Lexair, Inc. 2-Way Normally Open Direct Pilot Operated Valves

Valves
Poppet

Valves > Poppet Valve > Direct Pilot Operated - 2-way - Normally Open

Quick Links require enabling JavaScript.

Direct Pilot Operated Normally Open Air, Oil, Water or Vacuum

Product Profile	Specifications and Model Numbers	Technical Information

Specifications

Click here for an inside view with additional information/features.

ANSI Symbol

Body	Cast Bronze (ASTM B-61)
Pilot Cap	Anodized Aluminum or Brass
Internal Parts	Brass and Stainless Steel
Seals	Buna-N Standard (Optional Seals Available)
Temperature Range	-30° F to +250° F with Standard Seals
Pressure Rating	Vacuum-500 PSI Higher pressure ratings available, consult factory.
Pilot Ratio	See model number chart below
NOTES: Use -H suffix for liquid pilot media (oil, water, etc.) -B suffix must also be used with water or other corrosive pilot media (except for 324632 model where -B materials are standard).

Model Numbers
Standard Pilot Ratio

NPT Pipe Size (inches)	C_v Factor	Pilot Ratio*	Weight (pounds)	Model Number
1/4	2.56	1:1	1.4	321304
3/8	2.90	1:1	1.4	321306
1/2	3.19	1:1	1.4	321308
3/4	6.85	1:1	2.1	321312
1	12.10	1:1	3.8	321316
1 1/4	21.00	1:1	6.50	321320
1 1/2	25.80	1:1	8.00	324624
2	50.00	1:1	12.00	324632
* Internal Line Pressure vs. Minimum Pilot Pressure

High Pilot Ratio

NPT Pipe Size (inches)	C_v Factor	Pilot Ratio*	Weight (pounds)	Model Number
1/4	2.56	8:1	4.5	325104
3/8	2.90	8:1	4.5	325106
1/2	3.19	8:1	4.3	325108
3/4	6.85	8:1	4.9	325112
1	12.10	3:1	6.00	325116
1 1/4	21.00	3:1	6.80	325120
1 1/2	25.80	4:1	8.40	325124
2	50.00	2:1	13.00	325132
* Internal Line Pressure vs. Minimum Pilot Pressure

How to Order Example:

This would be a standard pilot ratio, direct pilot operated, normally open valve with 1/4" NPT ports, "-25" seal option for non-lube service, "-31" seal option for vacuum service and a "-H" option for hydraulic pilot signal activation.

Note: When ordering, always state: