Grease Interceptor

معترض الشحوم الهايدروميكانيكية



RSK-GI Grease interceptors, is accordance with the legal obligations that stems from the entry into force of the Regulation (UE) N. º 305/2011 of Construction Products, fulfilling all the requisites of the Standard:

  • American National Standards Institute (ANSI): A112.14.3-2000
  • Plumbing & Drainage Institute (PDI): G-101      
  • International Association of Plumbing and Mechanical Officials (IAPMO): A112.14.3-2000

RSK-GI Grease Separators are totally watertight, appropriated to separate greases and oils of vegetable and animal origin from wastewater.

The raw material used was tested by an independent entity, in line with the requirements of Standard EN1825-1, guaranteeing high mechanical resistance and corrosion protection.

The equipment production under controlled conditions, the use of quality raw materials and the finished product inspection, in accordance with the demands of ISO Standard 9001, guarantee the final product quality.



  • Heavy duty materials.
  • Sludge trap built-in.
  • Protection Cover with non-odor safety.
  • Grease alarm system available.
  • High storage capacity for separated products.
  • High mechanical resistance and corrosion protection.
  • Easy to install and maintain.
  • Totally watertight.
  • Without power consumption.
  • Low cost.
  • Without odors with a correct ventilation.
  • Available with two kinds of materials:
  1. Made of stainless steel 304 L / 316 L.
  2. Made of fiber glass 3-10 mm thickness.
  3.  Made of Acid Resistant Epoxy Coated Steel.


The wastewater produced in food processing are full of oils and fats that interfere with drainage systems and sewage treatment.




The installation of a grease separator can retain oils and fats, avoiding damage to systems and sanitation, its application is recommended in the following locations:


  • Restaurants
  •  Canteens
  • Hotels
  • School’s
  • Bars
  • Residential areas
  • Camping Parks
  • Laundries
  • Any site with high quantity of Grease and Oil.




RSK hydro-mechanical grease interceptors are designed to remove fats, oils, and grease from waste water.

Grease interceptors prevent greasy substances from entering plumbing systems, septic fields, and waste water treatment facilities, where they are difficult to process, and create environmental problems.

Commonly specified in commercial kitchen and food processing areas, properly specified and maintained interceptors keep drainage systems free of problematic grease accumulations.

Grease interceptors will separate all lighter-than-water substances, collecting them inside the interceptor, above the static water line.

Design criteria is regulated by plumbing code, and generally follows or references criteria set forth by The Plumbing & Drainage Institute (PDI), which tests and certifies standard capacity interceptors.

The accepted industry and PDI Standard (PDI-G101) is for interceptors to maintain 90% separation efficiency, up to their rated grease retention capacity (in. lbs.).

The interception process is accomplished by slowing incoming effluent with a flow restrictor (supplied with the interceptor), and directing it through baffling.

The slowing and baffling processes enable greasy substances to accumulate on top of the static water line, and treated water to exit into the drainage system, through a trap leg on the outlet side of the interceptor.




  • Stainless Steel (-SS):

For good general corrosion resistance and stability against intracrystalline corrosion effects of the various steels listed in the EN 10088-1, EN 10088-2 and EN 10088-3, only used austenitic steels (304L - 316L)

Interceptor bodies are 11 ga. cold rolled steel, with an oven cured, acid resistant baked grey epoxy coating, inside and out. Standard cover is epoxy coated.

  • Fiber Glass reinforced plastics:

Constructed using resins, reinforcement materials, processing agents and other materials in accordance with EN 976-1:1997, clause 3.




The majority of plumbing codes list the drainage fixture-unit values for plumbing fixtures. For fixtures not listed, the codes provide drainage fixture-unit values based on drain outlet or trap size.

Drainage fixture-unit values are converted to GPM discharge rates on the basis of one drainage fixture-unit equaling 7.5 GPM fixture discharge rate.

The drainage fixture-unit sizing for grease interceptors is included for those that prefer this approach as an alternative to the conventional (volume) sizing.

The following table provides the suggested PDI size grease interceptor based on drainage fixture-unit sizing method.

The following factors may require an increase in the size of the grease interceptor: location, presence of detergents in the waste water, ratio of grease to water, specific gravity weight of the grease filtrates, speed of incoming water flow, presence of large particles mixed with the grease laden water, and percentage of maximum flow capacity.

The interceptor should be installed as close as possible to the source of grease to prevent

pipes draining into the grease interceptor from becoming clogged as grease-laden water cools before entering the grease interceptor.


Fixture Outlet or Size


Drainage Trap

Fixture Unit Value

Discharge Equivalent


Suggested GPM Flow Rate Interceptor
























50 or 75


Grease interceptors are sized according to the rate of incoming flow too, in gallons per minute (GPM). Associated with the incoming flow rate is an interceptor's capacity. The rated capacity, in lbs., is listed at twice the flow rate, in GPM. (Extracted from: PDI: G-101).


General Procedure:

To Determine the Flow Rate of Each Sink:

1. Calculate the capacity of the sink in cubic inches:

_____(LENGTH) x _____(WIDTH) x _____ x (DEPTH) = _____CU. IN.

2. Convert the capacity from cubic inches to gallons per minute (GPM): _____CU.IN ÷ 231 = _____GPM.

3. Adjust for displacement: _____GPM x 0.75 = _____GPM.

4. Result is the flow rate required to drain the sink in one minute.




In special cases where this data is not accessible (when constructing buildings and complexes), then the DFU norm can be used to calculate the corresponding sizes (Selection from J.R. Smith):




Total DFU

Glass wash machine




Presine unit




Dish wash machine




Converyer unit




Handwash basin




Pot sink




Beech Oven








Coffee machine




Hot water boiler




Cold room




Floor Gully








Total DFU


Flowrate (GPM) = Total DFU ÷ 2.6

Engineering Specification (Stainless steel, Coated steel) .


Engineering Specification (Fiber glass)



Flow control fittings ensure 90% or more grease retention efficiency of the interceptor.

When consideration isn’t given to the flow rate of the waste water to be handled, the actual flow rate through the interceptor usually exceeds its rated maximum.

With such flow rate, the interceptor would be overloaded. Retention time within the unit would not be sufficient for maximum separation.

The result would be low efficiency, and pollutants left in the waste water would pass through the interceptor, making the installation less than effective.

When the flow is controlled by use of a flow control fitting so that it can never exceed the maximum rating of the interceptor, and the interceptor is cleaned on a regular basis, the maximum pollutant retention efficiency will be achieved and maintained.

All flow control fittings are built with an air intake and should be connected to the vent stack or vent not lower than the flow level of the highest drain serviced or terminated in a return bend at the same elevation outside of the building.

A vented flow control fitting improves the efficiency of the grease interceptor by introducing air into the body of the interceptor.

As the air bubbles rise to the surface, they are coated with grease. This process brings grease to the surface faster, and as a result, increases the efficiency.









2” (52)

0.375” (9)

2” (50)

2” (52)

0.500” (13)

2” (50)

2” (52)

0.656” (16)

2” (50)

2” (52)

0.750” (19)

2” (50)

3” (75)

1.000” (25)

2” (50)

3” (75)

1.250” (31)

2” (50)

3” (75)

1.250” (31)

2” (50)

3” (75)

2.000” (50)

2” (50)

4” (102)

2.000” (50)

2” (50)

4” (102)

2.250” (57)

2” (50)



GA-1 is an alarm device for monitoring the thickness of the grease layer accumulating in a grease separator. The system consists of GA-1 control unit, GA-SG1 sensor and a cable joint.

GA-1 grease alarm features: 

  • Protecting our environment
  • Versatile device for basic requirements
  • Robust
  • Designed to comply EN 1825 and DIN 4040 norms
  • Easy to install
  • Remote monitoring capability
  • Especially suitable for all kind of grease separators


GA-1 Control Unit

Dimensions                                     125 mm x 75 mm x 35 mm (L x H x D)

Weight                                               250 g Package 0,8 kg (control unit + sensor + cable joint)

Enclosure                                         IP 65, material polycarbonate Cable glands adjustment range 6-10 mm

Operation temperature                 -30 ºC…+50 ºC

Supply voltage                                230 VAC ± 10 %, 50/60 Hz The device is not equipped with mains switch

Power consumption                                 5 VA

Sensors                                            GA-SG1 sensor

Relay output                                                Potential-free relay output 250 V, 5 A Operational delay                                                              10 sec. Relay de-energize at trigger point.

Electrical safety                             IEC/EN 61010-1, Class II , CAT II

EMC Emission                                IEC/EN 61000-6-3

Immunity                                           IEC/EN 61000-6-1

Manufacturing year                                   xxx x xxxxx xx YY x

Please see the serial where        YY = manufacturing year

number on the type plate                        (e.g., 16 = 2016)




Principle of operation                   Capacitive

Material                                             POM, PUR, AISI 316

Weight                                               350 g (sensor + fixed cable)

IP-classification                             IP68

Operation temperature                 0 ºC…+90 ºC

Cable                                                 Fixed cable 2 x 0.75 mm2. Standard length 5 m, other lengths optional. The max. length of the fixed cable is 15 m, can be extended. Maximum cable loop resistance is 75 Ω.

EMC Emission                                IEC/EN 61000-6-3

Immunity                                          IEC/EN 61000-6-1

Manufacturing year                                   GAxxxxxYY

Please see the serial                     where YY = manufacturing year

number from the                            (e.g. 16 = 2016)

bottom of sensor



GA-2 alarm device is specially designed for grease separators. It indicates when it is time to empty the grease separator and thus prevents harmful grease emissions to the sewer system.

GA-2 grease alarm features:

  • Protecting our environment
  • Versatile device for basic requirements
  • Robust
  • Designed to comply EN 1825 and DIN 4040 norms
  • Easy to install
  • Remote monitoring capability
  • Especially suitable for all kind of grease separators

GA-2 Control Unit

Dimensions                                    125 mm x 75 mm x 35 mm (L x H x D) 4.92 in x 2.95 in x 1.38 in (L x H x D)

Weight                                                   250 g / 0.55 lbs.

Package                                            1200 g / 2.65 lbs. (control unit + 2 sensors + cable joint)

Enclosure                                         IP 65, material polycarbonate Cable glands for cab diameter 6-10 mm / 8-10 AWG

Operation temperature                 -30 ºC…+50 ºC / -22°F... +122°F

Supply voltage                               230/115 V AC ± 10 %, 50/60 Hz. The device is not equipped with a mains switch. Fuse maximum 10 A.

Power consumption                                  5 VA

Sensors                                            GA-HLL1 and GA-SG1 sensors

Relay output                                    2 pcs potential-free relay outputs max. 5A 250 V AC / 30 V DC. Operational delay 10 sec. Relay de-energize at trigger point.

Electrical safety                             Class II, IEC/EN 61010-1, UL 61010-1 CAN/CSA-C 22.2 NO. 61010-1-12

Overvoltage category                   II

EMC                                                   IEC/EN 61000-6-3 IEC/EN 61000-6-1

Manufacturing year                                   xxx x xxxxx xx YY x

Please see the serial where        YY = manufacturing year

number on the type plate                        (e.g., 19 = 2019)


GA-HLL1 and GA-SG1 sensors


 Principle of operation                  Capacitive

Material                                             POM, AISI 316

Weight                                               350 g / 0.77 lbs. (sensor + fixed cable)

IP-classification                             IP68

Temperature                                                Operation 0 °C... +90 °C / 32 °F...194°F

Environment -30 °C... +90 °C / -22 °F... +194 °F

Cable                                                             CM chlorinated polyethylene rubber

2 x 0.75 mm2 / 2 x AWG 18

Standard length 5 m / 16.4 ft.

Can be extended up to 200 m / 660 ft.

EMC                                                   IEC/EN 61000-6-3

IEC/EN 61000-6-1

Manufacturing year                                   GAxxxxxYY

Please see the serial where        YY = manufacturing year

number from the                            (e.g., 19 = 2019)

bottom of the sensor


Odor Removal with Dosing Pump

Dosing Pump AMS 200

AMS200 is a simple and reliable range of micro-processor-based wall mounted solenoid driven dosing pump. The range has been designed to provide a general solution to the most commonly found daily needs. The range features both constant and proportional flow rates managed through a manually adjustable control dial on the front panel.

AMS200 is an analogue dosing pump with constant flow rate with manual adjustment using the control dial on the front panel. Power-ON led indicator.

AMS200 uses premium materials in its manufacture. The pump head comes as standard in PVDF-T, but can be optionally

specified in natural PVDF and comes with a ceramic ball valve as standard improving the reliability of the pump over time and offers chemical compatibility of the wetted parts.

AMS’s diaphragms are made of pure solid PTFE offering a superior life expectancy

guaranteed by SEKO for 5 years, making routine replacement no longer necessary.


  • Power-ON led indicator
  • Multi color LED status system
  • Level control input
  • Timed dosing with a weekly programmable timer
  • Dosage in ppm, dosage batch


Odor Removal


EZ Grease Trap and Drain is a unique liquid bacterial blend formulated

specifically, to control fats, oils, and grease (FOG) levels and odors associated with grease traps and drain systems.

The concentrated microbial blend is perfect for use in lowering FOG levels where operations are incurring exceedance surcharges.

EZ Grease Trap and Drain significantly reduces grease trap pump out frequency and cost, as well as eliminates malodors associated with interior/under-the-sink grease traps and stagnant drain systems at the source. Its neutral formula will not damage pipes or equipment.

EZ Grease Trap and Drain may be added manually or automatically metered directly from the container into the system.


Food Service and Production Grease Traps, Down Pipes, Lift Stations, Drains, Septic Tanks, Sewers.


Highly concentrated formula aggressively targets proteins, lipids, and carbohydrates

Eliminates foul odors at the source and replaces them with a fresh, pleasing fragrance

May be manually dosed or automatically metered into the system

Significantly reduces grease trap pump out frequency and cost

Grease Traps

Start using EZ Grease Trap & Drain after grease trap has been pumped.

For initial system startup, pour one gallon directly into the trap to start treatment.

Product should be manually added or automatically metered directly into the trap

or into a drain directly upstream of the trap according to the following maintenance schedule.



Grease interceptors must have a vented waste, sized in accordance with code requirements for venting traps to retain water seal and prevent siphoning.



One interceptor to serve multiple fixtures is recommended only where fixtures are located close together. In such installations, each fixture should be individually trapped and back-vented




To obtain optimum operating efficiency of a properly sized and installed PDI certified grease interceptor, a regular schedule of maintenance must be adhered to. All PDI certified grease

interceptors are furnished with manufacturer’s operating and maintenance instructions, which must be followed to ensure efficient satisfactory operation.


All grease interceptors must be cleaned regularly. The frequency of grease removal is dependent upon the capacity of the interceptor and the quantity of grease in the waste water.

Grease removal intervals may therefore vary from once a week to once in several weeks.

When the grease removal interval has been determined for a specific installation, regular cleaning at that interval is necessary to maintain the rated efficiency of the interceptor.

After the accumulated grease and waste material has been removed, the interceptor should be thoroughly checked to make certain that inlet, outlet and air relief ports are clear of obstructions.


Grease and other waste matter that has been removed from the interceptor should not be introduced into any drain, sewer, or natural body of water.

This waste matter should be placed in proper containers for disposal.

Where recovery of grease is desired, it can be handled in a manner suitable to the authorities.


illustrate various grease interceptor installations normally encountered in domestic, commercial and institutional systems.

These figures will serve as a guide to practical application of grease interceptors.


Warranty Policy

warranty period:

From the date of installation

• Warranty period of 2 years for the product body (grease blocker), Includes leakage and damage from manufacturing.

• Warranty for motors and pumps is two years.

• Providing supplies and spare parts for a period of five years.


Warranty Policy:

 General rules and conditions:

1. The original contract must be provided.

2. Warranty means that the product has been approved for repair, Replacement is only for products that cannot be repaired, and in the event of a manufacturing defect in the product, within six days from the date of installation, the product can be exchanged or returned.

3. The product must be within the warranty period, and under the original sales invoice.

4. The warranty covers any manufacturing defect of the product, and does not include any malfunction caused by misuse.

5. The warranty does not cover consumables that must be replaced or replaced periodically.

6. Warranty is voided in case the product is serviced at centers not approved by Rusukh.

7. Installation, operation and periodic maintenance is carried out (for a company/companies) officially approved by Rusukh Company.

8. The warranty does not include any additional damage resulting from the delay in reporting to request a product repair.