The perfect solution for marine applications where the use of aluminum is restricted. These filters are designed to handle a maximum flow of 500 l/min and a maximum pressure of 10 bar, making them an ideal choice for hydraulic system designers and specifiers seeking reliable filtration options.
Tank top mounted
‘In-to-out’ filtration
Cast iron filter head assembly
Multiple port configuration
We deliver directly and globally to end-users, agents, and resellers. Contact us at quotes@insatech.com.
STF Tank Top Mounted Return Filters: The Ideal Choice for Restricted Aluminum Applications
The STF Tank top mounted return filters from Parker, comes equipped with a magnetic column and a bypass with low hysteresis for efficient pre-filtration. Employing the "In-to-Out" filtration principle, the filter prevents contaminated oil from seeping back into the system. Crafted with a cast iron filter head assembly, this filter is well-suited for marine applications that require non-aluminum materials. With a filter head that boasts multiple ports, it can easily handle flow rates of up to 500 liters per minute at 10 bar working pressure, making it a convenient and effective option for integrating return line filtration with power packs. Additionally, standard airtight diffusers are available as an optional feature to prevent air ingress in the return line.
The STF series offer several advantages for marine applications where the use of aluminum is restricted, featuring:
Cast iron filter head assembly
LEIF® elements
Magnetic pre-filtration
In-to-Out filtration - contaminated oil cannot leak back into the system
As an authorized Parker distributor, Insatech combines global expertise with local insight to deliver tailored solutions for ship operators, shipyards, and industrial clients.
Partnering with us means more than access to Parker products - you gain engineering support, turnkey solutions, and expert service built around your operational needs.
With strong expertise in marine instrumentation, Parker filtration, fuel and oil monitoring, and hydraulic systems, we help you keep your operations reliable, efficient, and compliant.
At Insatech, we choose Parker Hannifin because their products set the industry standard for innovation, reliability, and performance. Parker’s advanced technologies and durable components ensure long-term efficiency and safety in demanding marine and industrial applications. By integrating Parker’s instrumentation, valves, and system solutions, we deliver trusted, high-quality results that help our customers operate smarter and more sustainably.
At Insatech, we deliver more than high-quality Parker Hannifin products - we provide complete Parker solutions. Combining engineering expertise, global support, and proven technology, our turnkey systems are built to meet real operational challenges. With tailored services and expert knowledge, we ensure efficiency, compliance, and long-term performance across marine, industrial, and process applications.
Determined by multipass test according to ISO 16889.
Flow fatigue characteristics
Filter media is supported so that the optimum fatigue life is achieved
Filtration media
Microglass III and Ecoglass III for LEIF® elements
Also available 10µm cellulose and 40µm stainless steel mesh
Element burst rating
10 bar (ISO 2941)
Pressure indicator options
Setting 0.7 or 1.2 bar
Visual pressure gauge
Electrical pressure switch
Options
Diffuser type P (straight pipe, no perforated plate area)
Diffuser type T (with closed diffuser end cap and with perforated plate area, recommended when oil entry in reservoir is close to the reservoir bottom or to ensure oil entry under the reservoir oil level)
Magnetic pack
Standard, only not included for STF 400 and 500
Filter element
LEIF® element with reusable metal element sleeve.
Optional conventional style element with steel end caps.
The LEIF® element is patented and safeguards the use of genuine parts. Note: LEIF® element can be used with mineral and HEES type oils. LEIF® contributes to ISO 14001 quality standards
Data Sheet - STF Series - Parker
English | pdf
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