Yoshitake SY-10-30 is a cast carbon steel strainer designed to remove foreign substances such as dust, pipe scale, chips, or slugs from various types of pipelines. As part of the SY-10 series, this Y-type strainer is typically installed at the inlet side of pressure reducing valves, temperature regulating valves, pumps, or steam traps. It features a JIS 30K RF flanged connection, a standard 80 mesh stainless steel screen, and is capable of handling maximum pressures up to 3.0 MPa at temperatures up to 260°C.

Features

1. High-flow-rate marine type with the largest possible filtration area in view of decrease in flow rate caused by clogging.
2. Stainless steel screen with 80 mesh as standard.

Specifications

Application	Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
Nominal size	15A-250A
Maximum pressure	3.0 MPa
Maximum temperature	260°C
Body Material	Cast carbon steel (SCPH2 / A216 Gr.WCB)
Screen Material	Stainless steel (SUS304)
Perforations	φ6 - 8P (1.80 holes/cm²)
Mesh	Standard 80 mesh
Connection	JIS 30K RF flanged

INFO

• Available with 20 to 100 mesh screen upon request.
• If the temperature is over 260°C, please contact the manufacturer.

High-Pressure Gas Approved Products

For high-pressure gas applications, the SY-10H and SY-10HS models are available.

Model	SY-10H-30	SY-10HS-30
Application	High-pressure gas, Steam, Cold and hot water, Other non-dangerous fluids	High-pressure gas, Steam, Cold and hot water, Other non-dangerous fluids
Nominal size	15A-100A	15A-100A
Maximum pressure	3.0 MPa	3.0 MPa
Maximum temperature	300°C	300°C
Body Material	Cast carbon steel	Cast stainless steel
Screen Material	Stainless steel	Stainless steel
Connection	JIS 30K RF flanged	JIS 30K RF flanged

Structure and Parts

Dust, scale, and other foreign substances which flow into the inlet side of the strainer are removed by the screen.

No.	Parts Name	Material
1	Body	Cast Steel (SCPH2)
2	Cover	Carbon Steel (S25C)
3	Screen	Stainless Steel (SUS304)
4	Gasket	Non-Asbestos
5	Plug	Carbon Steel (S25C)

Nominal Size Selection

When selecting an appropriate nominal pipe size, it is necessary to consider fluid type, maximum flow rate, permissible pressure loss, and costs of piping and equipment. The standard flow velocity according to JIS F 7101 is provided as a reference:

Fluid	Remarks	Standard flow velocity
Saturated steam	Auxiliary piping for vacuum or small-diameter piping	15 m/s [10-20]
	Large-diameter piping	30 m/s [20-40]
Superheated steam	Piping diameter: approx. Φ75 – Φ250	40 m/s [30-50]
	Piping of high-grade material	70 m/s [65-80]
Air	Higher pressure: 1.0 MPa or more	20 m/s [20-25]
	Lower pressure	15 m/s [5-15]
	Extremely low pressure: 0.1 MPa or less	10 m/s [3-10]
Water, Oil		2 m/s [2-4]

Pressure Loss

Model: SY-10 Strainer. Screen: φ6 - 8P perforations with 80 mesh filter.

Maintenance and Operation

Precautions for Installation

1. When installing, check the direction of the product so that the fluid flowing and the arrow marked on the product are in the same direction.
2. Secure the space to remove the screen.
3. Do not apply excessive load, torque, or vibration to the product.
4. The product shall be installed with its cover faced downward. (If drainage problem occurs in a steam line, incline the product to the position at which the cover is kept horizontally.)
5. If the product can only be installed to run the fluid from the bottom to the top, make sure to install a blow valve in order to remove the scale accumulated at the bottom of the riser pipe.

Precautions for Operation

• Use the product under a maximum pressure loss below 0.1 MPa. Periodically clean the screen.
• Do not retighten the cover after leading fluid into the product to avoid damaging the gasket.

Safety Warning

• When the product is used for hot fluid, do not touch the product with bare hands to avoid scalds or injury.
• Completely discharge the pressure inside of the product, piping, and equipment prior to disassembly and inspection. When fluid is hot, cool down the product.

Disassembly and Reassembly

Excessive amount of foreign substances inside the product reduces filtration area and hampers fluid flow, which can damage the screen.

1. After checking the pressure gauge to make certain there is no pressure inside the body, remove the cover and screen. Clean up the screen by compressed air or water.
2. Clean the gasket contact surfaces of both the body and the cover. Improper cleaning may cause fluid leakage.
3. When reassembling, replace the gasket with a new one.
4. Attach the new gasket to the cover, attach the cleaned screen into the groove on the cover, and install the assembly to the body.

Piping Example

Clogging inside the product can be known from the differential pressure measured, when pressure gauges are installed in upstream and downstream of the product.