Yoshitake GLV-10F is a ductile cast iron globe valve designed for reliable operation with steam, air, cold and hot water, oil, and other non-dangerous fluids. This page primarily covers the GLV-10F (JIS 10K), while also detailing specifications for the related GLV-20F (JIS 20K) series.

Specification

Model		GLV-10F	GLV-20F
Application		Steam, Air, cold and hot water, oil, other non-dangerous fluid
Nominal Size		15A-50A
Maximum pressure		1.4 MPa *1	2.8 MPa *1
Maximum temperature		300°C *1	300°C *1
Material	Body	Ductile cast iron
	Bonnet	Ductile cast iron
	Valve	SUS403	SUS304+Stellite
Connection		JIS 10KFF	JIS 20KRF

INFO

*1 The relation between pressure and temperature depend on P.2-3 JIS B 2051, pressure-temperature standard. Valve is closed at the time of shipment from the factory.

Dimensions (mm) and Weights (kg)

GLV-10F

Nominal Size	d	D1	L	H	I	Weights (kg)
15A	15	83	108	126	6	2.1
20A	20	105	117	135	7	2.6
25A	25	112	127	150	8	4.1
32A	32	132	140	162	9	5.6
40A	40	132	165	183	11	6.8
50A	50	132	203	186	13	9.1

GLV-20F

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

Storage and Installation

Storage and Installation

(1) Keep products indoors in a well-ventilated area with minimal dust and moisture. (2) Installation must be carried out by skilled professionals using proper protective equipment. (3) Ensure correct flow direction according to the arrow marked on the product. (4) Align the piping straight with the product axis to prevent excessive stress. (5) During transport and storage, gasket stress relaxation may cause the large nut to loosen. Always retighten the large nut before use. (6) If freezing is possible, take anti-freezing measures and drain after use.

Operating Hazard

Confirm that releasing fluid to the pipe end will not cause danger before allowing fluid flow. Fluid release may cause material damage.

Operation

Operation

(1) When fully open, turn the handle back by 45 degrees to prevent it from getting stuck. (2) Do not use excessive force when opening/closing. Operate within specified torque limits. (3) Do not turn the valve further in the open/close direction when it is already fully open or fully closed.

Troubleshooting

Condition	Cause	Countermeasure
External leakage	1. Large nut insufficiently tightened 2. Gland packing damaged 3. Valve stem damaged	1. Retighten the large nut 2. Replace product 3. Replace product
Leakage at body/seat when fully closed	1. Body or seat damaged 2. Foreign matter trapped	1. Replace product 2. Remove foreign matter
Abnormally large handle operating torque	1. Large nut overtightened 2. Foreign matter in stem threads	1. Loosen the nut and retighten until leakage stops 2. Remove foreign matter
Abnormal noise	1. Loose threaded parts	1. Retighten

Maintenance

Maintenance Safety

Before inspection, completely release internal pressure from the product and piping. For high-temperature fluids, wait until the product cools down enough to touch bare-handed to prevent burns.

Perform annual periodic inspections to maintain function and performance:

• Confirm normal opening/closing operation
• Check for abnormal noise
• Check for external leakage

Dimensional Drawing

Size	d	D1	L	H	l	Flange JIS 10K FF				Weight(kg)
						D	C	t	n-h
15A	15	83	108	126	6	95	70	13	4-15	2.1
20A	20	105	117	135	7	100	75	15	4-15	2.6
25A	25	112	127	150	8	125	90	15	4-19	4.1
32A	32	132	140	162	9	135	100	17	4-19	5.6
40A	40	132	165	183	11	140	105	17	4-19	6.8
50A	50	132	203	186	13	155	120	17	4-19	9.1