Yoshitake BLV-1 is a bronze ball valve equipped with a chrome-plated brass or stainless steel ball. It is widely applicable for fluid media such as steam, air, water, and oil. The valve is supplied in a closed position at the time of shipment from the factory, and there is no restriction on flow direction.

Specifications

Application	Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
Maximum pressure	Saturated steam: 1.0 MPa Water, oil, air or other non-dangerous fluid at 40°C or lower: 4.12 MPa
Material (Body)	Bronze
Material (Ball)	Cr plated brass or stainless steel
Material (Stem)	Brass
Connection	JIS Rc screwed

Dimensions and Weight

Nominal size	d1	d	L	H	W	Weight (kg)
8A	Rc 1/4	10	49	47	106	0.2
10A	Rc 3/8	10	49	47	106	0.2
15A	Rc 1/2	12.7	53	47	106	0.3
20A	Rc 3/4	15	56	52	106	0.3
25A	Rc 1	20	68	55	106	0.5
32A	Rc 1-1/4	25	86	66	136	0.8
40A	Rc 1-1/2	31.8	96	72	136	1.2
50A	Rc 2	38	108	81	136	1.8

Parts and Materials

No.	Name of Parts	Material	Qty
1	Body	Bronze	1
2	Cap	Bronze	1
3	Ball	Brass + Chrome plate or Stainless Steel	1
4	Stem	DZR	1
5	Handle	Steel + PVC	1
6	Gland Packing	PTFE	1
7	Washer of Packing	Brass	1
8	Ball seat	PTFE	2
9	Nut	Steel	1

Operation and Maintenance

WARNING

Before applying fluid, make sure that there is no danger if the fluid flow into the end of the piping. Failure to follow this notice may result in property damage due to fluid leakage.

Completely discharge the pressure inside of the product, line and equipment before inspection and maintenance. For high temperature fluid, cool down the product til it can be touched with bare hands. Failure to follow this notice may result in injury or burns due to residual pressure.

Storage and Installation

• Store the product indoors in a dust free, low humidity, dry and ventilated environment.
• Installation should be conducted by suitably trained personnel, wearing protective head, eye, hand and foot protection.
• The product can be used for "complete opening" and "complete closing". If the product is used at intermediate opening, ball and ball seat may be damaged.
• Be careful that the threaded connection between the mating pipe and the internal threaded connections of the valves are in line to avoid piping stresses in the valves.
• During transportation or storage of the product leakage may occur from the washer of packing due to decreasing of tightening pressure by stress relaxation of the packing. Be sure to retighten the washer of packing before use.

Periodic Inspection

Please conduct periodic inspection about once a year in order to maintain optimal performance and function of the product.

• Opening and closing operation
• Abnormal sound
• Outside leakage

Troubleshooting

Trouble	Cause	Remedy
Outside leakage	1. Tightening of the washer of packing is loosened. 2. The gland packing is damaged. 3. The spindle is damaged.	1. Tighten the washer of packing additionally. 2. Replace the product with new one. 3. Replace the product with new one.
Leakage from the ball part on complete closing	1. The ball and/or ball seat is damaged. 2. Foreign substance is stuck.	1. Replace the product with new one. 2. Remove the foreign substance.
Operation torque of the handle is abnormally large	1. Too much tightening of the washer of packing. 2. Foreign substance is stuck on spindle and screw part.	1. Loosen the washer of packing and tighten it again to the no leakage degree. 2. Remove the foreign substance.
Abnormal sound	1. Each screw part is loosened.	1. Retighten the loosened parts.