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Cointra

SpainBoiler Spare Parts

Cointra is a manufacturer of boiler components and gas-burner controls, with a product portfolio centered on thermal-management hardware for industrial and commercial heating applications. The company specializes in natural-gas burner nozzles, thermostatic control valves, thermocouples, membrane seals, and ignition/safety control modules—components typically integrated into atmospheric and forced-draft boiler systems operating in continuous or non-permanent duty cycles. The control modules (exemplified by the MICROFLAT series) are rated for 2–4 mm spark gaps and operate at low consumption (2.5 VA typical), with non-volatile and volatile lockout logic and SELV-type safety circuits compliant with 24 V DC safety standards. These components are manufactured to tolerances suitable for replacement in OEM boiler units and third-party service applications. Cointra's nozzle and seal geometries are standardized (e.g., membrane diameters of 36×44 mm, M10 and M5 valve ports) to facilitate cross-unit compatibility. The product line addresses the routine maintenance and failure-recovery cycles common to industrial boiler fleets—nozzles subject to carbon buildup, membranes and seals prone to thermal fatigue, and control circuits requiring periodic replacement due to spark-electrode wear or valve stiction.

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About Cointra

Cointra is a manufacturer of boiler components and gas-burner controls, with a product portfolio centered on thermal-management hardware for industrial and commercial heating applications. The company specializes in natural-gas burner nozzles, thermostatic control valves, thermocouples, membrane seals, and ignition/safety control modules—components typically integrated into atmospheric and forced-draft boiler systems operating in continuous or non-permanent duty cycles. The control modules (exemplified by the MICROFLAT series) are rated for 2–4 mm spark gaps and operate at low consumption (2.5 VA typical), with non-volatile and volatile lockout logic and SELV-type safety circuits compliant with 24 V DC safety standards. These components are manufactured to tolerances suitable for replacement in OEM boiler units and third-party service applications. Cointra's nozzle and seal geometries are standardized (e.g., membrane diameters of 36×44 mm, M10 and M5 valve ports) to facilitate cross-unit compatibility. The product line addresses the routine maintenance and failure-recovery cycles common to industrial boiler fleets—nozzles subject to carbon buildup, membranes and seals prone to thermal fatigue, and control circuits requiring periodic replacement due to spark-electrode wear or valve stiction.

Common Applications

  • Commercial boiler maintenance — Cointra 5L nozzles and thermostatic valve assemblies for scheduled pressure-burner overhaul and component replacement
  • Atmospheric gas-burner retrofit — MICROFLAT ignition-control modules for retrofitting or upgrading non-permanent-operation burner systems with 24 V safety logic
  • Thermal-control regulation — Cointra M10S and M5 thermostatic valves for modulating water or process-fluid temperature in heating loops and hot-water distribution networks
  • Burner-system fault recovery — Thermocouple and membrane-seal replacement to restore flame-detection and pressure-regulation function after thermal stress or electrode erosion
  • OEM boiler parts supply — Standardized Cointra nozzles, seals, and ignition components as plug-compatible spares for original-equipment service and warranty repair networks
Origin: Manufactured in Spain

Related brands we carry

Comparable manufacturers in the same product category.

Ambiance
Ariston
Baxi
Beretta
Chaffoteaux
ELM Leblanc

Frequently asked questions

Common questions about Cointra from 3G Electric.

What is the spark-gap specification for Cointra MICROFLAT burner-control modules?

Cointra MICROFLAT series control modules are rated for spark gaps of 2–4 mm and are designed for atmospheric gas burners in non-permanent operation, with or without forced-air supply. The modules consume 2.5 VA and incorporate SELV-type safety circuits. They support both non-volatile and volatile lockout modes to handle flame-failure and ignition-fault scenarios.

Are Cointra 5L nozzles and valves interchangeable across boiler brands?

Cointra 5L nozzles and thermostatic valves (M5, M10S) use industry-standard port geometries and spray patterns, making them suitable as replacement components in many OEM boiler designs. However, nozzle spray angle, air-inlet configuration, and valve pressure rating must match the original equipment specification. We provide specification sheets to verify compatibility before purchase.

What pressure and temperature range are Cointra membrane seals rated for?

Cointra membrane seals (36×44 mm and other sizes) are rated for boiler operating pressures and temperatures typical of commercial heating systems. Exact pressure limits depend on seal material and boiler design pressure. Technical datasheets for individual seal SKUs detail pressure ratings; contact us for application-specific guidance.

Does Cointra offer thermostatic valve bodies and cartridges separately?

Cointra thermostatic valves are supplied as complete assemblies in M5 and M10S configurations (e.g., model 5274). Replacement cartridges and internal trim pieces are available as separate spare parts, allowing selective repair without full valve replacement. We stock both complete valves and internal components.

What is the thermocouple assembly SKU PCM10008 used for?

Cointra thermocouple assembly 6058 (SKU PCM10008) is a flame-sensing element for natural-gas boiler ignition circuits, wired to detect pilot flame or main burner flame. The unit supports dual-thermostat outputs and is typically integrated into burner control circuits to enable or lock out fuel supply based on flame presence.

Does 3G Electric supply Cointra products?

Yes — 3G Electric (S) Pte. Ltd. supplies Cointra products. We stock the Cointra catalog and supply genuine factory-original products with full manufacturer warranty and technical support.