Yoshitake SY-5 is a versatile, compact, lightweight, and economical Y-type strainer. It features a high-flow-rate marine type design with the largest possible filtration area to minimize flow rate decreases caused by clogging. The strainer is ideal for protecting pressure reducing valves, temperature regulators, steam traps, and other pipeline equipment.

Features

• Versatile, compact, lightweight, and economical.
• High-flow-rate marine type with maximum filtration area in view of decrease in flow rate caused by clogging.

Specifications

Application	Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
Maximum Pressure	2.0 MPa
Maximum Temperature	220℃
Body Material	Ductile cast iron
Screen Material	Stainless steel
Screen Perforation	φ2.5-4P
Screen Mesh	Standard 80 mesh
Connection	JIS Rc screwed

INFO

• Available with 20 to 100 mesh screen or only with perforation on request.
• Sizes 10A to 32A are available attached with a plug (brass or S15C material).
• Recommended to use SY-6 for cold and hot water applications.

Dimensions and Weights

Size	d	L	H1	ds	ls	Plug Size	Weight (kg)
10A	Rc 3/8	65	50	18	32	(Rc 1/4)	0.4
15A	Rc 1/2	75	55	20	35	(Rc 1/4)	0.6
20A	Rc 3/4	90	70	25	50	(Rc 3/8)	0.9
25A	Rc 1	110	85	32	60	(Rc 3/8)	1.4
32A	Rc 1-1/4	135	95	40	70	(Rc 3/8)	2.2
40A	Rc 1-1/2	145	105	45	75	Rc 3/8	3.4
50A	Rc 2	170	120	55	90	Rc 3/8	4.8

(Note: The plug size in parentheses is for cases ordered with a plug.)

Operation and Structure

No.	Name of Parts	Material
1	Body	Ductile Cast Iron
2	Cap	Ductile Cast Iron
3	Screen	Stainless Steel
4	Gasket	Non-Asbestos
5	Plug	Carbon Steel or Malleable Cast Iron

The screen removes dust, scale, and other foreign matter out of the fluid flowing from the inlet port of the strainer.

Pressure Loss and Sizing

When selecting the nominal diameter of the pipe, consider the standard flow velocity for the fluid kind to avoid noise, vibration, and excessive pressure drops.

Standard Flow Velocity of Fluid

Fluid	Standard flow velocity
Water, Oil	2 ~ 4 m/s
Steam	20 ~ 40 m/s

Pressure Loss Diagram (For Water)

Installation and Maintenance

WARNING

• Installation Direction: Confirm if the direction of fluid flow matches the inlet and outlet ports of the product. If installed in the opposite direction, it will not function properly.
• Maintenance Space: Reserve adequate space for the maintenance and cleaning of the screen.
• Piping Stress: Do not transmit unreasonable load, bending, or vibration to the strainer to prevent leakage.
• Scalding Hazard: In case high-temperature fluid is applied, keep bare hands off the strainer.
• Disassembly: Completely discharge internal pressure from the lines and cool the valve down before disassembling to clean the screen. Always replace the gasket with a new one during reassembly.

Piping Examples

(Figure 1: Standard installation with cap facing downward)

(Figure 2: For steam piping, install the strainer with the cap facing sideways to minimize condensate accumulation)

(Figure 3: For upward fluid flow, install a blow valve to remove scale accumulated at the bottom of the riser pipe)