AERCO CXT-E Retrofit Kit - Manual (Page 24)

ECS and CXT-E Retrofit Instructions Kit # 27004-TAB
Technical Instruction Document TID-0141_0A
12/30/2014 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 Page 24 of 76
3. RECOMMENDED REPLACEMENT OF VALVE ASSEMBLY
PARTS
As mentioned in section 2.5, AERCO recommends that the Valve Seat and Packing be replaced
on the Valve Body, prior to installing the ECS Retrofit Kit items described in Section 4. Valve
Bodies which previously utilized Self-Contained Actuators must be modified to include new
additional items such as: a Valve Top, Valve Stem and a Packing Nut.
Refer to the applicable sections which follow for the Valve size and Actuator type used on your
system.
NOTE
The procedures in sections 3.1 and 3.2 which follow, assume that the
previously installed Pneumatic, Electro-Hydraulic or Self-Contained
Actuator has already been removed.
3.1 VALVES PREVIOUSLY EQUIPPED WITH PNEUMATIC OR ELECTRO-HYDRAULIC
ACTUATORS
The parts replacement items required for Valve Bodies which previously used Pneumatic or
Electro-Hydraulic Actuators are basically identical. Only minor variations exist for the various
Valve Body sizes. The Valve Body components for 1.00” to 2.00” and 2.50” to 4.00” are shown in
Figures 3-1 and 3-2, respectively.
3.1.1 Valve Disassembly Procedure
Proceed as follows:
NOTE
Steps 1 through 5 which follow apply to all valve sizes shown in Figure 3-1
and 3-2.
1. Remove the Hex Nut (17) from the Valve Body Shaft.
2. Remove the Packing Nut (18) and Packing Assembly (20).
3. Remove the Bolts or Cap Screws (14) securing the Valve Top (21).
4. Remove the Valve Top (21) and Valve Top Gasket (13).
5. Carefully lift out the entire Shaft /Seat/Piston Assembly.