Normally-Closed Diaphram Seal Solenoid Valves

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Normally-Closed Diaphragm Seal Solenoid Valves SUPERSEDED by Series EASMT & EASYMT PTFE Bellows Design

diaphragm seal solenoid valve uses DuPont brand PTFE shaft for stick-free operation

Features:

Effective January 1, 2006 the EASM/EASYM and EASMD/EASYMD are discontinued. Series EASMT & EASYMT, REPLACES the valves shown on this page. EASMT & EASYMT use a dynamic PTFE bellows seal in lieu of rolling diaphragms. The PTFE bellows line replaces all the different seal configurations, is suitable for all types of solutions, and all types of service. Same range of sizes. The information shown on this webpage is provided for reference only.
Million cycle bubble-tight design.
No metal parts in wetted area.
Rugged molded construction.
PTFE shaft eliminates friction and sticking problems.
Patented Fail-Dry vented design.
Resistant to atmospheric corrosion.
Diaphragm design eliminates crystallization problems.
Molded corrosion-resistant coil assembly.
IP-54/Nema 4 water and dust tight enclosure.

Mode of Operation:

Normally closed (energize to open).

Service:

Pressure and drain only. (specify)

Application:

Salt solutions, caustics, and ultra-pure liquids.

Dimensions:

Series EASMT & EASYMT, REPLACES the valves shown on this page. EASMT & EASYMT use a dynamic PTFE bellows seal in lieu of u-cups or rolling diaphragms. The PTFE bellows line replaces all the different seal configurations, is suitable for all types of solutions, and all types of service. Same range of sizes. The information shown on this webpage is provided for reference only.

Specifications:

Pressure Ratings & Flow Rate Considerations

The pressure ratings shown in the table above are maximum values. The valve will open at the maximum listed inlet pressure and it will close at the maximum listed back pressure. The valve may not operate properly, however, when the maximum inlet and back pressure values are experienced at the same time. The governing parameter is velocity in feet per second (ft/sec) through the valve. Velocity is determined by pipe size and flow rate. To determine if your application exceeds the velocity tolerances for this valve, refer to the chart below.

Flow Rate and Equivalent Velocity
Valve Pipe Size	Flow Rate at 5 feet per second velocity	Flow Rate at 10 feet per second velocity
0.50" (½ in.); NPT/BSP	3.4 GPM 17.4 LPM	6.8 GPM 34.8 LPM
0.75" (¾ in.); NPT/BSP	6.4 GPM 32.7 LPM	12.8 GPM 65.4 LPM
1.00" (1 in.); NPT/BSP	10.8 GPM 55.2 LPM	21.6 GPM 110.4 LPM

If your flow rate (in Gallons Per Minute or Liters Per Minute) is below the 5 ft/sec column for your pipe size, the velocity is within plastic piping industry standards and the valve will function properly.

If your flow rate indicates a velocity above the accepted standard of 5 ft/sec but less than 10 ft/sec, Plast-O-Matic does not guarantee proper operation. The valve may still function, but if it emits a chattering sound, discontinue use. At fluid velocities above 5 ft/sec you must consider water hammer in the system design.

If your flow rate is higher than that listed in the 10 ft/sec column for your pipe size, this valve must not be used in your application.

ORDERING INFORMATION:

Note: For complete information request catalog page.

EAS  (Y)    MD    2        EP       14         W20  - PV (Specify Voltage)
 
     Y-Reduced    Size     Seals    Orifice    Coil   Body Material
 
     Orifice      2-1/4    EP-EPDM  14-0.470   G20    PV-PVC (Geon®)
 
     1/4-1/2      4-1/2    only     16-0.500   W20    CP-CPVC (Corzan®)
 
     sizes        5-3/4             22-0.656   E20    PP-Polypro(20% Glass Filled)
 
                  6-1                          G58    PF-PVDF (Kynar®)
 
                                               E58

Helpful Links:

Series EASMT & EASYMT 2-way Molded solenoid valves that replaced the valves shown on this page. New design uses a dynamic PTFE bellows seal in lieu of u-cups or rolling diaphragms. The PTFE bellows line replaces all the different seal configurations, is suitable for all types of solutions, and all types of service. Range of sizes is 1/2", 3/4" & 1".

Determining Amperage for a Plast-O-Matic Solenoid Valve This is a technical document in Microsoft Word format that explains how to calculate the amperage required for Plast-O-Matic AC or DC coils.

Overview of the Entire Solenoid Valve Line, which may be the page you were on prior to this one. Provides key items for quick comparison and selection.

Series EAST, Compact valve with outstanding performance. Uses PTFE bellows dynamic seal, 1/4" & 1/2" sizes.

Series EASY-NO, Normally-open, direct acting valve in 1/4" & 1/2" sizes.

Series PS, Pilot-operated valve with outstanding pressure and flow performance. Uses PTFE bellows dynamic seal. Complete sizes 1/2" through 3", requires 5 psi differential for proper operation.

Series THP, Compact 3-way (aka diverter) solenoid valve.

Series WCM, Compact, direct-acting 2-way valve with stainless steel & silver wetted core. (this is the only Plast-O-Matic solenoid valve with a wetted metal core). Offers an outstanding combination of price and performance.

Pressure Drop Calculator How will a particular solenoid valve affect the pressure in your piping system? If you know your approximate flow rate in gallons per minute, this calculator will tell you your pressure drop, or "Delta P."

Plast-O-Matic Valves, Inc.
1384 Pompton Avenue
Cedar Grove, NJ 07009 USA
Voice: (973) 256-3000
Fax: (973) 256-4745

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Kynar® is a registered trademark of Arkema.,
Corzan™ is a trademark of Noveon, Geon® is a registered trademark of the Geon Company.

FAIL-DRY® is a registered trademark of Plast-O-Matic Valves, Inc.