The Yoshitake GD-6N is a direct-acting pressure reducing valve designed for steam applications. It offers high accurate controllability of reduced pressure even at small flow rates. The valve features a simple, compact, and lightweight structure that is less prone to failure and easy to maintain. It is easy to install due to its screwed connections. The stainless steel valve and valve seat ensure high wear-resistance and durability, while a built-in 60-mesh screen protects internal components from pipe scale, chips, and other dirt.

Features

• High accurate controllability of reduced pressure even at small flow rate.
• Simple in structure, less prone to fail and easy to maintain.
• Compact and lightweight.
• Easy to install due to screwed connections.
• Highly wear-resistance and durability of stainless steel made valve and valve seat. A screen (60 mesh) is incorporated to protect the valve and valve seat from dirt such as pipe scale and pipe chips.

Specifications

Specification	Value
Model	GD-6N
Application	Steam
Inlet pressure	1.0 MPa or less
Reduced pressure	(A) 0.02-0.1 MPa (spring color: yellow) (B) 0.1-0.4 MPa (spring color: blue)
Minimum differential pressure	0.05 MPa
Maximum pressure reduction ratio	10:1
Maximum temperature	220°C
Valve seat leakage	0.1% or less of rated flow rate
Connection	JIS Rc screwed

Materials

Part	Material
Body	Ductile cast iron
Valve, valve seat	Stainless steel
Diaphragm	Stainless steel

INFO

Available with stainless steel wetted parts and all stainless steel made.

Dimensions and Weights

Nominal size	d	L (mm)	H (mm)	H1 (mm)	E (mm)	Weight (kg)
10A	Rc 3/8	165	243	57	155	5.5
15A	Rc 1/2	165	243	57	155	5.5
20A	Rc 3/4	185	267	76	175	8.2
25A	Rc 1	185	267	76	175	8.2

Performance Charts

Flow Characteristic Chart

Pressure Characteristic Chart

This chart shows variation in reduced pressure when the inlet pressure of 0.3 MPa is changed between 0.3 MPa and 1.0 MPa while the reduced pressure is set at 0.2 MPa.

Nominal Sizes Selection Chart (For Steam)

TIP

Set the safety factor at 80 to 90%.

Assembly Drawing