- Removes CPI/Perma & P2 plugs
- Integral slide hammer
- Extensions available to 6 ft
Extended-reach Pop-A-Plug tooling engineered to test and plug air-cooled heat exchanger (Fin-Fan®) tubes at depth through the narrow plug-sheet entry, without welding.
- ASME PCC-2 compliant
- Installs in under 15 seconds
- Reaches at depth in header boxes
- No hammering or welding
Pop-A-Plug tooling and vibra-proof plugs for changing out failed condenser tube plugs, restoring vacuum-tight sealing and thermal efficiency in power-plant condensers.
- Vibra-proof condenser plug design
- Weld-free change-out
- Restores condenser vacuum
A high-pressure test plug with a patented dual-serrated gripper and hardened shaft, grippers and cone — effective for hardened and high-alloy pipe up to HRC 32, reusable for hydrostatic or pneumatic testing.
- Patented dual-serrated gripper
- Hardened shaft, grippers & cone
- Hardened pipe up to HRC 32
- Hydrostatic or pneumatic testing
An orientation-free test plug for long-radius elbows, using patented dual-serrated GripTight MAX grippers and a self-aligning gripper and seal for pipe spools ending in elbows.
- Orientation-independent install
- Self-aligning gripper & seal
- Fits most long-radius elbows
A slip-in test plug for polyethylene (LDPE/MDPE/HDPE) pipe that hand-tightens and uses test pressure to energize the seal and gripper for a fast, safe, leak-tight seal.
- Hand-tighten, pressure-energized seal
- Tests pipe on reels or in trench
- Aluminum / steel construction
A 4-in-1 tool that acts as a purge dam, weld fixture, test plug and weld-isolation plug — letting you monitor upstream, purge, weld and hydro-test a flange joint with one tool.
- Purge dam + weld fixture + test + isolation
- Ported shaft for upstream monitoring
- Isolates only the weld area
Seals on the pipe outside diameter to test open or plain-end pipe and tube; a patented self-gripping, self-sealing dual-seal design gives fast, safe hydrotesting.
- Seals on the pipe OD
- Self-gripping, self-sealing dual seal
- One plug fits a range of schedules
A twin-cone test plug that seals 3,000 lb socket-weld fittings and couplings, eliminating the need to weld in pipe stubs, pups or end caps for pressure testing.
- Twin-cone uniform gripper expansion
- Replaceable grippers & seals
- No pipe stubs or end caps needed
Subjects a flange-to-pipe weld to full radial, hoop and axial stresses during hydrostatic testing — equivalent to blinding and pressurizing the entire piping system.
- ASME PCC-2 Type I device
- Full radial, hoop & axial weld stress
- Optional plug-movement indicator
A double block-and-bleed isolation and test plug that isolates and monitors potentially explosive vapors during hot work using minimal water, testable with a simple hand pump.
- ASME PCC-2 Type IV device
- Positive-pressure barrier between two seals
- Monitors vapors during hot work
- Multi-schedule, minimal-media testing
Bolt-type medium-pressure and economy low-pressure test plugs for straightforward pressure testing of open-end pipe where the highest pressures aren't required.
- Bolt-type medium-pressure design
- Economy low-pressure design
- Simple, cost-effective testing
Lightweight G-Series tools quickly seal and evacuate individual heat exchanger tubes or tube-to-tubesheet joints to locate pinhole leaks — a loss of vacuum indicates a leaking tube or joint.
- G-160 tube testing tool
- G-250 vacuum tube tester
- G-650 vacuum joint tester
- Lightweight, uses plant air
A complete line of compact, lightweight D-Series tools for tapping into existing pipelines under pressure, enabling connections without shutting down the line.
- Taps live pipelines under pressure
- Compact & lightweight
- Small and standard D-Series models
A lifting arm and fixtures for safe rigging, handling and installation of large, heavy GripTight test plugs, including sizes from 26" to 48".
- Safe handling of large test plugs
- Fixtures for 26" to 48" plugs
- Reduces manual-handling risk
0 real EST products, supplied by ACTS
Tap a photo to flip it and see valve details.
Heat Exchanger Tube Plugging
0Rod- or cable-style stabilizer that anchors weakened or fractured heat exchanger tubes, preventing migration until retubing or sleeving can be performed.
Tube & Joint Leak Testing
0Test & Isolation Plugs
0Dual-port isolation plug that creates a positive-pressure barrier between two seals, safely isolating hot work from residual upstream gases while monitoring for explosive vapors.
Field services & global support
Beyond the tools, EST Group delivers on-site engineered services and a global network that keep heat exchangers, condensers and pipework running.
Field Services
A full range of on-site services for tubular heat exchangers, condensers and oil coolers — plugging, pulling, sleeving and testing.
Request field service
Testing & Inspection
Tube, pipe and pressure-vessel testing and inspection, including hydrostatic testing applications and integrity verification.
Talk to ACTS
Tube Sleeving, Plugging & Pulling
Engineered tube repair — Hydra-Loc® sleeving, Pop-A-Plug® plugging and controlled tube pulling to extend asset life.
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Complete Tooling Packages
Turnkey tooling packages that bundle the plugs, rams and accessories needed for a full turnaround scope.
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On-Site Training
Hands-on operator training so your crews can install, test and maintain EST equipment safely and repeatably.
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Global Presence
Headquartered in Hatfield, PA with offices in the Netherlands and Singapore and a worldwide representative network.
Learn more183 EST engineering documents
Every brochure, catalog, bulletin, manual, technical procedure and certification — searchable and filterable by product and type. View or download instantly.
G-250-Vacuum Tube Testers
Product literature, technical brief or application sheet.
GripTight Elbow Test Plug
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Product Catalog
Product literature, technical brief or application sheet.
Heat Exchanger Product Line Guide
Product literature, technical brief or application sheet.
Heat Exchanger Equipment Product Line Guide
Product literature, technical brief or application sheet.
Heat Exchanger Product Line Guide
Product literature, technical brief or application sheet.
Heat Exchanger Product Line Guide
Product literature, technical brief or application sheet.
Heat Exchanger Product Line Guide
Product literature, technical brief or application sheet.
Heat Exchanger Product Line Guide
Product literature, technical brief or application sheet.
Heat Exchanger Product Line Guide
Product literature, technical brief or application sheet.
Pop-A-Plug CPI Perma Plug Literature
Product literature, technical brief or application sheet.
Pop-A-Plug CPI Perma Tube Plug Tech Brief
Product literature, technical brief or application sheet.
Pop-A-Plug P2-Literature
Product literature, technical brief or application sheet.
Pop-A-Plug P2-Technical Brief
Product literature, technical brief or application sheet.
Tube Stabilizer Literature
Product literature, technical brief or application sheet.
G-650-Vacuum Joint Tester Literature
Product literature, technical brief or application sheet.
Ram Package Literature
Product literature, technical brief or application sheet.
Literature Manual Tool Pop-A-Plug
Product literature, technical brief or application sheet.
Hydra-Loc Tube Sleeves Literature
Product literature, technical brief or application sheet.
Hydra-Loc Tube Sleeving Technical Brief
Product literature, technical brief or application sheet.
Pop-A-Plug ACHE Tech Brief
Product literature, technical brief or application sheet.
Smart Ram Literature
Product literature, technical brief or application sheet.
Smart Ram Literature
Product literature, technical brief or application sheet.
Condenser Plug Change Out Application Sheet
Product literature, technical brief or application sheet.
Condenser Plug Change Out Application Sheet
Product literature, technical brief or application sheet.
Condenser Plug Change Out Application Sheet
Product literature, technical brief or application sheet.
Fertilizer Market Application Sheet
Product literature, technical brief or application sheet.
Pipe Jumper Hose System Literature
Product literature, technical brief or application sheet.
Pop-A-Plug Fertilizer Market Literature
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
Test and Isolation Product Line Guide
Product literature, technical brief or application sheet.
GripTight MAX Literature
Product literature, technical brief or application sheet.
GripTight PE Test Plug Literature
Product literature, technical brief or application sheet.
GripTight MAX Test Plug Literature
Product literature, technical brief or application sheet.
Plug Removal Tool Literature
Product literature, technical brief or application sheet.
OD GripTight Literature
Product literature, technical brief or application sheet.
Socket Weld SQS Test Plug Literature
Product literature, technical brief or application sheet.
High Lift Flange Weld Tech Brief
Product literature, technical brief or application sheet.
GripTight Test Plug Tech Brief
Product literature, technical brief or application sheet.
Economy Test Plug Literature
Product literature, technical brief or application sheet.
GripTight Reverse Pressure Tech Brief
Product literature, technical brief or application sheet.
GripTight Isolation Plug Tech Brief
Product literature, technical brief or application sheet.
Double Block and Bleed Plug Tech Brief
Product literature, technical brief or application sheet.
Double Block and Bleed Plug Literature
Product literature, technical brief or application sheet.
Hydrostatic Testing (EPC) Application Sheet
Product literature, technical brief or application sheet.
Flange Weld Test and Isolation Application Sheet
Product literature, technical brief or application sheet.
Test Plug Lifting Arm Literature
Product literature, technical brief or application sheet.
D-Series Hot Tapping Tools
Product literature, technical brief or application sheet.
G-160-Tube Testing Tool Literature
Product literature, technical brief or application sheet.
G-160-Tube Testing Tool Literature
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
EST Group Corporate Capabilities Brochure
Product literature, technical brief or application sheet.
Bolt Type Med Pressure Test Plug Literature
Product literature, technical brief or application sheet.
Cost Savings Test Plugs vs Welded End Caps
Product literature, technical brief or application sheet.
Test Plugs for EPC Brochure -12-pgs
Product literature, technical brief or application sheet.
Test Plugs for EPC Brochure -12-pgs
Product literature, technical brief or application sheet.
Test Plugs for EPC Brochure
Product literature, technical brief or application sheet.
PAP vs Tapered Plugs
Product literature, technical brief or application sheet.
PAP vs Tapered Plugs
Product literature, technical brief or application sheet.
PAP vs Tapered Plugs
Product literature, technical brief or application sheet.
PAP vs Tapered Plugs
Product literature, technical brief or application sheet.
PAP vs Tapered Plugs
Product literature, technical brief or application sheet.
Smart Ram ACHE Literature
Product literature, technical brief or application sheet.
One Rev Tube Cutter (ORTC)
Product literature, technical brief or application sheet.
Smart Ram ACHE Adapter Literature
Product literature, technical brief or application sheet.
DBB Lightweight Sheet
Product literature, technical brief or application sheet.
GripTight Reverse Pressure Literature
Product literature, technical brief or application sheet.
Smart Ram Plus FAQ Sheet
Product literature, technical brief or application sheet.
Curtiss Wright EST Group ISO-9001-2015
Certification or third-party examination report.
Double Block and Bleed TUV Rheinland Examination Report
Certification or third-party examination report.
GripTight MAX TUV Rheinland Examination Report
Certification or third-party examination report.
Pop-A-Plug TA LUFT Certificate
Certification or third-party examination report.
Pop-A-Plug TUV Suitability Verification Certificate
Certification or third-party examination report.
Installation Procedures Tube Stabilizer
Operating, installation or technical specification document.
Installation Procedure Pop-A-Plug CPI Perma Near End
Operating, installation or technical specification document.
Procedimiento Para La Instalacion De Pop-A-Plug® CPI Perma™ En La Placa Tubular Cercana (instalacion estandar)
Operating, installation or technical specification document.
Titanium Size Ranges CPI Perma
Operating, installation or technical specification document.
Smart Ram ACHE Adapter Operating Procedures
Operating, installation or technical specification document.
Curtiss Wright Smart Ram Plus App Operating Procedures
Operating, installation or technical specification document.
Operating Procedures G150-Test Guns
Operating, installation or technical specification document.
Operating Procedures G160-Test Tools
Operating, installation or technical specification document.
Operating Procedures G450-Test Gun
Operating, installation or technical specification document.
Operating Procedures G650-Test Gun
Operating, installation or technical specification document.
Operating Procedures G250
Operating, installation or technical specification document.
Installation Instruction for Safety Gags Pipe Restraints
Operating, installation or technical specification document.
GTMAX Technical Specifications
Operating, installation or technical specification document.
Operating Procedures ⅜in through-10P120-GripTight MAX High Pressure Test Plug
Operating, installation or technical specification document.
Operating Procedures for GripTight High Pressure Test Plug
Operating, installation or technical specification document.
Seal and Gripper Replacement Procedures GripTight Test Plug
Operating, installation or technical specification document.
GripTight PE Test Plugs Sizes & Specs
Operating, installation or technical specification document.
Operating Procedure OD GripTight
Operating, installation or technical specification document.
Technical Data Sheet PE GripTight
Operating, installation or technical specification document.
Operating Procedures PE GripTight
Operating, installation or technical specification document.
Operating Procedures PE GripTight-15-5-SDR
Operating, installation or technical specification document.
Operating Procedures-10in through-24in GripTight High Pressure Test Plug
Operating, installation or technical specification document.
Technical Specifications Large GripTight Test Plug
Operating, installation or technical specification document.
Operating Procedures PE-17-SDR GripTight
Operating, installation or technical specification document.
Operating Procedures GT Reverse Pressure-1-½in-6in
Operating, installation or technical specification document.
GTRP Technical Specification
Operating, installation or technical specification document.
Operating Procedures GripTight Reverse Pressure-8in-12in
Operating, installation or technical specification document.
GripTight Installation Checklist
Operating, installation or technical specification document.
Operating Procedures GT Reverse Pressure-75in-1in
Operating, installation or technical specification document.
Operating Procedures-2in SCH-160-through-5-in SCH-80-GripTight Long Radius Elbow Test Plug
Operating, installation or technical specification document.
GTLBO Technical Specifications
Operating, installation or technical specification document.
⅜in through-24in GripTight MAX Seal and Gripper Replacement
Operating, installation or technical specification document.
Operating Procedures-5in through-24in GripTight Elbow High Pressure Test Plug
Operating, installation or technical specification document.
Operating Procedures-10in through-24in GripTight MAX High Pressure Test Plug
Operating, installation or technical specification document.
Operating Procedures-26in through-48in GripTight MAX High Pressure Test Plug
Operating, installation or technical specification document.
Maintenance Procedures GripTight Test Plug
Operating, installation or technical specification document.
TP LIFT-1024-Operating Procedures
Operating, installation or technical specification document.
Operating Procedures for Test Plug Lifting Fixture (26-to-48)
Operating, installation or technical specification document.
Operating Procedures Bolt Type Test Plug
Operating, installation or technical specification document.
Operating Procedures Economy Test Plug
Operating, installation or technical specification document.
Operating Procedures High Lift Flange Weld Test Plug-8inch and Smaller
Operating, installation or technical specification document.
Operating Procedures Vibra Proof Condenser Plug
Operating, installation or technical specification document.
Operating Procedures Double Block and Bleed Isolation Plug
Operating, installation or technical specification document.
Smart Ram SR0640T Operating Procedures
Operating, installation or technical specification document.
Technical Specifications Double Block and Bleed Isolation Plug
Operating, installation or technical specification document.
Operating Procedures Single Shaft GripTight Isolation Plugs
Operating, installation or technical specification document.
Operating Instructions Multi Shaft-4in to-24in
Operating, installation or technical specification document.
GTDBB Technical Specification
Operating, installation or technical specification document.
Operating Procedures Double Block and Bleed Isolation Plug-4in to-24in
Operating, installation or technical specification document.
Installation Procedure Pop-A-Plug II Long Form
Operating, installation or technical specification document.
Installation Procedure for Pop-A-Plug P2-Short Form
Operating, installation or technical specification document.
Procedimiento De Instalacion De Pop-A-Plug®
Operating, installation or technical specification document.
Tube Preparation Procedure Copper Nickel and Brass Pop-A-Plug
Operating, installation or technical specification document.
Through The Tube Installation Procedures CPI Perma
Operating, installation or technical specification document.
Operating Procedures Close Quarters Ram Pop-A-Plug
Operating, installation or technical specification document.
Pop-A-Plug Manual Tool Operating Procedure
Operating, installation or technical specification document.
Drawing Manual Installation Tool Pop-A-Plug
Operating, installation or technical specification document.
Procedure for Pop-A-Plug P2P Installation with SRPTP Adapter
Operating, installation or technical specification document.
Removal Tool Procedures Pop-A-Plug
Operating, installation or technical specification document.
RAM PACKAGE OPERATING INSTRUCTIONS Dutch
Operating, installation or technical specification document.
Operating Procedures for Pop-A-Plug Air Cooled Heat Exchanger Installation
Operating, installation or technical specification document.
Technical Specifications Bolt Type Test Plug
Operating, installation or technical specification document.
Technical Specifications OD GripTight Plug
Operating, installation or technical specification document.
Technical Specifications GripTight Test Plug
Operating, installation or technical specification document.
Operating Instructions D-Series Hot Tapping Tool
Operating, installation or technical specification document.
Operating Instructions Small D-Series Hot Tapping Tool
Operating, installation or technical specification document.
Operating Procedures Short Vibra Proof
Operating, installation or technical specification document.
Operating Procedures Alternate Seal Material GripTight Test Plug
Operating, installation or technical specification document.
Operating Procedures Close Quarters Ram CPI Perma
Operating, installation or technical specification document.
Operating Procedures Outer Perimeter Tool Pop-A-Plug
Operating, installation or technical specification document.
Tube Venting Tool Instructions
Operating, installation or technical specification document.
Test Plug Vent Installation Procedures
Operating, installation or technical specification document.
Operating Procedures High Lift Flange Weld Test Plug-6-24-Inch
Operating, installation or technical specification document.
Operating Procedures High Lift-2-Flange Weld Test Plug-4-inch and Smaller
Operating, installation or technical specification document.
Technical Specifications High Lift Flange Weld Test Plug
Operating, installation or technical specification document.
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