Yoshitake TA-16CVS is a stainless steel air vent valve designed for building equipment, industrial equipment, and building complexes. It is part of the TA-16 series, which is essential for air-conditioning piping systems because air mixed in the piping can lead to a decline in heat-effectiveness, noise production, or equipment corrosion. The TA-16CVS features a compact body and a straight-type check valve joint, ensuring automatic air discharge without sucking in outside air when the equipment stops operating.

Features

• All parts, except for the valve disc, gasket, check valve, and check valve joint, are made of stainless steel, offering high resistance to corrosion and durability.
• Wide working pressure range (0.01 to 1.0 MPa) ensures stable exhaust capacity.
• Can be installed in small spaces because of its compact body.
• Outstanding sealability offered by the fluororubber (FKM) valve disc.
• The TA-16CVS includes a straight-type check valve joint.

Specifications

Model	TA-16	TA-16L	TA-16CVA	TA-16CVS
Nominal size	15-25A	15-25A	15-25A	15-25A
Application	Cold and hot water	Cold and hot water	Cold and hot water	Cold and hot water
Working pressure	0.01-1.0 MPa	0.01-1.0 MPa	0.01-1.0 MPa	0.01-1.0 MPa
Check valve	No	No	Provided	Provided
Maximum temperature	90°C	90°C	90°C	90°C
Body, cover, float	Stainless steel	Stainless steel	Stainless steel	Stainless steel
Valve disc, gasket	FKM	FKM	FKM	FKM
Check valve joint	-	-	FKM (fluororubber)	FKM (fluororubber)
Inlet Connection	JIS R screwed	JIS R screwed	JIS R screwed	JIS R screwed
Outlet Connection	JIS Rc 1/4 screwed	Φ6 (hose inside diameter)	JIS Rc 1/4 screwed	JIS Rc 1/4 screwed

INFO

The TA-16CVS check valve closing pressure is -0.005 MPa or less.

Dimensions and Weights

TA-16CVS Dimensions:

Nominal size	d	H	Weight (kg)
15A	R 1/2	142	0.70
20A	R 3/4	144	0.72
25A	R 1	148.5	0.78

Exhaust Capacity

Operational Description

1. After installation, air exists in the product, and the float is lowered by its own weight. In this condition, since the valve disc is kept open by the lever, air is discharged outside by the internal pressure of the system.
2. When air is discharged, hot or cold water flows into the product to make the float come up on buoyancy, and the force that keeps the valve disc open through the lever is lost. Then the valve disc is closed by the spring and pressure to the valve disc.
3. When air bubbles are generated in the system and collected into the product, the inside water level drops, and the float loses buoyancy and opens the valve disc to discharge air.
4. Then the operation goes back to process 2. Repeating processes 2 and 3, air in the system can be removed.

Structure and Exploded View

No.	Main parts
1	Body
2	Cover
3	Seat (Exhaust outlet)
4	Hanger Metal
5	Valve Disc
6	Spring
7	Lever
8	Nut
9	Float
10	Gasket
11	Bolt
12	Label

Optional Parts

Available optional parts for exhaust outlet connections include:

• L-shaped hose joint
• Manual valve with copper joint
• Manual valve with hose joint
• Swivel joint (capable of turning 360 degrees)
• Swivel copper pipe joint
• Swivel hose joint
• Check valve joint (angle type - TA-16CVA)
• Check valve joint (straight type - TA-16CVS)

Installation and Piping

Installation Precautions

• Make sure to attach the joint and hose to the outlet of the product, and lead them to a drain ditch.
• Install the product vertically (tolerance angle 5°) to a place where air is easy to accumulate.
• Before installing, remove foreign substances and scale from the piping.
• Install a stop valve (cock or gate valve) at the inlet of the product for maintenance and inspection.
• Make sure that the end of the piping or tube of the product outlet makes a space of 50mm over the flood level.

Maintenance and Troubleshooting

Operation Note

A small amount of water may blow out with air at air discharge during initial operation. This is not a failure of the product.

Troubleshooting:

Trouble	Cause	Remedy
No air discharge	1. The stop valve on inlet side is kept closed. 2. Internal piping pressure is more than appropriate value. 3. Air accumulates too slowly.	1. Open the stop valve fully. 2. Lower the internal piping pressure, or replace the valve. 3. Install the valve on a place where air is easy to accumulate.
Water blowout from Exhaust outlet	1. Foreign substances exist on the valve disc and seat. 2. The float is damaged.	1. Remove and clean the valve disc and seat. 2. Replace the float.
External leakage	1. Damage or deformation of the body or cover. 2. Gasket is damaged.	1. Replace the product. 2. Replace the gasket.
Sucking in air outside	1. Foreign substances exist on the check valve.	1. Remove foreign substances.