Page 128 - Peter Paul 2019 Catalog

HAZARDOUS LOCATION VALVES
Series 20 >> Model E21
Hazardous Location — 2-Way Normally Open Valve
Peter Paul explosion proof valves are used where fire or explosion hazards exist due to the presence of flammable gases or vapors, flammable liquids, combustible dust, or easily ignitable fibers. Hazardous Location valves are recommended, or in some cases compulsory, where a high level of protection from explosion is required.
• Heavy duty and made of stainless steel.
• A real workhorse with proven performance.
• It has the greatest amount of options available of all the valves. • Wide range of orifice sizes from 1/32′′ to 1/8′′.
Note: This valve also available as an operator. Refer to following page.
OPERATING CONDITIONS
Media: Air, water, and other fluids compatible with standard Buna seals. Hot water, steam gasoline, and many oils require special seal materials. (Series 20 pressure ratings may change due to the viscosity of the liquid.)*
Valve Temperature Range: Standard Valves – 0°F (-18°C) to 104°F (40°C) ambient;
0°F (-18°C) to 150°F (65°C) media. Optional Valves – can tolerate much higher or much lower ambient and media temperatures.*
Maximum Operating Pressure Differentials: See table on proceeding page. Burst Pressure: 5000 PSI
Leakage: Bubble tight for standard valves.
Vacuum: To 5 Microns*
ELECTRICAL CHARACTERISTICS
Coil Voltage: 6 to 825V AC 60 HZ. and 5 to 720V AC 50 HZ. — 1.8 to 265V DC
Nominal Power: AC — 7.3 Watts DC — 9.5 Watts
Coil Construction: Molded Class F with third wire ground (Std.), Class H or Potted (Opt.) Typical Response Time on Air: 4 – 16 Milliseconds
Operating Speed: Up to 600 CPM
Duty Cycle: Continuous
MECHANICAL CHARACTERISTICS
Body: Stainless Steel (Std.)
Internal Components: Stainless Steel
Elastomers: Nitrile (Buna) (Std.). Many other elastomers available.*
Orifice Diameter: See table on proceeding page.
Porting: 1/8” and 1/4” NPT (others ports available).
Housing: Flame-Proof construction with 1/2′′ NPT conduit
DE-ENERGIZED (OFF)
OUT
IN
ENERGIZED (ON)
OUT
IN
Listings: Valves are UL listed and CSA certified for Hazardous Locations — Class I, Div 1, Group C and D – Class II, Div 1, Group E, F, and G; Div 2, Groups A, B, C, D, E, F, and G.
Life Expectancy: Millions of cycles, depending on application, lubrication, etc. Valve Weight: 1.50 lbs
Repair Kits: See table on proceeding page.
Options: Alternate Port Locations, Metering, Manual Override, Alternate Elastomers*
* Consult representative or factory for options and specifications.
IN
OUT
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