Kit PETRO-PIT® 401 Complete hydrocarbon filtration system

Description

SPI® Technology

Within SPI® technology, the PETRO-PIT KIT range is available in different complete filtration systems depending on the fluid to be treated, for transformer retention tanks and pits of small and medium dimensions. Thanks to its self-locking system, the filter traps harmful hydrocarbons and helps to permanently prevent the risk of soil pollution. Its oleophilic and hydrophobic polymer component permanently traps hydrocarbons, natural and synthetic esters, while allowing filtered rainwater to drain through.

This kit contains:

• 1 stainless steel 90° elbow, 1.5″ female outlet, to be screwed onto the retention tank;
• 1 stainless steel 1.5″ quarter-turn valve;
• 1 PFC-44 pre-filter;
• 1 PETRO-PIT-401 filter for non-specific hydrocarbons;
• 1 roll of Teflon tape to ensure watertightness.

Description of the PETRO PIT® 401 KIT :

• Made of rigid UV-treated PVC: increased strength and durability.
• Oleophilic and hydrophobic polymer component: permanently traps hydrocarbons.
• Approximate filtered flow rate (*): approximately 3 to 5 L/min / Approximate saturation (*): 1 L / Recommended replacement (*): every 1 to 3 years.
•  Features:
  • Hydrocarbon containment: the PETRO-PIT 401 cartridges that make up the PETRO PIT 401 KIT operate passively 24/7 to meet hydrocarbon containment requirements and prevent rainwater contamination.
  • Temperature tolerance: PETRO-PIT 401 filters are designed to tolerate a wide range of temperatures, ensuring reliable performance in various environments. Indoor or Outdoor at nominal operating ambient temperature: -60° to +80°C.
  • Perfect watertightness: the system’s compression O-ring creates a perfect seal, providing complete filtration capabilities.
  • Customization according to the required flow rate: how much water do you need to discharge per minute? Petro Pit filters are available in different sizes and can be adapted to ball valves, drains, wall penetrations and many piping systems.

Easy installation and maintenance: the PETRO-PIT filter model is installed using a screw-on cartridge, with an outlet allowing the installation of a valve and a filter. Maintenance of the cartridges in the so-called “dry” area is simple and quick: simply close the valve, unscrew the old cartridge, screw in the new one and reopen the valve.

(*) Depending on the operating conditions at each site, the quantity of hydrocarbon traces filtered by the cartridge, the regularity of maintenance of the tank/pit/prefilters, etc. These are operating conditions for which SANERGRID® and SPI® cannot make any commitment.

SPI filters have been recognized for more than 30 years for their high reliability, extreme robustness and longevity, even under the most difficult conditions: resistance to hot transformer oils (>100°C), water emulsified with dielectric oil, high resistance to ultraviolet radiation and temperature variations, etc. SPI is ISO 9001 quality certified for its production process and incorporates an eco-design approach aimed at reducing the amount of material and CO2 used during the manufacturing process.

The KIT PETRO-PIT 410 has been discontinued since January 2026 and replaced by the KIT PETRO-PIT 401.

Recommended Pre-Filtration for SPI PETRO-PIT® Filters

All our PETRO-PIT® KITS require pre-filtration in order to limit the risk of clogging, protect PETRO-PIT filter cartridges, and ensure optimal drainage of rainwater contaminated with hydrocarbons, mineral oils, or esters.

Pre-filtration is primarily designed to retain sludge, sand, leaves, dust, and other impurities present in the surrounding environment or carried by the water. It therefore helps preserve the hydraulic performance of the filtration system and extend the service life of the cartridges.

• Light pre-filtration PFC-44: For environments with low levels of impurities, we recommend using the light PFC-44 pre-filter. Installed upstream of the PETRO-PIT® cartridge, outside the retention unit, the PFC-44 helps limit the risk of clogging of the filter cartridge caused by dust and particles carried by the water. It is installed upstream of the cartridge itself, outside the retention unit.
• Pre-filtration cage PFB-0810: For environments heavily exposed to dirt and debris, the PFB-0810 pre-filtration cage is particularly suitable. Installed inside the retention unit, it retains common impurities such as sand, leaves, sludge, and other debris carried by rainwater before they reach the filters. This solution is recommended for sites subject to demanding operating conditions or a high concentration of particles.

A PETRO-PIT® KIT Range Adapted to Every Application

The PETRO-PIT® KIT range is available in several references depending on the type of pollutant to be treated and the intended application: hydrocarbons, mineral oils, natural esters, and synthetic esters. The cartridge size also depends on the flow rate to be treated. PETRO-PIT® is the only range on the market offering a comprehensive selection of references suitable for different drainage configurations.

The PETRO-PIT® 401 KIT is used for the drainage and filtration of rainwater potentially contaminated with hydrocarbons, particularly in the following configurations:

• fire-resistant retention tanks ERT® and TRT®-LHD, as well as custom-made solutions ERT-MODULO® and TRT-MODULO® from SANERGRID, installed underneath transformers, autotransformers (AT), compensation reactors (CR), and station auxiliary transformers (SAT);
• temporary installations containing dielectric oils or hydrocarbons, including flexible retention units such as TRFLEX® SUPER ECO under IBCs, TRFLEX® ECO TRUCK™ under mobile equipment, or TRFLEX®-ECO for the temporary storage of transformers, with the PVC KIT range;
• outdoor substations, photovoltaic skids, and BESS platforms equipped with rainwater drainage systems exposed to the risk of hydrocarbon pollution.

Main Available References

• KIT PETRO PIT-401 and KIT PVC PETRO-PIT 401: hydrocarbons and mineral oils (replaces the KIT PETRO-PIT 410 reference as of January 1, 2026);
• KIT PETRO PIT-416 and KIT PVC PETRO-PIT 416: hydrocarbons and mineral oils;
• KIT PETRO PIT-FR3-416 and KIT PVC PETRO-PIT 416FR3: natural esters;
• KIT PETRO PIT 420 SYNBLOC and KIT PVC PETRO-PIT 420 SYNBLOC: synthetic esters.

Accessories

• BRAD® protective housing BRAD® – New: the BRAD® protective housing protects SPI PETRO-PIT® and PETRO-PIPE® filters and pre-filters against accidental impacts. It is particularly suitable for photovoltaic skids, retention tanks, concrete pits, and installations equipped with filter-cartridge drainage systems designed to treat rainwater contaminated with hydrocarbons.
• The BRAD® housing helps to:
  • reduce the risk of breakage of the PVC threaded heads of filter cartridges and pre-filters;
  • maintain system watertightness;
  • preserve the hydraulic performance of the system;
  • secure maintenance operations around retention tanks, transformers, and associated equipment.

Spare Parts and Consumables

For spare parts, consumables, and accessories, you can contact SANERGRID or SYNERDIS. For standard cartridges, ready-to-install kits, and maintenance parts, Technikelec®, our online sales platform, offers the PETRO-PIT® KIT range for easy ordering and fast shipping.

Additional information

Applications of the KIT PETRO-PIT® 401 System

Depending on the country, applicable regulations, and operating conditions, installing a retention system underneath industrial equipment or storage units containing hydrocarbons may be strongly recommended or even legally required. Sanergrid supports you in selecting SPI® filters, defining the drainage strategy, and managing environmental risks.

To allow the installation of an SPI® filtration system, the retention unit must be equipped with a watertight wall penetration compatible with the cartridge or connection accessories.

Before Installing the KIT PETRO-PIT® 401 System

Before installation, it is important to check the configuration of the lowest point of the retention tank or containment pit.

This configuration determines the type of filtration system required:

• screw-in solution with the PETRO-PIT® or PETRO-PIPE® ranges;
• recessed solution with the PETRO-PIPE® range.

Make sure that the retention unit is clean and free of oil, and that the wall penetration is compatible with the 1.5″ threaded head onto which the pre-filter or optional valve is fitted.

Installing the KIT PETRO-PIT® 401 System

• The 1.5″ stainless-steel mounting kit, including an elbow, valve, and PTFE tape, is screwed onto the PETRO-PIT® filter cartridges.
• The filter is screwed onto a 1.5″ female connection on the outlet of the valve provided for this purpose (to be supplied by the customer). The use of PTFE tape or thread sealant on the threads is recommended to ensure complete watertightness at the threaded connections.
• The filter must be positioned horizontally or slightly inclined in the direction of flow to ensure optimal drainage of the filtered rainwater.
• The PFC44 pre-filter for PETRO-PIT® is installed upstream of the cartridge. It retains impurities present in the water and helps prevent premature clogging of the filter.

Maintenance of the PETRO-PIT® 401 Cartridge

• We recommend replacing the P-PIT401 filter cartridge every 1 to 3 years, depending on operating conditions, the site environment, and the level of exposure to hydrocarbons and impurities.
• SPI® filters are sensitive to sludge, sand, leaves, and other impurities carried by the water. These elements can significantly reduce the drainage flow rate or even block the filter. Effective pre-filtration is therefore essential to protect the cartridge inlet and maintain its hydraulic performance. The pre-filter should be inspected regularly and rinsed with clean water as often as necessary. The rinsing frequency depends directly on the amount of impurities present at each drainage point.
• To facilitate filter monitoring and replacement operations, SPI products are identified by a batch serial number corresponding to the batch of active material tested and validated as compliant by the manufacturer. This identification makes it possible to trace installed filters, monitor their service life, and plan recommended replacement dates through a simple visual inspection.
• At the end of its service life, the filter and pre-filter must be disposed of through standard hydrocarbon waste treatment channels under waste code [150202*].

For specific traceability requirements and automatic reminders of your maintenance dates, SANERGRID® can provide individual tracking through a maintenance contract with one of our national partners.

The PETRO-PIT^® range, part of the SPI^® filter technology, is the European benchmark for rainwater filter cartridges contaminated with hydrocarbons for small-volume hydrocarbon retention. It is the only filter on the market that has been validated for over 30 years by the largest French and European industrial companies (EDF, ENEDIS, SNCF, SCHNEIDER, RTE, ABB HITACHI, SIEMENS, IBERDROLA, NATURGY, REE, EDP, ENEL, IREN, TERNA, E-ON, RWE, VATTENFALL, ELIA, ESB, SCOTTISH POWER, NATIONAL GRID, NETWORK RAIL, UK PN, BRITISH PETROLEUM, TOTAL ENERGIE, BASF, BAYER, ELES, CERN, ITER, VOLVO, DEUTSCHE BAHN, ADIF, SNCB, REPSOL, etc… non-exhaustive list).

Rainwater drainage and hydrocarbon pollution: thanks to the SPI anti hydrocarbons filter system, the tank is empty of water most of the time and ready to receive hydrocarbons. In compliance with water legislation, the water discharged from the tanks is not contaminated with more than 5 ppm of hydrocarbons, in accordance with standard EN 858-1 (“light liquid separation installations”).

SPI filters^® are regularly tested by independent laboratories: SANERGRID Bureau Veritas report certified COFRAC I.D.: 003606/2776443/1/1/1 in 2015 (France), SPI Phoenix laboratory reports I.D.: AR67044 in 2002, 2004, 2005, 2009, 2018, 2022 (USA), TÜV report Nr 2432974 in 2016 (Germany), NUA report -Z-11895-1/1-2016.

2605 BROCHURE ANTI-HYDROCARBONS FILTERS SPI SYNERDIS [ENV00-2605]