Button Valve
Model: 23R1-L8-F (Resetting) Part No. QY429
Model: 23R1-L8-D (Orientation Latching) Part No. QY430
Port Thread: P & A Ports: G1/4"
Full Technical Specification (English Version)
Button valve 23R1‑L8‑F(resetting) QY429 is a 3/2‑way spring automatic‑reset manual push‑button component, belonging to critical Pneumatic Parts . It is widely matched with Power Pack Unit to realize air circuit on‑off and signal switching for pneumatic control loops. Installed on drilling, petroleum and general industrial Machine, this mechanical button valve sends manual control signals to actuate pneumatic actuators. It fits for new‑equipment assembly, pneumatic system upgrade and aftermarket replacement of worn Pneumatic Parts。
General Overview
These are 3/2 way push-button pneumatic directional control valves, widely used on oil drilling rigs, geological exploration rigs, construction machinery and heavy-duty equipment for pneumatic remote start/stop control, standard OEM parts for domestic petroleum machinery equipment.
Port configuration: P (Inlet), A (Outlet), O (Exhaust), all with G1/4" (BSPP parallel thread) female ports; nominal bore DN8, one-piece die-cast aluminum valve body.
Model Code Explanation
- 23: 3/2 way valve (2 positions, 3 ports: P supply, A working output, O exhaust)
- R1: Flat mushroom head push-button manual actuation structure
- L8: Threaded connection type, nominal bore DN8
- F: Resetting = Spring return type (Part No. QY429)
- D: Orientation Latching = Mechanical detent latching type (Part No. QY430)
1. 23R1-L8-F (QY429) Spring Automatic Reset Type
Working principle: Normally closed in idle status
At rest: Port P blocked, Port A connected to exhaust port O.
When pressed: Air circuit P→A opens for air supply; releases instantly with spring rebound once hand is released, circuit cuts off and resets automatically.
Alias: Momentary push button valve, snap-action push button valve
Drawing No.: QY429 (OEM stock code for petroleum machinery)
2. 23R1-L8-D (QY430) Latching Position Type
Working principle: Push to lock, push again to release (toggle latching design)
1st press: Spool locked mechanically to maintain continuous P→A air supply, no rebound after releasing hand.
2nd press again: Unlock mechanism triggers, spool resets; P port shuts off, A port vents to O exhaust.
Alias: Latching push button valve, maintained-action push button valve
Drawing No.: QY430 (OEM stock code for petroleum machinery)
Unified Technical Parameters (Both models share identical dimensions & threads, only internal spring/latching structure differs)
Item Specification
Port Size P Inlet, A Outlet, O Exhaust: All G1/4" (BSPP 1/4") female thread
Nominal Bore DN8mm
Effective Flow Area ≥20mm²
Working Medium Filtered dry compressed air
Operating Pressure 0.15~0.8MPa (1.5~8 bar)
Ambient Temperature -25℃ ~ +80℃ (no icing condition)
Operating Push Force ≤30N (light manual operation)
Allowable Leakage Rate ≤50cm³/min
Valve Body Material Hard anodized aluminum alloy; Spool with PU wear-resistant seals
Overall Mounting Dimension Total length 93mm, valve body width 40mm, button head height 25mm
Mounting Type Base plate mounting on valve side / Bracket fixing
Port Definition
- P: Compressed air supply inlet (connect to air compressor / air reservoir)
- A: Actuator output port (connect to air cylinder, pneumatic clutch, pneumatic switch)
- O: Free exhaust port (open to atmosphere; silencer optional for installation)
Selection & Application Difference
1. QY429 (F Resetting): For momentary control (temporary air blow, instant trigger, jog start/stop), e.g. drilling rig temporary air make-up, quick pneumatic unlocking.
2. QY430 (D Latching): For long-duration constant air supply (permanent ON air feed, prolonged locked pneumatic mechanism), one-touch switching between ON/OFF states.
3. Full mechanical interchangeability: Identical mounting holes, thread size and overall outline for both models, direct field replacement without pipe modification.
