1½˝ and 2˝ Sizes
Soft Seal Type
Vacuum to 250 PSI
(Subject to pressure limitations on some models)
Threaded body models in 1½˝ size only. Subplate models will mount on a choice of subplates with 1½˝ or 2˝ NPTF connections.
NOTE: High-capacity 3˝ air valves are available with solenoid, pilot, manual, and button bleeder operators. Ask for the data sheet.
The 1½˝ and 2˝ valves are identical in size and flow rating. The only difference is in connection size. Valves with pipe threads in the body, as in the photos on the next page, are supplied only in 1½˝ NPTF. They are listed in the second column of the model chart. Subplate type valves, as listed in the third column of the chart, can be mounted on a choice of subplates having 1½˝ or 2˝ NPTF threads.
For compressed air or inert gases at pressures from vacuum to 250 PSI, subject to limitations described on the next page for certain models. These are spool-type 4-way valves, which may also be used for 2-way, 3-way, or 5-way service by plugging all unused ports. Full pressure may be applied to any port. O-ring seals between all ports give leak-tight operation. Flow capacity is equal to the area of a 1-3/8˝ diameter hole.
Solenoid, manual lever, and button bleeder models have AAA 3/8˝ piggyback valves to control the shifting of the main spool. Air pressure for shifting is derived from the main inlet port, except when necessary to convert to external pilot operation. No piggyback operator is used on Models GR and GY. Their spools are shifted by pilot pressure from a remote location.
The valve body and end caps are aluminum alloy. The spool is machined from aluminum bar stock and processed for a glass-hard surface finish. The O-ring seals are buna-N rubber. Springs are not used in the main body; the reference to springs in the model chart description refers to piggyback operator action.
Model Selection Chart for 1½˝ and 2˝ Valves
Find the desired valve type in the first column. Select the appropriate model number in the second or third column. Subplate valves (3rd column) have base O-ring seals furnished; the subplate must be ordered separately.
| Type | Model No. 1½˝ NPTF Threads | Model No. Subplate Mounted | Description |
| Single Solenoid | SO12 | SO16P | 2-position, spring returned |
| Single Solenoid | SR12 | SR16P | 2-position, pilot pres. returned |
| Double Solenoid | SS12 | SS16P | 2-position, no springs |
| Double Solenoid | SY12 | SY16P | 3-pos., spring cent., closed center |
| Manual Lever | HE12 | HE16P | 2-position, no spring, friction pos. |
| Manual Lever | HO12 | HO16P | 2-position, spring returned |
| Manual Lever | HY12 | HY16P | 3-pos., spring cent., closed center |
| Manual Lever | HD12 | HD16P | 3-position, 3-detent, closed center |
| Button Bleeder | D12 | D16P | 2-position, no springs |
| Remote Pilot | GR12 | GR16P | Double pilot, 2-position, no springs |
| Remote pilot | GY12* | GY16P* | 3-pos, pres. cent., closed center |
*The remote valve (not furnished) for controlling Model GY must have a regenerative spool (both cylinder ports connected to pressure in the center position).
Single Solenoid
Double Solenoid
SOLENOID VALVES. Pilot-operated solenoid type. For pressure of 50 PSI minimum to 160 PSI maximum. For operation on line pressure above or below this range or on vacuum, the valve must be converted to external pilot operation. See below. All standard voltages, both AC and DC, can be furnished. All coils may be used for continuous duty. They have a power requirement of 11 watts. The inrush current is 0.36 amps, and the holding current is 0.23 amps at 120VAC and 60 Hz. Current at other voltages is in proportion. DC coils draw 9 watts at all voltages.
Converting to external pilot operation: Remove the complete piggyback valve and install a 1/16˝ NPTF pipe plug in the main body. The valve should then be remounted in the same position, and a 50 to 160 PSI pressure source should be connected to the pilot port on the main body (not on the piggyback operator). Pigtail leads on solenoids are standard; DIN connectors are also available.
Size: 13-1/2˝ ˣ 6-3/4˝ ˣ 9-1/2˝
Weight: Single Solenoid, 27-3/4 lbs. Double Solenoid, 29-1/2 lbs.
Manual Lever
MANUAL LEVER VALVES. Requires very little force on the lever of the 1/4˝ AAA control valve mounted piggyback on top of the main body. Pressure range 50 to 250 PSI on main ports. Will work at lower pressure or vacuum if converted to external pilot operation as described above for solenoid valves.
Size: 13-1/2˝ ˣ 6-3/4˝ ˣ 10-1/4˝ over handle
Weight: 27-1/4 lbs.
Button Bleeder
BUTTON BLEEDER VALVE. The bleeding buttons on the piggyback operator can be manually pressed to shift the main spool, or they can be removed and mounted on extensions to operate the valve from a remote point. The pressure range on the main ports is 50 to 250 PSI. If converted to external pilot operation, as detailed above for solenoid valves, it will work at lower pressures or vacuums.
Size: 13-1/2˝ ˣ 6-3/4˝ ˣ 7˝
Weight: 27 lbs.
Remotely Piloted
REMOTELY PILOTED VALVES. No piggyback operator is used; the main spool is shifted by 50 to 250 PSI pressure signals from a miniature control valve located remotely (not furnished). The remote valve can be solenoid, manual, cam, etc., but for the operation of Model GY, it must have a “regenerative” spool, in which both cylinder ports are connected to pressure when the spool is centered. Pressure range of the main body and spool is vacuum to 250 PSI.
Size: 13-1/2˝ ˣ 6-3/4˝ ˣ 5-1/2˝
Weight: 27 lbs.