OEM Factory Direct JPA Series Straight Speed Controller Manufacturer One-Way Pneumatic Flow Control Valve Compatible With Airtac JPC Wholesale
JPA straight speed controllers (one-way flow control valves) for Ø4–12 mm tubing with M5 / Rc 1/8"–1/4" threads — fine speed adjustment in one direction and free flow in reverse. Nickel-plated brass body with lockable adjustment knob; working pressure 0.05–0.9 MPa. Compatible with Airtac JPC-type speed controllers at factory-direct price
- Overview
- Recommended Products
- Automation assembly lines — cylinder speed control for smooth pressing, feeding and clamping
- Packaging machinery — sealing heads, carton forming and conveying units
- Textile machinery — tensioning and traversing units with adjustable speed
- Woodworking machinery — panel feeding and clamping with controlled speed
- Food & beverage processing — gentle cylinder movement on filling and sorting lines
- Semiconductor & electronics equipment — precise, low-shock movement of pick-and-place units
- Robotics & grippers — adjusting gripper open / close speed
- Material handling & transfer — controlled pushers, lifters and diverters
- Machine tools — clamping and tool changer speed control
- General pneumatic circuits — the standard way to tune cylinder speed in any air system
- One-way speed control — needle valve meters the airflow; built-in check valve gives free flow in reverse.
- Precise stepless adjustment — fine needle thread for accurate, repeatable speed setting.
- Lockable knob — set the speed, tighten the lock nut, and the setting stays stable under vibration.
- Compact straight design — inline mounting saves space and keeps piping neat.
- Durable brass body — nickel-plated for corrosion resistance and long service life.
- Full size range — tube Ø4 / 6 / 8 / 10 / 12 mm; threads M5 / Rc 1/8" / Rc 1/4" (G / NPT on request).
- Wide pressure range — 0.05–0.9 MPa covers most pneumatic applications.
- Wide tube compatibility — works with nylon and polyurethane tubes.
- JPC-compatible — same dimensions as Airtac JPC straight speed controllers; drop-in replacement.
- Factory direct OEM/ODM — low MOQ, fast lead time, custom marking and packaging.
Product Detailed Description:
The JPA Series is a straight one-way speed controller with a nickel-plated brass body and an integrated needle valve plus check valve. Engineered as a direct functional replacement for Airtac JPC, it delivers identical performance and connection compatibility at significantly lower cost. The lockable adjustment knob provides precise, stable cylinder speed control in one direction while the check valve allows free flow in the reverse direction.
Application Industries
Product feature
1. The silencer is small size, and light weight with small installation space.
2. Excellent flow charatentics, high sensitivity and easy to adjust.
3.The silencer brass body adopts a special nickel-plating process, which has good corrosion resistance and anti-pollution property.
4.Anti-drop structure is designed on the regulating rod.
5.The sealant being coated on threaded portion can ensure no leakage of the threaded connection part.
6. The inserting direction of universal speed controller can be adjusted in 360
Specification
Operating pressure range |
0~10kgf/cm(0~1.0MPa) |
Negative pressure |
-750mmHg(10Torr) |
Proof pressure |
1.5MPa |
Ambient and fluid temperature (℃) |
-20~70 |
Applicable tubing |
Soft nylon or polyurethane |
Color |
Grey/black/white |
MOQ |
10 |
Lead Time |
5-7 Days |
Warranty |
1 year |
Pattern of Payment |
Paypal ;T/T;L/C;D/P |





Customization Options
Customization Item |
Options & Details |
Lead Time |
Tube O.D. |
Ø4 / 6 / 8 / 10 / 12 mm |
3 – 5 days |
Connection Thread |
Standard: M5 / Rc (PT) 1/8" – 1/4". Options: G (BSPP), NPT |
3 – 5 days |
Flow Direction |
Standard: meter-in one direction, free flow reverse. Options: reverse flow direction type |
3 – 5 days |
Body Material |
Standard: brass, nickel-plated. Options: stainless steel, PBT resin (lightweight) |
5 – 7 days |
Knob Type |
Standard: adjustable knob with lock nut. Options: non-locking knob, key-adjustable (anti-tamper) |
3 – 5 days |
Seal Material Upgrade |
Standard: NBR. Options: Viton/FKM (high temperature), HNBR, EPDM |
5 – 7 days |
High-Temperature Variant |
FKM seals + high-temperature grease — rated to 150 °C |
7 – 10 days |
Low-Temperature Variant |
Low-temperature seals — rated to -40 °C |
7 – 10 days |
Pressure Variant |
Standard: 0.05 – 0.9 MPa. Options: higher pressure spec on request |
5 – 7 days |
OEM Branding |
Custom laser marking / engraving; neutral or branded packaging |
3 – 5 days |
Product Advantages
Installation
1.Installation and removal of tubing
1.1.Installation of tubing
Grasp the tubing and slowly push it into the fitting until it comes to a stop.The tubing will be locked by the spring gasket.
1.2.Removaloftubing
Push the release button to open the spring gasket so that the tubing can be released.
Note:When remove the tubing.make sure the pressure in the tubing is Zero.
2.Mounting of the speed controlle
Mount the speed controller into the inlet and outlet port of the cylinder with a wrench.
Note: Please refer to the fittings for the tightening torque and thread screw-in depth.
Operation
1. Adjustment of the cylinder speed
1.1. Make sure the speed controller is turned off before applying air pressure.The cylinder may fly out due to the high speed if the air is inlet when the
speed controller is turned on
1.2. Adjust the speed by opening the needle slowly from the fully closed state. When a needle valve is turned clockwise, the air flow through is reduced and
the actuator speed decreases. When a needle valve is turned counter-clockwise,the air flowthrough is increased and the actuator speed increases.

FAQ
Factory Advantages and Certifications
Company Introduction 1

Company Introduction 2

Certification
