Yoshitake KBLV-2SF pneumatic ball valve is a full bore type valve featuring a stainless steel body and a double-acting KA type actuator using NAMUR dimensions. It is designed for steam, air, hot and cold water, oil, and other non-hazardous fluids.

Features

• Body of the ball valve is made of stainless steel.
• Full bore type ball valve.
• KA type actuator uses NAMUR dimensions.
• Double-acting actuator.

Specifications

Valve Specifications

Feature	Specification
Model	KBLV-2SF
Type	Full bore type
Nominal Size	15 to 100A
Application Fluid	Steam, air, hot and cold water, oil, and other non-hazardous fluids
Body, Cap Material	Stainless steel
Ball Material	Stainless steel
Seat Material	PTFE
Connection	JIS 10K RF equivalent, ANSI 150lb RF equivalent, EN PN16 equivalent
Max. Pressure	1.4 MPa (JIS), 1.9 MPa (ANSI), 1.6 MPa (EN)
Max. Temperature	167°C
Piping Orientation	Horizontal or Vertical (inverted horizontal is not allowed)
Flow Direction	No restriction on flow direction
Actuator Mapping	15A/20A: KA12, 25A: KA20, 32A/40A: KA35, 50A: KA50, 65A: KA110, 80A: KA160, 100A: KA255

Pneumatic Actuator Specifications

Feature	Specification
Operating Fluid	Air, nitrogen gas
Operating Pressure Range	0.4 MPa to 0.8 MPa
Ambient Temperature	-20 to +80°C
Operation	Double action
Operation Angle	90° ±5
Body Material	Aluminum alloy
Mounting Standard	Valve mounting: ISO5211, Ancillaries: NAMUR

Pressure and Temperature Rating

Dimensions and Weight

Nominal size	L (JIS 10K / ANSI 150lb)	L (EN PN16)	H (JIS 10K)	Weight (JIS 10K)	Weight (ANSI 150lb)	Weight (EN PN16)
15A	108	130	161	3.1	2.8	3.3
20A	117	150	166	3.5	3.1	4.0
25A	127	160	197	5.5	4.5	6.0
32A	140	180.3	218	7.1	6.0	8.1
40A	165	200	241	9.0	8.4	10.0
50A	178	230	261	11.8	11.7	13.4
65A	190	290	300	17.8	17.7	20.1
80A	203	310	333	24.7	25.0	27.6
100A	229	350	369	33.5	37.7	38.0

(Dimensions in mm, Weight in kg)

Output Torque

Actuator Model	0.4 MPa	0.45 MPa	0.5 MPa	0.55 MPa	0.6 MPa	0.7 MPa	0.8 MPa
KA12	10	11	12	13	14	17	19
KA20	16	18	20	22	24	28	32
KA35	29	33	36	40	44	51	58
KA50	40	45	50	55	60	70	80
KA110	90	102	113	124	135	158	181
KA160	132	149	165	182	198	231	264
KA255	200	226	251	276	301	351	401

(Torque in N·m)

Operation

When the operating air is supplied into port A, the pistons move outward discharging air from port B, and the drive pinion rotates counterclockwise (0° to 90°). As a result, the valve opens.

When the operating air is supplied into port B, the pistons move inward discharging air from port A, and the drive pinion rotates clockwise (90° to 0°). As a result, the valve closes.

Installation and Handling

Installation Orientation

The installation posture can be either horizontal or vertical, but ensure that the actuator is not installed upside down. This may cause malfunction.

Correct:

Wrong:

Piping and Preparation

• When piping the product, make sure to remove any foreign objects, scales, or other debris from inside the piping.
• Always install a strainer (80–100 mesh) on the inlet side of the product.
• Connect operating air pipes securely so that it would not leak.
• It is recommended that a regulator is installed on the operating air piping for the actuator.

Safety Precautions

• If it is necessary to suspend the valve with the actuator attached, do not directly hook the rope or hook onto the actuator to suspend it.
• Supply clean and dry compressed air not containing water, oil or foreign substances.
• This product should be used in the fully open or fully closed position. Using the product at intermediate positions may damage the ball and seat.
• For high-temperature fluids, do not touch the product directly with bare hands.

Maintenance and Inspection

To maintain the product's functionality and performance, perform regular inspections approximately once a year. The actuator is lubricated at the factory and does not require further lubrication.

Inspection Items:

• Check if the open/close operation is functioning correctly.
• Check for abnormal sounds.
• Check for external leaks.
• Check for leaks at air pipe connections.

Troubleshooting

Faults	Causes	Countermeasures
External leakage	Loose nut / Loose hex bolt	Tighten the nut / hex bolt.
	Damaged gasket / gland packing	Replace the product.
Seat leakage	Damaged seat / Damaged ball	Replace the product.
	Foreign object caught	Remove the foreign object.
Actuator not operating	Operating torque is not enough.	Check if the operating air pressure is appropriate.
	Valve is locked due to foreign substances.	Clean the valve.
Stops at intermediate position	Valve is locked due to foreign substances.	Clean the valve.