The Fisher 167DA – 13 is a three – way switching valve in the 167DA series, typically used to deliver gaseous fluids with continuously reduced pressure to pilot – operated controllers and other pneumatic instrumentation. Here is a detailed introduction:

Product Features

Compact and lightweight structure: It is designed with a compact and lightweight structure, occupying little space, which makes it easy to install and integrate into various systems.

Precise and easy adjustment: Different springs can be selected for optimal resolution. The switching point can be easily set to a specific required value via the adjusting screw on the top of the spring case, enabling easy and accurate adjustment.

Convenient maintenance: No special tools are required for maintenance, and all maintenance work can be carried out online, which is convenient and saves time and cost.

Robust and durable: Its sturdy structural design gives it a long service life and extremely low maintenance requirements, allowing it to operate stably under various complex working conditions.

Strong corrosion resistance: Bolts and adjusting screws are treated with double zinc – chromate to enhance corrosion resistance. In addition, optional stainless – steel bolts and adjusting screws are available. Some models (such as 167DS and 167DAS) are made of stainless – steel structure, which has high resistance to corrosion, especially suitable for harsh environments like offshore applications.

Suitable for special gases: It has the ability to handle sour gas and complies with the requirements of NACE MR0175 and MR0103 standards.

Technical Specifications

Structure type: Three – way switching valve.

Body size and end connection: Ports A and C are 1/4 or 1/2 NPT; vent and control pressure connections (Port D) and Port B are 1/4 NPT.

Maximum inlet pressure: 400 psig (approximately 27.6 bar).

Temperature range: Standard bolting: – 20°F to 180°F (approximately – 29°C to 82°C); stainless – steel bolting: – 40°F to 180°F (approximately – 40°C to 82°C); FKM trim: 0°F to 300°F (approximately – 18°C to 149°C).

Pressure registration: Internal.

Approximate weight: Approximately 1.2 pounds (0.5 kg).

Ports A and C Size Air – to – Diaphragm Range, PSIG FS Number

Port A or C as Inlet Port B as Inlet

1/4 NPT 14 to 20 7 to 20 167DA – 15

1/4 NPT 16 to 35 10 to 30 167DA – 16

1/4 NPT 25 to 60 25 to 50 167DA – 13

1/4 NPT 40 to 125 40 to 90 167DA – 85

1/2 NPT 14 to 20 7 to 20 167DA – 9

1/2 NPT 16 to 35 10 to 30 167DA – 10

1/2 NPT 25 to 60 25 to 50 167DA – 11

1/2 NPT 40 to 125 40 to 90 167DA – 81