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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
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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

  • 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

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

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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

  • 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.

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.

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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.

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FAQ

Q1.How do I choose the right size?
A1.Match the tube O.D. and thread to your system. Example: Ø8 tube with Rc 1/8" port → JPA8-01. Send us your tube size and port thread and we will confirm the model within 24 hours.
Q2. Which direction does the valve meter?
A2.The arrow on the body shows the metered direction; the reverse direction flows freely through the check valve. For cylinder speed control, mount it to meter the exhaust air (meter-out) for the smoothest motion.
Q3.Is it interchangeable with Airtac JPC?
A3.Yes. Same tube sizes, threads and dimensions as Airtac JPC straight speed controllers — a drop-in replacement at factory-direct price. Send us your Airtac part number and we will match it.
Q4.Does it fit other speed controllers?
A4.Yes — it replaces equivalent straight one-way speed controllers from other brands (same tube O.D. and thread standard). Send your original part number or drawing and we will confirm interchangeability before quoting.
Q5. How do I adjust the speed and keep it stable?
A5. Loosen the lock nut, turn the knob to the desired speed, then retighten the lock nut. The lock nut holds the setting under vibration.
Q6.What if the speed drifts or the valve leaks?
A6.Check the lock nut first, then the needle setting and tube condition (kinked / blocked). Use soapy water to check for leaks; replace seals with genuine spare kits if needed.
Q7. What is the working pressure and temperature range?
A7.0.05–0.9 MPa; -5 °C to 60 °C standard. High-temperature (150 °C), low-temperature (-40 °C) variants on request.
Q8. Can you customize thread / material / direction / marking?
A8.Yes — thread types (M5/Rc/G/NPT), body material (brass, stainless, PBT), flow direction, knob type and laser marking are all available. Send your drawing or sample.
Q9.What is MOQ and lead time?
A9.Low MOQ for standard models (stock items ship fast); custom models typically 7–15 days depending on quantity. Contact us for exact lead time.
Q10. Do you provide warranty and samples?
A10. Yes — sample orders are welcome before bulk purchase, and we provide warranty support on defective products. After-sales technical support available via WhatsApp / email.

Factory Advantages and Certifications

Company Introduction 1

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Company Introduction 2

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Certification

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