ElectroStop® Monolithic Isolation Joints provide a permanent, maintenance-free solution for electrically isolating piping systems while helping protect critical infrastructure from corrosion. Unlike traditional flange assemblies, ElectroStop® eliminates multiple components and instead delivers a fully assembled, factory-tested isolation solution that simplifies installation and improves long-term reliability.
As a result, operators can reduce maintenance requirements while maintaining the effectiveness of cathodic protection systems across transmission, distribution, and industrial piping applications.
Designed for Cathodic Protection and Pipeline Integrity
For superior quality assurance, every ElectroStop® isolation joint is 100% hydrostatically tested, electrically tested, and weld tested to ensure optimal performance and safety. Manufactured under a certified ISO Quality Management System, ElectroStop® Monolithic Isolation Joints in fact deliver dependable electrical isolation, corrosion protection, and long-lasting durability for oil and gas, water, industrial, and energy pipeline applications.
As a result, this rigorous process helps ensure dependable performance in even the most demanding operating conditions.
Features & Benefits
- Eliminates the risk of electrical short circuits
- No field assembly required, reducing installation time and labor costs
- Maintenance-free design for long-term reliability
- Cost-effective alternative to competitive products
- Durable internal and external protective coating for enhanced corrosion resistance
- 100% electrically tested to ensure performance and quality
- Complete weld inspection for superior structural integrity
- Manufactured under a certified ISO Quality Management System
- 100% butt-weld construction for maximum strength and durability
Available Sizes & Pressure Classes
- Available in NPS sizes 10" through 48"
- Offered in pressure ratings up to ANSI Class 900
Product Specifications
150#ANSI CLASS (PN OR DP 25)
- 150# ANSI Pressure Rating = 285 psi
- ElectroStop® Continuous Operating Pressure = 300 psi
- Working Temperature: Range = -20 °F to 212 °F (-28 °C to 100 °C)
- Electrical Resistance (Dry Air) = 25 Mohms @ 1kv D.C.
- Breakdown Voltage (Dry Air) = 5kv @ 60Hz for 1 minute (Upon request)
300-400# ANSI CLASS (PN OR DP 64)
- 300# ANSI Pressure Rating = 740 psi
- 400# ANSI Pressure Rating = 990 psi
- ElectroStop® Continuous Operating Pressure = 1000 psi
- Working Temperature: Range = -20 °F to 212 °F (-28 °C to 100 °C)
- Electrical Resistance (Dry Air) = 25 Mohms @ 1kv D.C.
- Breakdown Voltage (Dry Air) = 5kv @ 60Hz for 1 minute (Upon request)
600# ANSI CLASS (PN OR DP 100)
- 600# ElectroStop® Continuous Operating Pressure = 1,500 psi
- Working Temperature Range = -20 °F to 212 °F (-28 °C to 100 °C)
- Electrical Resistance (Dry Air) = 25 Mohms @ 1kv D.C.
- Breakdown Voltage (Dry Air) = 5kv @ 60Hz for 1 minute (Upon request)
900# ANSI CLASS (PN OR DP 100)
- 900# ANSI Pressure Rating = 2,035 psi
- ElectroStop® Continuous Operating Pressure = 2,035 psi
- Working Temperature Range = -20 °F to 212 °F (-28 °C to 100 °C)
- Electrical Resistance (Dry Air) = 25 Mohms @ 1kv D.C.
- Breakdown Voltage (Dry Air) = 5kv @ 60Hz for 1 minute (Upon request)
Monolithic isolation joints shall be bolt less and completely factory assembled in accordance with the appropriate requirements of ASTM, API, DIN and BS codes. All welds shall be butt weld construction. The dielectric isolation material shall be a high temp thermosetting fiberglass epoxy material. Sealing shall be by dual static, self energized “O” ring seals housed in accurately machined grooves, fully protected from cavitation in full compliance with ASME design codes. Each unit shall be tested for Electrical (@5kv, 25 Mohm *Upon request), Hydrostatic (@ 90% of burst pressure.) and Weld (Ultrasonic/Magnetic Particle). The Monolithic Isolation Joint shall be the Electro-Stop® Isolation Joint as manufactured by GPT.