APTech AP3708 User Manual
A. general information, B. installation
687 Technology Way
Napa, CA 94558
Phone: (707) 259-0102
FAX: (707) 259-0117
www.aptech-online.com
Manual 15000007 Rev 3
Page 1 of 2
Operation Manual
Pneumatic Diaphragm Valves (normally open)
(Models AK/AP/AZ3080, AK/AP/AZ3580, AK/AP/AZ3585, AK/AP/AZ4580, and AP3708)
A. General information
AP Tech normally open (NO) pneumatic diaphragm valves are used in gas delivery systems to
control gas flow. Many different models are available with different pressure ratings, flow
capacities, and porting configurations.
Refer to the appropriate catalog data sheet for specific product information.
B. Installation
1. Prior to installation, verify that the operating characteristics of the valve as described
below are appropriate for the system in which it will be installed.
a. Verify the materials of construction are compatible with the intended process gas.
b. Verify the pressure and temperature ratings are acceptable for the intended application.
c. Verify the actuation pressure supply is appropriate.
d. Verify that the flow capacity (C
v
) of the valve is appropriate for the application.
2. Inspect the valve to determine the flow path through the valve and how the valve will be
installed in the system.
a. An inlet (upstream) port is defined as a port connected to the region below the valve seat and
may be labeled with an “IN” marked into the body near the port.
b. An outlet (downstream) port is defined as a port connected to the region above the seat and
below the diaphragm. The outlet port is usually not labeled, but may be marked “OUT”.
c. The traditional flow direction is inlet to outlet, but AP Tech valves may be employed in
either traditional flow direction or the reverse.
d. On Series DV Monoblock valves the port that is common with the block valves is marked
with a “
C
”. No other marking is shown. Refer to Technical Bulletin 205 has schematics of
the monoblock configurations and more detailed information.
Document Outline
- A. General information
- B. Installation
- 1. Prior to installation, verify that the operating characteristics of the valve as described below are appropriate for the system in which it will be installed.
- a. Verify the materials of construction are compatible with the intended process gas.
- b. Verify the pressure and temperature ratings are acceptable for the intended application.
- c. Verify the actuation pressure supply is appropriate.
- d. Verify that the flow capacity (Cv) of the valve is appropriate for the application.
- 2. Inspect the valve to determine the flow path through the valve and how the valve will be installed in the system.
- a. An inlet (upstream) port is defined as a port connected to the region below the valve seat and may be labeled with an “IN” marked into the body near the port.
- b. An outlet (downstream) port is defined as a port connected to the region above the seat and below the diaphragm. The outlet port is usually not labeled, but may be marked “OUT”.
- c. The traditional flow direction is inlet to outlet, but AP Tech valves may be employed in either traditional flow direction or the reverse.
- d. On Series DV Monoblock valves the port that is common with the block valves is marked with a “C”. No other marking is shown. Refer to Technical Bulletin 205 has schematics of the monoblock configurations and more detailed information.
- 3. Install the valve using the appropriate method described below.
- a. For tube stub connections, weld connectors or other components to the tube stubs per standard industry practice (reference SEMI standard F78).
- b. For metal face seal connectors, assemble connections per standard practice described by fitting supplier (typically 1/8 turn past fingertight).
- c. For compression-type connectors, insert the tube into the fitting until it stops. Tighten the fitting by applying 1-1/4 turns of nut rotation.
- d. Most valves can be attached to panels or mounting plates using the 10-32 or M5 female thread mounting holes located in the bottom of the body (valves with M5 mounting holes will be marked with a “5” on the bottom of the body). Special configuration...
- 4. Connect a nitrogen or clean dry air actuation pressure supply to the valve actuator connection. The connection may be a 1/8 NPT female thread, 10-32 female thread, or an M5 female thread depending on the valve model.
- 5. After installation, perform a leak test of all connections and welds per standard industry practice (reference SEMI standard F1).
- 1. Prior to installation, verify that the operating characteristics of the valve as described below are appropriate for the system in which it will be installed.
- C. Operation