Yoshitake GD-27BP is a pressure reducing valve featuring a combination of pressure reducing, by-pass, and stop functions. This multi-functional design saves both cost and installation space. The wetted parts are manufactured from corrosion-resistant materials to prevent rusty water, and its pressure balance structure maintains a constant reduced pressure regardless of inlet pressure fluctuations.

Features

• Combination of pressure reducing function, by-pass function and stop function that provide saving cost and space.
• Wetted parts are made of corrosion-resistant material to prevent rusty water.
• Pressure balance structure can keep the reduced pressure at a constant level without being effected by inlet pressure.
• Maintenance and inspection can be conducted easily by disassembling the upper side only.

Specifications

Specification	Value
Application	Cold and hot water
Inlet pressure	1.0 MPa or less
Reduced pressure	(A) 0.05-0.35 MPa, (B) 0.3-0.7 MPa
Minimum differential pressure	0.05 MPa
Maximum pressure reduction ratio	10:1
Max. temperature	90°C
Body Material	Cast bronze (NPb-treated)
Valve seat Material	Cast bronze (NPb-treated)
Valve disc Material	FKM
Diaphragm Material	EPDM
Connection	JIS 10K FF flanged

Installation posture

Horizontal or vertical installation is available (For 100A, horizontal piping with upward posture only).

Dimensions and Weights

Nominal size	L	H1	H2	d	Weight (kg)
20A	200	61	137	18	6
25A	200	61	137	18	7
32A	245	72	177	28	11
40A	245	72	177	28	12
50A	260	92	186	36	16
65A	328	99	257	45	30
80A	402	112	274	56	38
100A	470	134	328	72	58

Functions

Switching of three functions (pressure reducing function, by-pass function and stop function) is conducted by operating stems at inlet side and outlet side and pointing the arrow at a certain point of the plate.

Rated Flow Rate

(The differential pressure before and after the valve is 0.15 MPa or more.)

Nominal size	20A	25A	32A	40A	50A	65A	80A	100A
Rated flow rate L/min	40	60	100	150	250	300	450	700

TIP

If the differential pressure before and after the valve is less than 0.15 MPa, select a proper nominal size from the flow rate charts provided in the full documentation.