Air Operated Diaphragm, Shutoff, and Diverter ValvesIncludes compact & diaphragm valves, premium heavy duty globe-style valves with visual indication and diverter valves. For corrosive and ultra-pure liquids; all require compressed air or hydraulic power for actuation.
Links to Individual Types of Compact Valves:
SERIES BSDA/BSDAM Compact valve features PTFE diaphragm with no wetted elastomers or metals. The PTFE diaphragm is backed with an elastomeric diaphragm to enhance flexibility and improve longevity. Valve bodies are available in GeonŽ brand PVC, natural unpigmented virgin polypropylene, KynarŽ brand PVDF, and PTFE. This valve is ideal for high purity processes such as deionized water, as well as ultra-harsh chemicals not compatible with elastomers. Series BSDA is available in pipe sizes 1/4" through 1˝", with threaded, socketed, and spigot ends. Please note: Series BSDA supersedes Series BSD. Dimensions are unchanged. For a web page with complete specifications on Series BSDA, please click here or on the photo.
SERIES BSR/BSRM Balanced shut-off valve for vacuum through high pressure. Normally-closed. The "balanced" aspect means that the valve will close even if the back pressure is higher than the inlet pressure. Offered in 1/2", 3/4", 1", 1˝" and 2" pipe sizes, threaded, socketed, or spigot ends, in GeonŽ PVC and Natural unpigmented virgin polypropylene. Rated to 150 PSI inlet or outlet. Cv rated 2.5 on 1/2" size, 5.0 on 3/4" size, 10.0 on 1" size, 26.0 on 1˝" size, and 28.0 on 2" size. Has minimal space requirements. For a web page with complete specifications for Series BSR, please click here or on the photo.
Premium, Heavy-Duty Globe style Air Shutoff Valves with Visual Indication
The "fail-safe" versions of these valves, Series BST Normally-Open and Series BST Normally-Closed, provide the ultimate peace-of-mind that the valve will positively return to the default position if power is lost. The others, Series BAT, BLT & F, are rugged, superior valves for specialized on/off and diverter applications. Each of these designs have over 40 years of proven field service in the nastiest, most demanding applications. If the valve absolutely, positively has to work -- as long as it is within the operational parameters -- this valve will do it. Features: - One million cycle design with bubble-tight shutoff
- Visual Position Indicator; clear acrylic wall to show if valve is in open or closed position.
- No metals in contact with liquid process.
- Patented Fail-Dry Safety Vent.
- Non-sticking PTFE shaft on most models.
- Available with limit stop option for throttling.
- Rugged construction and exacting quality standards: 100% inspection and individual testing of every valve.
- Operates pneumatically or hydraulically.
 Click here for video presentation of these advantages.
Left Click to Play, Right Click to Download
Each of the Plast-O-Matic air operated valves require a solenoid valve to control the air or hydraulic pressure that actuates the Plast-O-Matic valve. The solenoid valve must be a 3-way or a 4-way depending on the mode of operation of the Plast-O-Matic valve. The only valves that require a 4-way solenoid valve are those operated with air pressure for both opening and closing. The Plast-O-Matic industrial globe-type valve that falls into this category is Series BAT. All others utilize a 3-way solenoid valve. These solenoid valves are available as an option from Plast-O-Matic in 1/8 NPT with brass body construction. Air Actuation: In most cases air pressure is available to actuate the Plast-O-Matic valves. It is recommended to regulate the air pressure to 60 to 80 PSI. The air should be filtered and lubricated for longer valve life. No solvent vapors or detergents should be in the air supply. Hydraulic Actuation: In situations where air pressure is not available, water pressure can be used so long as the pressure available is sufficient to actuate the valve. The brass solenoid valves (3 or 4-way) will handle air or water. If the water is not clean, a filter should be used. Installation: These are extremely rugged, heavy duty valves with heavyweight construction. The piping and valve must be supported accordingly, or the piping will bow or sag and eventually fail.
Links to Individual Types of Valves:
 Series BST-NO: Normally Open Design -- These valves use air pressure to close, and a heavy duty spring (not in contact with liquid) returns the valve to the open position when air pressure is removed. 1/2" through 2" sizes are offered. These valves are for pressure or vacuum service, and are ideal for applications where only periodic shutoff is needed for maintenance, etc. Maximum liquid line pressure is 125 PSI. Throttling limit stops are available. Replaces Series EST-NO. Please click here for a web page with complete specifications for Series BST-NO; air to close/spring to open.
Series BAT: Air Pressure to Open and Air Pressure to Close -- These valves require a 4-way solenoid valve to control. 3/4" through 2" sizes are available. These valves are designed for pressure or vacuum service. The maximum liquid line pressure is 125 PSI, but the valve only requires about half that in air pressure. Throttling limit stops are available. Replaces Series EAT
Please click here for a web page with complete specifications for Series BAT
Series BLT: Liquid Line Pressure to Open and Air Pressure to Close -- These valves require liquid inlet pressure of 15 PSI to close. 1/2" through 2" sizes are offered. Because of the minimum inlet consideration, these valves are naturally for pressure service only. Throttling limit stops are available. Replaces Series ELT
Please click here for a web page with complete specifications for Series BLT
Pressure Ratings
Note: This chart and accompanying text applies only to the valves immediately above -- BST, BAT, BLT, F, & BFS -- consult the individual pages for pressure ratings for the miniature valves BSDA, BSR & TUCA. All heavy-duty air shutoffs are rated for 150 PSI inlet pressure unless rated otherwise. Acrylic air cylinders are also rated for 100 PSI, however it is recommended to use 60 to 80 PSI as a maximum. For other pressure ratings and air pressures needed see the appropriate tables for each valve design. All valves are designed to handle vacuum except for Series BLT. In piping systems where high velocity flows are present, (especially on 1˝" and 2" sizes) the closing speed of the valves should be controlled to avoid water hammer. This can be accomplished with an air flow control valve available as an option from Plast-O-Matic. Limit StopsA very simple and inexpensive throttling limit stop to control flow is available on the 2-way valves. This is adjusted in the field to a set opening and the valve will always re-open to that point. If the line pressure remains constant then the flow will also remain constant. InstallationValves should be mounted upright for best results and less strain on piping. All 2-way valves are supplied with the flow direction indicated. This should be adhered to or problems could result. For 3-way diverter valves, the common port, normally closed port and normally open port are labeled. The common port can be used as either an inlet or an outlet. Do not force the piping alignment when installing a valve or a fracture could result. The valve must be installed with no strain on the piping. Threaded Connections: It is not recommended that threaded connections be made to metal piping. If this is necessary, use extreme caution. PTFE tape or other acceptable pipe sealant should be used to effect a seal. The assembly need only be made hand tight followed by a quarter turn more with a strap wrench. Do not overtighten and do not use pipe wrenches. Socket Connections: Use extreme care with solvent welding to avoid dripping the solvent cement into the inner valve components. Flanged Connections: The valve flange bolt holes should always line upwith the bolt holes in the companion flange. The flange should not be used as a take up to compensate for a short pipe. The plastic valve flange can be butted to a metal flange providing they are in alignment.
Helpful Links:.PDF file of Catalog ASO This catalog provides complete data and sample specifications for Premium Heavy-Duty Globe Style Air Shut-off & Diverter Valves Series BAT, BLT, BST-NC, BST-NO, F, BFS. Plast-O-Matic Ball Valves Actuated valves provide excellent pressure and flow ratings, and many different options. An alternative to the heavy-duty shutoff valves shown above. Comparing Air Actuated Shut-off Valves vs. Air Actuated Ball Valves Plast-O-Matic Ball Valves offer a familiarity, convenience and price advantage over the heavy-duty Air Operated Shutoff Valves shown on this page -- But there are times when these valves are preferable, particularly for troublesome applications where, for whatever reason, a ball valve may have trouble closing. Pilot-Operated Solenoid Valves Where pneumatic or hydraulic power is not available, this electrically-actuated valve offers excellent flow rates. A 5 PSI pressure differential is required for successful use. Pilot-Operated Solenoid Valves Where pneumatic or hydraulic power is not available, this electrically-actuated valve offers excellent flow rates. A 5 PSI pressure differential is required for successful use. Plastic & Elastomeric Materials Basic descriptions, properties, advantages of the "alphabet soup" of plastics and elastomers. PVC or CPVC? Buna-N or EPDM? ...click this link for an easy-to-understand tutorial. Request for Quotation Whether a standard product or completely custom, this is the place to start. Provide as much info as you know, and our Technical staff can help you select the right valve for the job.
| 
