KOSMEK In-Port Valves

KOSMEK Power Workholding

Product Information

Speed Control Valves and Air Bleed Valves are hydraulic circuit accessories that install directly into the port of compatible Kosmek hydraulic clamps, allowing flow control and air purging without external plumbing.

Speed Control Valves are available in two configurations. Type A (meter-in) incorporates a check valve that blocks free flow on the clamping stroke, forcing oil through an adjustable orifice to control clamping speed while allowing full-speed unclamping. Type B (meter-out) reverses the check valve orientation, permitting free flow on the clamping stroke while metering oil through the orifice on the unclamping stroke to control retraction speed. Type A is the appropriate selection when a controlled clamp approach is required to prevent workpiece marking — particularly on swing clamps and link clamps where arm sweep velocity is a concern. Type B is suited for spring-return or overhead-mounted clamps where uncontrolled release stroke velocity is the issue. Flow rate is adjusted with a wrench via the external adjusting screw, secured by a lock nut. Model BZL is rated for operating pressures up to 7 MPa; high pressur emodels are also available. Compatible clamp models are listed in the Documents section.

The Air Bleed Valve (Model BZX) installs in the same G-thread port and allows air to be bled from the hydraulic circuit by loosening the valve with a wrench. It is rated for operating pressures up to 35 MPa. Compatible clamp models are listed in the Documents section.

Documents

In-Port Valves

Control Valve

Technical Information

Applicable Products

KOSMEK In-Port Valves

PART NO.	MAXIMUM OPERATING PRESSURE (BAR)	SPEED CONTROL DIRECTION	THREAD	B	C
BZL0101-A	70	Clamp	G1/8A	15.5	15
BZL0201-A	70	Clamp	G1/4A	20	16
BZL0301-A	70	Clamp	G3/8A	24	19
BZL0101-B	70	Unclamp	G1/8A	15.5	15
BZL0201-B	70	Unclamp	G1/4A	20	16
BZL0301-B	70	Unclamp	G3/8A	24	19