Cla-val 81-18 Check Valve

Description

The Cla-Val Model 81-18 Check Valve is a hydraulically operated No-Slam Check Valve. This valve opens when the pressure at the inlet exceeds the discharge pressure. A gradual rate of opening prevents sudden opening surges. When a pressure reversal occurs the higher downstream pressure is applied to the cover chamber through the control tube lines, and the valve closes drip tight.

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Code	Size			BIM(revit)	CAD(dxf)	Certification
A88GY003	2 1/2″ NPT M x 2 1/2″groove	1	0	–	–
A88GY005	4″ NPT M x 4″groove	1	0	–	–

Code	Size		BIM(revit)	CAD(dxf)
A98Y001	4″ NPT F x 2 1/2″ NPT M	1	–	–
A98Y002	4″ NPT F x 2 1/2″ NST M	1	–	–
A98Y101	6″ NPT F x 2 1/2″ NPT M	1	–	–
A98Y102	4″ NPT F x 2 1/2″ NST M	1	–	–
A98Y201	6″ NPT F x 2 1/2″ NPT M	1	–	–
A98Y202	6″ NPT F x 2 1/2″ NST M	1	–	–
A98Y251	4″ NPT F x 2 1/2″ NPT M	1	–	–

SIZE	INSIDE DIAMETER	WALL THICKNESS
1/2	16.5	0.18
3/4	20	0.20
1″	25	0.22
1 1/4	32	0.25
1 1/2	38	0.25
2″	51	0.35
2 1/2	64	0.50
3″	75	0.50
4″	100	0.60

Code	Size		BIM(revit)	CAD(dxf)
A140Y001	4″groove inlet x 4″groove outlet	1	–	–
A140Y002	4″ NPT inlet x 4″groove outlet	1	–	–
A140Y003	4″ NPT inlet x 4″ NPT outlet	1	–	–

SIZE	OUTSIDE DIAMETER	WALL THICKNESS	LENGTH
1/2	20.70mm	1.98mm	3.05 meters
3/4	26.10mm	2.10mm	3.05 meters
1″	32.77mm	2.35mm	3.05 meters
1 1/4	41.59mm	2.42mm	3.05 meters
1 1/2	47.82mm	2.54mm	3.05 meters
2″	59.93mm	2.67mm	3.05 meters
2 1/2	72.57mm	3.81mm	3.05 meters
3″	88.29mm	3.81mm	3.05 meters
4″	113.44mm	3.81mm	3.05 meters

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Code	Size		BIM(revit)
A56Y001	1 1/2″ NPT F x 1 1/2″ NST M	1	–
A56Y005	2 1/2″ NPT F x 2 1/2″ NST M	1	–
A56Y051	1 1/2″ NPT F x 1 1/2″ NST M	1	–
A56TY005	2 1/2″ NPT F x 2 1/2″ NST M	1	–

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Cla-val 81-18 Check Valve

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