1/4˝ and 3/8˝ Sizes
Soft Seal Type
Vacuum to 250 PSI
(Subject to Pressure Limitations on Certain Models)
Threaded Body or Subplate Mounted Models
All valves shown on these two pages are assembled from the same basic body size, although the 3/8˝ models have larger internal passages for greater air flow. Subplate mounted valves are listed in the model selection chart but are not illustrated.
For compressed air or inert gases at pressures from vacuum to 250 PSI, subject to limitations described on the next page for certain models. Spool-type 4-way valves for operation of double-acting cylinders or reversible air motors. The valve will stand full pressure on any port, so it may be used as a 5-way valve or it may be used for 2-way or 3-way service by plugging unused ports.
Valve bodies are pressure-cast aluminum alloy; end caps are steel, aluminum, or zinc; spools are machined from aluminum bar stock and processed to a glass-hard surface finish; springs are plated steel or stainless steel; O-rings are Viton® rubber.
Three options are offered in the model chart, each using the same basic body size: second column = 1/4˝ flow capacity with 1/4˝ NPTF body threads; third column = 3/8˝ flow capacity with 3/8˝ NPTF body threads; fourth column = 3/8˝ flow capacity with unthreaded port holes through base of valve; these models must be mounted on a subplate to which plumbing connections are made. Subplate must be ordered separately.
Model Selection Chart for 1/4˝ And 3/8˝ Valves
Find desired valve type in 1st column. Select appropriate model number in 2nd, 3rd, or 4th column. Subplate valves (4th column) have base O-ring seals furnished.
Type | Model 1/4˝ NPTF Threads | Model 3/8˝ NPTF Threads | Model 3/8˝ for Subplate | Description |
Sing. Sol. | SO2 – 24VDC STOCKED ITEM | SO3 – 120VAC STOCKED ITEM | SO3P | 2-pos., spring returned |
Sing. Sol. | SO2 – 120VAC STOCKED ITEM | SO3OL – 120VAC STOCKED ITEM | ||
Sing. Sol. | SO2 – 12VDC STOCKED ITEM | SO3O – 120VAC STOCKED ITEM | ||
Sing. Sol. | SR2 | SR3 | SR3P | 2-pos., pilot returned |
Double Sol. | SS2 | SS3 STOCKED ITEM | SS3P | 2-pos., no springs |
Double Sol. | SY2 | SY3 STOCKED ITEM | SY3P | 3-pos., spr. cent., closed center |
Man. Lever | HE2 STOCKED ITEM | HE3 STOCKED ITEM | HE3P | 2-pos., friction positioned |
Man. Lever | HO2 | HO3 | HO3P | 2-pos., spring returned |
Man. Lever | HY2 STOCKED ITEM | HY3 | HY3P | 3-pos., spr. cent., closed center |
Man. Lever | HD2 STOCKED ITEM | HD3 STOCKED ITEM | HD3P | 3-pos., 3-detent, closed center |
Pilot Oper. | RR2 STOCKED ITEM | RR3 | RR3P | 2-pos., double pilot, no springs |
Pilot Oper. | RO2 STOCKED ITEM | RO3 STOCKED ITEM | RO3P | 2-pos., spring returned |
Pilot Oper. | RY2 | RY3 | RY3P | 3-pos., spr. cent., closed center |
Button Bleed | D2 | D3 | D3P | 2-pos., no springs |
Cam | CO2 | CO3 | CO3P | 2-pos., spring returned |
Cam | CR2 | CR3 | CR3P | 2-pos., remote pilot returned |
Foot Pedal | FO2 | FO3 STOCKED ITEM | FO3P | 2-pos., spring returned |
Foot Pedal | FR2 | FR3 | FR3P | 2-pos., remote pilot returned |
Treadle | TE2 STOCKED ITEM | TE3 | TE3P | 2-pos., friction positioned |
Treadle | TO2 | TO3 | TO3P | 2-pos., spring returned |
Treadle | TY2 | TY3 | TY3P | 3-pos., spr. cent., closed center |
Treadle | TD2 | TD3 | TD3P | 3-pos., 3-detent, closed center |
Palm Button | KE2 STOCKED ITEM | KE3 | KE3P | 2-pos., friction positioned |
Palm Button | KO2 | KO3 STOCKED ITEM | KO3P | 2-pos., spring return to “out” |
Palm Button | KR2 | KR3 | KR3P | 2-pos., pilot returned to “out” |
Palm Button | KD2 | KD3 | KD3P | 3-pos., detent positioned |
Palm Button | KD2Q | KD3Q | KD3PQ | 2-pos., detent positioned |
SO2
SS2
SOLENOID VALVES. Pilot-operated solenoid type. For pressure from 160 PSI to 50 PSI on spring models and down to 25 PSI on no spring models. If operated on pressure above or below this range, or on vacuum, valve must be converted to external pilot operation. 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. Inrush current is 0.36 amps, holding current is 0.23 amps at 120 volts, 60 Hz. Current at other voltages is in proportion. DC coils draw 9 watts at all voltages. Pigtail leads on solenoids are standard; DIN connectors are also available. Converting to external pilot operation: Remove the pilot operator from the main valve body. Leave gasket as is and rotate the solenoid operator 180° and remount. This will put the valve nameplate on the opposite side from that shown in photos. Connect a steady source of 50 to 160 PSI air to pilot port on top of valve.
Size of double solenoid model: 5-3/4˝ ˣ 2-1/2˝ ˣ 3-3/4˝ high. Weight 2-1/2 lbs.
HE2
MANUAL LEVER. Pressure range is vacuum to 250 PSI. Handle on 2-position spring models is offset opposite to position shown in photo. On 3-position models handle is vertical in neutral. Size: 6-1/4˝ ˣ 2-1/4˝ ˣ 4-5/8˝ high (includes handle). Weight approximately 1-1/4 lbs.
RR2
PILOT OPERATED. Vacuum to 250 PSI on main ports. Pilot pressure is maximum 250 PSI to 50 PSI minimum on spring loaded models or 20 PSI on no-spring model. Size: 4-7/8˝ ˣ 2-1/4˝ ˣ 1-7/16˝ high. Weight 1 lb.
D2
BUTTON BLEEDER. Furnished in 2 or 3-position models. Limited to compressed air of 20 to 250 PSI. Not suitable for liquids or vacuum. Two bleed buttons are furnished in valve end caps. These may be remotely mounted on hose extensions. A momentary pressure on a bleed button causes main spool to shift. Size: 6˝ ˣ 2-1/4˝ ˣ 1-5/16˝ high. Weight 1 lb.
CO2
CAM ACTUATED. Pressure range is vacuum to 250 PSI. Requires a force of 20 lbs. and a travel of 17/32˝ to fully shift spool. Has built-in over-travel of 1/32˝. Roller may be taken off and remounted at right angle to position shown. Size: 6-1/8˝ ˣ 2-1/4˝ ˣ 1-1/2˝ high. Weight 1-1/4 lbs.
FO2
FOOT PEDAL. For toe actuation. Pressure range is vacuum to 250 PSI. Size: 8˝ ˣ 2-1/4˝ ˣ 2-9/16˝ over pedal. Weight 1-1/4 lbs.
TE2
FOOT TREADLE. For toe and heel operation. Pressure range is vacuum to 250 PSI. Size: 8˝ ˣ 2-1/4˝ ˣ 3-7/8˝ high over treadle. Weight 1-1/2 lbs.
KO2
PALM BUTTON. Requires 5 lbs. force on Models KE and KR, 12 lbs. on Model KO. Pressure range is vacuum to 250 PSI. Can be panel mounted by specifying Suffix R. Size: 6-1/4˝ ˣ 2-1/4˝ ˣ 1-1/2˝ high. Weight 1-1/4 lbs.