Fitting

Tube Fitting PP / SUS303 like Corrosivity Series

RoHS2 Compliant

PP (Polypropylene) is selected for the body material and EPDM for seal material to adapt to clean environment.

Resin
  • PP is used for the main resin parts. PP: PP: Excellent chemical resistance, high transparency, and ideal for clean environments.
Metal
  • Special stainless steel is used for the main metal parts. Special stainless steel: Corrosion resistance is equivalent to SUS303, making it ideal for environments prone to corrosion.
Seal rubber
  • EPDM is used as the seal rubber material. EPDM: Excellent weather resistance, cold resistance, and ozone resistance. Care must be taken as it is less resistant to mineral oils.
  • No copper-based metallic material is used in flow paths
  • HNBR or FKM is used for the seal rubber material. *Some products are only compatible in the flow path.
  • No lubrication is used during assembly.

Options

  • Fluorine grease is used as grease, and the product is packaged in a clean room after cleaning with clean air.
  • After vacuum ultrasonic cleaning with HFE (hydro fluoro ether) in a clean room, deaeration packaging is performed.

Advantages

PP (Polypropylene) is selected for the body material and EPDM for seal material to adapt to clean environment.

Achieves cost reduction compared to Tube Fitting PP / SUS304 type.

Special Stainless* or SUS303 for the metal material.
*SUS303 like corrosivity.

Clear (semitransparent) color used for the resin body makes it possible to check visually the fluid (liquid) inside.

Sanitary condition is also easily checked.

The thread material can be chosen from 2 different types.

The thread material can be chosen from PP resin or Special stainless* (or SUS303) depending on applications. *SUS303 like corrosivity.

No metal component is exposed to fluid medium.

(For PP resin thread type only)

Specifications

Fluid medium Air, Water, Others such as chemicals (Conditional*1)
Max. operating pressure 1.0MPa(at0~20℃)*2
Max. vacuum -100kPa
Operating temp. range 0~80℃(No freezing)

Warnings

*1. Make sure to follow the instructions below when the fluid medium is water or liquid.

Surge pressure must be controlled lower than max. operating pressure when using water or liquid as a fluid medium.

Tap water in Japan free from foreign substances or contamination can be used. Carry out the evaluation under an actual operating condition for using other kind of water.

Be sure to place Insert Ring (WR) into the tube edge when using water or liquid as a fluid medium.

The corrosive resistance of SUS303 is different from that of SUS304, depending on the kind of chemicals or mixed gases used as fluid medium. Make sure to use PISCO products after verifying their suitability on the user side.

Warnings

*2. When operating temp. exceeds 20°C, refer to the following chart "Relation of Operating Temp. & Max. Operating Pressure"

Port size

Tube dia.

mm size(mm) φ4, φ6, φ8, φ10, φ12

Thread size

Metric thread M3x0.5, M5x0.8
Taper pipe thread R1/8, R1/4, R3/8, R1/2

Construction

Type & Price list

Thread & Tube connection (Thread material: PP) (5 types)

Thread & Tube connection (Thread material: Special stainless) (5 types)

Tube & Tube connection (8 types)

Tube & Fitting connection (1 type)

Detailed Safety Instructions

Warning

1.Check chemical resistance before using the products, when the fluid medium is chemicals or mixed gases. Depending on the conditions, it may cause damage to the products, the escape of tubes, and a fluid leakage

2.When the fluid medium is water or liquid, do not use fittings unless the operating environment meets all the described specifications in the catalog. Otherwise, it may cause damage to the products, the escape of tubes and a fluid leakage.

3.Resin can be deteriorated by being exposed to direct sunlight or ultraviolet rays.

4.Max operating pressure varies depending on operating temperature range. Be sure to check the chart "Relation of Operating Temp. & Max. Operating Pressure" above and use the products within the indicated pressure range.

Caution

1.The seal rubber material EPDM is not suitable for general pneumatic circuit, due to its inferior durability against mineral oil.

2.When coating the thread with seal tape or sealant, do not coat 1.5 to 2 screw ridges from the tip of the thread.

3.Tighten taper thread by hand until it stops, then use a spanner to tighten it about 2 or 3 more turns. Excessive tightening may break the thread part. Inadequate tightening may cause a loosened thread or a fluid leakage.

4.Resin type thread may have a fluid leakage or get loosened caused by “creep phenomena”, due to a long term use of the thread. Check the tightening condition periodically and re-torque the thread in case of leaks. If re-torque of the thread does not solve a leakage problem, change it to a new product.

5.Tube insertion into this product is tighter than that of Tube Fitting Standard Series due to its oil-free specification. Make sure to insert tube up to tube end. When inserting a tube, put a liquid like water on the tube, which does not affect the product and the tube. It will improve the smoothness of tube insertion.

6.Tighten a bulkhead nut of Bulkhead Union P (PPMP) type with tightening torque shown in the table below. It may cause a fluid leakage by "creep phenomena" due to a long term use of the resin thread. Check the tightening condition periodically and re-torque the thread in case of leaks. If re-torque of the thread does not solve a leakage problem, change it to a new product.

7.The level of corrosion and dust emission from the fittings varies by operating conditions. In case there is a possibility of negative effects on machines or facilities due to these conditions, evaluate the suitability of the products in advance.

Frequently Asked Questions for Fitting Series

Inquiries about this product

It is also possible to suggest products suitable for various conditions such as applications and functions. Please feel free to contact us or visit the nearest sales office.

The following are frequently asked questions. Please check before making inquiries.