Yoshitake GLV-20F is a ductile cast iron globe valve designed for applications involving steam, air, cold and hot water, oil, and other non-dangerous fluids. It features a SUS304 valve with Stellite treatment, a JIS 20K RF flanged connection, and is rated for a maximum pressure of 2.8 MPa.

Specifications

Model	GLV-10F	GLV-20F
Application	Steam, Air, cold and hot water, oil, other non-dangerous fluid	Steam, Air, cold and hot water, oil, other non-dangerous fluid
Nominal Size	15A to 50A	15A to 50A
Maximum pressure	1.4 MPa *1	2.8 MPa *1
Maximum temperature	300°C *1	350°C *1 (Manual indicates 350°C, Catalog indicates 300°C)
Body Material	Ductile cast iron	Ductile cast iron
Bonnet Material	Ductile cast iron	Ductile cast iron
Valve Material	SUS403	SUS304 + Stellite
Connection	JIS 10K FF flanged	JIS 20K RF flanged

INFO

*1 The relation between pressure and temperature depends on JIS B 2051 pressure-temperature standard. Valve is closed at the time of shipment from the factory.

Dimensions and Weights

Nominal Size	d	D1	L	H	I	Weights (kg)
15A	15	83	110	126	6	2.2
20A	20	105	120	135	7	2.8
25A	25	112	130	150	8	4.2
32A	32	132	160	162	9	5.8
40A	40	132	180	183	11	6.9
50A	50	180	230	186	13	9.8

Flange Dimensions (JIS 20K RF)

Size	d	D1	L	H	l	D	C	g	t	f	n-h	Weight (kg)
15A	15	83	110	126	6	95	70	51	15	1	4-15	2.2
20A	20	105	120	135	7	100	75	56	17	1	4-15	2.8
25A	25	112	130	150	8	125	90	67	17	1	4-19	4.2
32A	32	132	160	162	9	135	100	76	19	2	4-19	5.8
40A	40	132	180	183	11	140	105	81	19	2	4-19	6.9
50A	50	180	230	186	13	155	120	96	19	2	8-19	9.8

Storage and Installation

Caution

1. Store the product indoors in a dust free, low humidity, dry and ventilated environment.
2. Installation should be conducted by suitably trained personnel, wearing protective head, eye, hand and foot protection.
3. To install the product, check the direction of the product so that the fluid flowing and the arrow marked on the product are in the same direction.
4. 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.
5. During transportation or storage of the product leakage may occur from the gland nut due to decreasing of tightening pressure by stress relaxation of the packing. Be sure to retighten the gland nut before use.
6. In case that the product is expected to be frozen, be sure to conduct freezing prevention measures or water draining treatment (after use).

Operation

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.

Caution

1. When using the product with its valve fully open, turn the handle counterclockwise by 45 degrees from the fully open position to prevent the valve from being stuck.
2. Be sure to open/close the valve by applying torque within the limit specified in "the valve User's Guide" published by the Japan Valve Manufactures Association. Do not apply torque more than specified.
3. Do not try to turn the handle beyond its fully open/closed positions. Otherwise the valve may be damaged.

Troubleshooting

Trouble	Cause	Remedy
Outside leakage	1. The gland nut is loosened. 2. The gland packing is damaged. 3. The spindle is damaged.	1. Tighten the gland nut additionally. 2. Replace the product with new one. 3. Replace the product with new one.
Leakage from the valve and/or valve seat on complete closing	1. The valve and/or valve 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 gland nut. 2. Foreign substance is stuck on spindle and screw part.	1. Loosen the gland nut 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.

Maintenance

Warning

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

Periodic Inspection

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

Inspection item

• Opening and closing operation
• Abnormal sound
• Outside leakage

If any abnormality is found, see "Troubleshooting" and conduct appropriate measure.