Control Valve

Check Valve with Low cracking Pressure

RoHS2 Compliant

Securing of air flow becomes possible at low pressure that the conventional valve does not operate.

Resin
  • PBT is used for the main resin parts. PBT: A standard resin material that is ideal for general environments.
Metal
  • Brass with electroless nickel plating is used for the main metal parts.
Seal rubber
  • HNBR is used for the seal rubber material. HNBR: A material with improved ozone resistance by adding hydrogen to NBR. Ideal for low-concentration ozone countermeasures.
  • FKM is used as seal rubber material. FKM: Excellent in heat resistance, chemical resistance, and ozone resistance.

Advantages

Securing of air flow becomes possible at low pressure that the conventional valve does not operate.

Min. opening pressure is lower from 10kPa(0.01MPa) to 5kPa(0.005MPa).

Low level ozone resistant product.

HNBR and FKM is applied for the rubber material.

Less noise generation compared to the conventional type.

No spring incorporated.

Specifications

Fluid medium Air
Max. operating pressure 1.0MPa
Max. vacuum -100kPa
Min. opening pressure(*) 5kPa (at25℃)
Min. opening differential pressure 0.01MPa
Operating temperature range 0~60℃ (No freezing)

* Min. opening pressure is the initial pressure on the secondary side when the pressure is applied from free flow side.

Port size

Tube dia.

mm size(mm) φ4, φ6, φ8, φ10, φ12
inch size φ5/32, φ1/4, φ5/16, φ3/8, φ1/2

Type & Price list

Detailed Safety Instructions

Warning

1.Frequent switching of the valve plug may cause the unit to heat up, which may result in thermal burns. Consult with PISCO if the operation frequency is high.

Caution

1.If the valve is used under conditions where the differential pressure between the primary and secondary sides is extremely large (e.g., the secondary side is open to the atmosphere), the impact during operation may cause the valve plug to break, and in the worst case, the fragments may flow into downstream.

2.Depending on the operating pressure and flow rate, chattering of the valve plug may cause abnormal noise.

3.Be sure to provide a differential pressure of 10 kPa or more in the check direction. Differential pressure below 10kPa may cause leakage.

4.When pressure is applied continuously in the reversing (checking) direction, it may become higher than the minimum operating pressure indicated, depending on ambient temperature and application time.

5.Do not use the product in a way that requires zero leakage, as it allows for leakage.

6.Due to the structure of this product, intrusion of foreign matter may result in a check leak. Be sure to install a filter on the upstream side of the piping.

Frequently Asked Questions for Control Valve Series

Inquiries about this product

It is also possible to suggest products suitable for various conditions such as applications and functions. Please feel free to contact us or visit the nearest sales office.

The following are frequently asked questions. Please check before making inquiries.