Characterized Control Valves

Series: EK – Pneumatic
EE – Electric
Sizes: 1/2″- 4″
Ends: Flanged
Type(s): Single Seat Globe, or Needle Type
Shaft Seals: PTFE Bellows
Body Seals: EPDM, FKM (Viton®), FEP

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EE/ EK Series Characterized Control Valves

The Chemline EE/ EK Series Characterized Control Valves provide extremely precise flow control of aggressive fluids. Valves flow characteristics (Cv vs. lift) follow theoretical linear or equal percentage curves through the entire range of stem travel. This is accomplished with precision made replaceable seats and plugs in a wide variety of Cv values. The PTFE bellows shaft seal provides almost frictionless stem movement and provides over 10 years of maintenance-free operation on aggressive chemical services.

Electrically Actuated (EE Series) Specs:

Power Supply: 115 VAC/50/60Hz
Duty Cycle: 50%
Enclosure Rating: NEMA 4X, IP 65 with temperature
and load protection

Current Draw: 0.23 amps
Maximum Power Consumption: 30 VA

Adjustable Opening/Closing Times:
½” to 2″ valves: 32 to 62 sec.
2-½” to 4″ valves: 55 to 111 sec

Control Input: 0-10 V or 0-20mA

Optional Voltages: 230 VAC/50/60Hz, 24 VDC or 24VAC
4-20mA Retransmit

Pneumatically Actuated (EK Series) Specs:

Actuator Housing: Glass reinforced Polyester
Actuator Springs: Coated SS
Stem and Mounting Hardware: 316 SS

Control Air: Max 90 psi
Operation: Reversible, closed or opened by spring or double acting

Mounting Position: Optional
Air consumption: 0.35-1.0 l/lift
Stem Lift: 15 mm(½” and ¾”), (1″to 2″),
40 mm (2½” to 4″)

Working Pressure:150 psi

✓ Precise and Sensitive
Predictable and repeatable control of corrosive fluids. These valves respond smoothly and quickly to small changes in signal. Deadband and hysteresis is negligible
✓ Changeable Plugs and Seats
Valve CV may be changed later if fluid conditions change
✓ Low Maintenance
✓ Abrasion Resistant
Have outperformed metal valves on aggressive and crystallizing services
✓ High Rangeability
Valve characteristics (flow rate vs. stem lift) follows the theoretical curves through the entire range of opening including extreme ends of travel
✓ Class IV Leakage
Rate is 0.01% of rated capacity according to ANSI B16.104-1976
✓ Large Choice of Cv Values
H18 standard Cv’s from 0.11 to 105.00, Smaller Cv’s down to 0.003 are also available