Yoshitake HV-3 is used as a radiation valve and return valve for cold and hot water heat radiators. It is commonly used in building and housing applications.

Features

• General valve structure and the valve is completely closed with a fluororesin disc.
• Small handle torque by a fluororesin mold gland packing.
• No rust and tarnish by chromium-plating on the outside. (Parts No. 1, 2, 8, 12, and 13 are chrome-plated.)

Return Valve Combined Type

Specifications

Application	Cold and hot water
Maximum pressure	0.6 MPa
Maximum temperature	90℃
Connection	Inlet: JIS Rc screwed Outlet: JIS R screwed (union joint)

Materials

Part	Material
Body	Bronze
Valve	Fluororesin
Brass	Brass

TIP

When using the return valve, remove the handle after adjusting the flow rate as needed.

Dimensions (mm) and Weights (kg)

Nominal size	d	L1	L2	L3	H1	H2	H3	D	Weight (Angle type)	Weight (Straight type)
15A	1/2	56	25	53	24	59-63	65-69	10	0.29	0.31
20A	3/4	63	28.5	59.5	28	62-68	70-76	13	0.41	0.47

Structural Drawing and Parts

No.	Part Name	Material
14	Gasket	EPDM
13	Union Nut	Brass (C3771)
12	Union Nipple	Brass (C3771)
11	Set Screw	Carbon Steel (SWRM)
10	Spring Washer	Carbon Steel (SWRH)
9	Handle	Nylon 66 (66NG)
8	Gland Nut	Brass (C3604)
7	Gland	Brass (C3604)
6	Packing	Non-Asbestos

Precautions for Operation

WARNING

Tightening pressure of the packing may decrease during transportation and storing. In this case, please additionally fasten the gland nut before using the valve. If external leakage has been neglected, leakage may not stop by additional tightening. Please check the valve daily and do the additional fastening earlier.