7
ES-A-ACV-LF984GD 2115
© 2021 Watts
LEAD FREE
*
ACV Standard Components - Series LF984GD
Viton™ is a trademark of The Chemours Company FC, LLC
Parts List
* The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
Specifications
Model 22
3-Way Accelerator Control
Size: ½"
The Model 22 3-Way Accelerator Pilot is a diaphragm actuated
control with three separate ports: Supply, Common and Exhaust.
It is normally installed in the pilot control circuit of an Automatic
Control Valve, with the supply port connected to upstream
pressure, the common port connected to the Main Valve cover
chamber, and the exhaust port vented either downstream or to
atmosphere. Its large
1/2
" ports offer increased capacity, and allow
smaller ported devices, such as a 3-Way Solenoid, Float or Altitude
Pilot, to operate the Main Valve open and closed.
When the cover of the Accelerator Pilot is de-pressurized, the main
valve cover chamber is connected to upstream pressure, causing
the valve to close drip tight.
When the cover of the Accelerator Pilot is pressurized, the main
valve cover chamber is vented downstream (dry drain) or to
atmosphere (wet drain), causing the valve to open.
The Model 22 is designed with an integral orifice to provide a
constant source of pressure for valve regulation, when modulating
features are desired in addition to normal On/Off operation.
Size:
1/2
"
Body Material:
C87800 Silicone Bronze (std)
CF8M Stainless Steel (opt)
Elastomers:
Buna-N
(std)
Viton™
(opt)
EPDM
(opt)
Inlet Pressure Rating:
400 psi maximum
Model LF22
*Included in Repair Kit
Top View
Bottom View
2
3
6
4
5
7
8
9
10
11
12
1
Supply
Supply
Common
Exhaust
Exhaust
Supply
Common
Accelerator Cover
Accelerator Port
Item
Description
1
Nut
2
Lock Washer
3
Upper Diaphragm
4
Diaphragm*
5
Lower Diaphragm Washer
6
Stem
7
Spool
8
O-Ring*
9
O-Ring*
10
Retainer
11
Lock Washer
12
Nut
