FREQUENTLY ASKED QUESTIONS ON INSTALLATION AND CERTIFICATIONS FOR PMA CONDUITS FITTINGS

PMA conduit fittings require specific tightening torque values to ensure proper sealing and connection integrity. Torque specifications vary by fitting size and type. Always follow manufacturer torque charts to prevent over-tightening damage or under-tightening leaks. View Fact sheets for complete torque specifications, based upon practical laboratory measurements under standard climatic conditions (23°C / 50% relative humidity).

PMA conduit fittings require specific tightening torque values to ensure proper sealing and connection integrity. Torque specifications vary by fitting size and type. Always follow manufacturer torque charts to prevent over-tightening damage or under-tightening leaks. View Fact sheets for complete torque specifications, based upon practical laboratory measurements under standard climatic conditions (23°C / 50% relative humidity).

PMA recommends not exceeding 70% filling grade for conduit systems to ensure proper cable movement, heat dissipation, and future maintenance access. Application-specific guidelines and industry standards must also be considered. Proper filling prevents cable damage and maintains system performance over time.

PMA recommends using fixation clips or clamps every 300 mm to 500 mm for proper conduit support. Mounting distance may vary based on application requirements, environmental conditions, and mechanical stress. Proper fixation prevents sagging, ensures cable protection, and maintains system integrity throughout the installation. Application specific guidelines and standards have to be additionally considered.

PMA conduit and fittings require controlled storage conditions to maintain balanced moisture content and material integrity. For detailed temperature, humidity, and storage duration specifications, click below to view our complete storage guidelines.

PMA conduit systems undergo rigorous testing for mechanical strength, chemical resistance, temperature performance, and electrical safety. For complete certification details, videos, test methods, and compliance standards, click below.

PMA conduit systems comply with international standards including UL, CSA, IEC, and CE certifications for electrical safety and performance. Products meet rigorous requirements for industrial, commercial, and hazardous location applications. For complete certification listings view our standards and approvals page.

Global corporations including Siemens, Alstom, PESA, CRRC, Deutsche Bahn, and SNCF trust PMA for proven reliability across all railway applications. 

From roof and underfloor installations to couplings, intercar connections, and signalling systems, PMA delivers the dependability required for safe operation of trams, locomotives, freight cars, and high-speed trains worldwide.

PMA leads the industry with innovative solutions: the new X-series multilayer corrugated conduit technology and the PMAFIX Pro high-density connection system with IP69 classification. 

These technologies deliver maximum safety and reliability for electrical systems, ensuring superior protection in demanding railway environments—from harsh exterior conditions to critical signalling infrastructure.

PMA cable protection solutions have proven their reliability in demanding renewable energy applications including wind turbines, solar photovoltaic systems, and tidal installations. 

With 45 years of specialized experience in power generation, PMA delivers IP68/IP69-rated products that protect critical cables from mechanical stress, UV exposure, extreme temperatures, and harsh environmental conditions—ensuring continuous, uninterrupted operation essential for sustainable energy systems worldwide.

PMA offers comprehensive cable protection across renewable energy installations: nacelle wiring, tower and base protection for wind turbines, and DC power cables and inverter cabinet protection for solar photovoltaic systems. 

All PMA conduits meet strict fire safety regulations and feature proven UV and weathering resistance for long-term outdoor performance, with UL recognition and numerous worldwide approvals for both on- and offshore energy applications.

PMA delivers comprehensive cable protection across the full spectrum of machine building—from machine tools, packaging machines, and printing equipment to heating, ventilation, conveyor, and filling systems. 

Our flexible conduit solutions shield cables, wires, and data links against heat, cold, compression, tensile stress, and other external influences. With sizes ranging from 6mm to 125mm, specialized options for static and dynamic applications, and excellent performance at extreme temperatures and low humidity, PMA ensures seamless operation of production machinery, high-voltage systems, and emergency power infrastructure.

PMA delivers comprehensive cable protection engineered for demanding maritime environments across all shipbuilding applications. From open decks, cargo compartments, and engine rooms to superstructure, crew and passenger compartments, PMA solutions withstand extreme salt spray, moisture, vibration, and mechanical stress. 

Our specialized product range—including UV-resistant XSOL and PIS/PIH conduits for outdoor exposure, durable LLPA and VOH systems for engine compartments, and innovative divisible system conduits for retrofit and repairs—ensures reliable performance. Combined with marine-grade PMAFIX Pro, PMAFIX IP68, and IP66-rated fittings, PMA provides the durability and safety standards required for modern vessel construction and long-term maritime operations.

PMA provides specialized cable protection for fiber optic connections and critical telecommunications infrastructure in exposed and harsh environments. Our conduit solutions shield delicate fiber optic cables and data transmission lines from mechanical damage, UV exposure, moisture, and environmental stress. With flexible, lightweight designs that accommodate both indoor and outdoor installations, PMA enables reliable signal transmission for broadband networks, communication infrastructure, and high-speed data systems. Our products ensure the integrity of critical connections that keep networks operational.

PMA delivers comprehensive protection for modern telecommunications networks with products engineered for both above-ground and underground installations. Our flexible conduit systems accommodate multiple cables and fiber optic strands while providing excellent cable management and easy installation. With proven durability in challenging outdoor conditions, resistance to environmental factors, and compatibility with diverse network architectures, PMA supports the continuous reliability demanded by telecom operators and internet service providers worldwide.

Food and beverage facilities operate under strict hygiene and cleanliness requirements where cable protection is critical. PMA cable protection shields vital cables against mechanical damage, aggressive washdown chemicals, and environmental contamination. Our specialized solutions ensure equipment safety, signal integrity, and compliance with industry sanitation standards—protecting both infrastructure investments and product quality in demanding production environments.

ABB developed the JFBD nylon conduit specifically for the food and beverage industry with an innovative overextruded non-porous smooth jacket. This breakthrough design delivers superior cleanability and unrivalled resistance to aggressive cleaning agents and chemicals to ECOLAB standards. Combined with IP69 rating and tight bending radii for efficient installation, the JFBD enables rapid and effective washdown protocols essential for food safety compliance while reducing cleaning time and operational disruptions.

PMA provides two high-specification IP69-rated fittings for the food and beverage industry: the JKNH nylon fitting (FDA-compliant, tool-free installation, excellent chemical resistance) and the JENQ single-piece fitting in 316L stainless steel (ideal for highest hygienic demands). Both fittings deliver NSF169 and NSF14159-1 certifications alongside chemical resistance, enabling flexible, cost-effective solutions that meet the strictest food safety and hygiene standards while supporting quick, efficient assembly.