The Yoshitake SY-9 is a light-weight and compact Y-type strainer used for dust prevention in various pipelines. It features a high-flow-rate marine type design with the largest possible filtration area to minimize the decrease in flow rate caused by clogging. Disassembling and cleaning are easy, as the easy plug relieves residual pressure, making cap removal simple and safe.

Specifications

Application	Air, Cold and hot water, Other non-dangerous fluids
Max. pressure	1.0 MPa
Max. temperature	80°C
Connection	JIS Rc screwed
Body Material	Ductile cast iron (FCD450)
Screen Material	Stainless steel
O ring	FKM (Viton)
Cap	C3604 (Brass)
Perforation	φ2.5-4P
Mesh	Standard 60 mesh

INFO

Products with 20 to 100 mesh filters are also available upon request. The size of the Easy-plug's cross-hole is φ10.

Dimensions and Weights

Size	d	L (mm)	H1 (mm)	ds (mm)	ls (mm)	A (mm)	Weight (kg)
15A	Rc 1/2	75	70	20	35	21.8	0.7
20A	Rc 3/4	90	84	25	50	26.8	0.9
25A	Rc 1	110	96	32	60	30	1.7
32A	Rc 1 1/4	135	114	40	70	36	2.8
40A	Rc 1 1/2	145	120	45	75	41	4.0
50A	Rc 2	170	131	56	90	46	5.1

Parts

No.	Part Name	Material
1	Body	Ductile Cast Iron (FCD450)
2	Cap	Brass (C3604)
3	Screen	Stainless Steel (SUS304)
4	O Ring	FKM
5	Cross recessed head screws	Stainless Steel (SUS)
6	Spacer	Brass (C3604)
7	Spring	Stainless Steel (SUS)

Dust, scale, and other foreign substances flowing into the product through the inlet port are removed by the screen.

Nominal Size Selection

Select a nominal size of the product equivalent to that of the pipe. Using a smaller nominal size increases the pressure loss through the strainer, which may possibly reduce the equipment inlet pressure below the specified limit.

Standard Flow Velocity

Fluid	Remarks	Standard flow velocity
Air (Lower pressure)		15 m/s [5-15]
Air (Extremely low pressure)	0.1 MPa or less	10 m/s [3-10]
Water		2 m/s [2-4]

Nominal Size Selection Chart (Fluid: Water)

Screen: φ2.5-4P perforations with 60 mesh filter

Installation

WARNING

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. Enable the operator to pick up the screen from the product by reserving required working space for maintenance and inspection.
3. Connect the product to the pipes securely. Improper connecting may cause fluid leakage from the pipes when vibration is applied.

Maintenance Dimensions

Size	H (mm)
15A	80
20A	100
25A	110
32A	130
40A	140
50A	160

Operation and Maintenance

Before Operation

Before letting the fluid into the product, make sure that there is no possibility of danger when the fluid flows into the ends of piping. Spouting hot fluid may scald skin.

TIP

Use the product with a maximum pressure loss below 0.1 MPa. Periodically clean the screen to prevent damage. Clogging can be monitored when pressure gauges are installed in upstream and downstream of the strainer.

Precautions During Maintenance

WARNING

1. Completely discharge the pressure inside of the product and piping prior to disassembly and inspection.
2. When the product is used for hot fluid, cool down the product to the condition that it can be touched with bare hands.
3. When removing the cap, fluid flows out after loosening the cap by 1 to 3 turns.

Disassembly and Reassembly

1. Remove the cap. When the cap is strongly tightened, loosen it by applying a driver to a hole on the side of the cap.
2. Remove the screen from the body.
3. Clean the screen with compressed air or detergent.

When reassembling, replace the O ring with a new one, and securely fasten the cap to the specified torque.

Nominal size	Size of O Ring	Specified torque value (N·m)
15A	P26	6
20A	P32	6
25A	P40	6
32A	G50	10
40A	G55	10
50A	G65	20

Troubleshooting

Trouble	Cause	Remedy
Fluid does not flow	1. Screen is clogged. 2. Stop valves are closed.	1. Clean the screen. 2. Open the stop valves.
Excessive pressure loss	1. Screen is clogged. 2. Pressure gauge is out of order. 3. Nominal size is too small.	1. Clean the screen. 2. Replace pressure gauge. 3. Replace product with proper size.
Leakage from the cap	1. O ring is damaged. 2. Cap is loose.	1. Replace O ring. 2. Tighten with specified torque.