Ball Valves

Compact Full Port Glass Ball Valves Resist Corrosive Chemicals, Avoid Contamination, and Allow Easy Observation of Fluid Flow

The Lab-Crest® Glass Ball Valve is a unique flanged type shutoff valve with all "wetted" parts made of high quality borosilicate glass, ceramic alumina, and PTFE. The valve's rugged construction makes it ideally suited for use in applications involving corrosive chemicals, both liquids and gases. Its contamination resistant glass surfaces work extremely well in pharmaceutical and food processing, where avoiding product build-up and contamination are major concerns. The transparent quality of the glass provides full visibility and allows the valve to serve as a sight glass in any process requiring observation of the fluid flow.

Design Features

• Standard port

• Thermal shock resistant

• Wetted parts inert to most chemicals

• Long life

• Noncontaminant glass surfaces

• Quarter-turn operation

• TFE seat for positive sealing

• Easy installation and operation

• Serves as sight glass

• Carbon steel flanges

• Stock sizes: 1", 1-1/2" and 2"

Caution: Glass components are not recommended for either hot or strong alkalies, fluorine, hydrofluoric acid, steam or water over 200°F (93°C). Glass components should be periodically inspected for signs of wear. Erosion, stress cracks, nicks or deep scratches provide early warning for glass replacement. With certain fluids the glass may erode evenly, so that wear is not visibly noticeable. If wear is detected, the component should be replaced in order to eliminate the potential cause of breakage.

Engineering Specifications

	Materials of Construction	Service Pressure-Temperature Ratings for Glass Ball Valves
	Ball & Body: Chemically resistant low alkali borosilicate glass	Liquid Pressure Rating Valve Size -40°F to 212°F At 350°F 1" 115 PSIG 75 PSIG 1-1/2" 75 PSIG 50 PSIG 2" 70 PSIG 46 PSIG
	Flanges: Carbon steel
	Valve Stem: Chemically resistant 97% fused alumina
	TFE Seats, Flange Gaskets, Stem Seal, Bearing and Sleeve
	TFE flange allows direct mating to flanges in 150 lb. ASA metal or flanged glass piping systems.

Parts List
	1. Handle Retainer 2. Handle 3. Bonnet Plate 4. Bonnet Plate Nut 5. Bonnet Plate Bolt 6. Stem 7. Stem Seal 8. Tie Screw 9. Flange 10. Ball 11. Seat 12. Flange Gasket w/two washers 13. Support Nut 14. Lower Stem Sleeve 15. Support Retainer 16. Upper Stem Sleeve 17. Stem Bearing 18. Bonnet Plate Washer 19. Body 20. Flange Bushing
Dimensions
1" 1-1/2" 2" A 2-11/16 3-13/16 4-3/16 B 1-11/32 1-29/32 2-3/32 C 4-1/4 5 6 D 3-1/8 3-7/8 4-3/4 E 7/8 1-5/16 1-9/16 F 5/8 17/32 3/4 G 11/32 11/32 11/32 H 4-3/4 6-1/4 6-1/4 J 3-1/4 4-1/2 4-9/16 K 1-5/8 2-1/4 2-1/4 L 3-1/4 4-1/2 4-1/2 M 3-1/8 4-1/8 4-3/4