Fushiman PPD41B-3 Pressure Reducing Valves For Liquids

Manufacturer: Fushiman Co.,LTD.
Model: PPD41B-3

Model	Nominal Diameter	Primary Pressure	Secondary Side Setting Range	Maximum Operating Temperature	Body Material	Connection
PPD41B-3	15〜25	MAX. 1.0MPa	0.03～0.7MPa	80℃	CAC,SCS	Flange, Threaded

The valve body adopts a secondary pressure balance method, so the secondary-side pressure is hardly affected by fluctuations in primary-side pressure.
The valve body is equipped with synthetic rubber, which provides excellent sealing when the valve is closed.
A built-in strainer (equivalent to 80-mesh) is included.
For water applications, please use the P100-3Y type pressure reducing valve.
Install upright on horizontal piping.

Specifications and Materials

Fluid	Pressure (MPa)		Temperature (°C)	Main Component Materials					Pipe Connection
Fluid	Primary Side	Secondary Side Setting Range	Temperature (°C)	Valve Body	Lower Cover	Spring Protector	Valve	Diaphragm	Pipe Connection
Oil and Other Non-Corrosive Liquids	0.05 – 1.0	0.03 – 0.15 0.1 – 0.7	0 – 80	Bronze	Bronze	Ductile Cast Iron	Stainless Steel and Synthetic Rubber	Synthetic Rubber	JIS Rc Threaded Type
				Cast Stainless Steel	Stainless Steel		Stainless Steel and Synthetic Rubber	Synthetic Rubber	JIS Rc Threaded Type
				Cast Stainless Steel	Stainless Steel		Stainless Steel and Teflon	Teflon-Coated Synthetic Rubber	JIS 10K Full-Face Flange

Note : For water applications, please use the P100-3Y type pressure reducing valve. It is more economical.
Remark : If the valve body is made of cast stainless steel, it can also be manufactured to ASME Class 150 standards.

Performance

Minimum Set Differential Pressure	0.02MPa
Shutoff Pressure Rise	0.02 MPa or less (For Teflon valve body: 0.03 MPa or less)
Offset	10% or less of the maximum set pressure (Minimum value: 0.05 MPa)
Minimum Adjustable Flow Rate (Water)（2）	1 ℓ/min (For Teflon valve body: 2 ℓ/min)
Valve Seat Leakage	0.01% or less of the rated flow (For Teflon valve body: 0.05% or less)
Maximum Usable Viscosity	200 mm²/s (at operating temperature) (3)

(2) For fluids other than water, divide by √γ (where γ is the specific gravity of the fluid, with 4°C water as 1).
(3) If the fluid’s viscosity exceeds 20 mm²/s at the operating temperature, flow rate correction is required.

Cv Value

Nominal Diameter	15	20	25
Cv Value	1.8	2.6	3.9
Maximum Flow Rate (Water) ℓ/min (4)	30	55	90

Note (4):
For fluids other than water, divide by √γ (where γ is the specific gravity of the fluid, with water as 1).

Structure and Dimensions

Valve Body: Bronze / Cast Stainless Steel	Valve Body: Cast Stainless Steel

Dimensions and Mass

(mm, kg)

Material & Type	Nominal Diameter	Main Dimensions				Mass
Material & Type	Nominal Diameter	L	H1	H2	E	Mass
Bronze Threaded Type	15	85	43	168	100	2.8
	20	115	47	222	130	5.5
	25	115	47	222	130	5.5
Cast Stainless Steel Threaded Type	15	135	49	224	130	6.8
	20	135	49	224	130	6.8
	25	135	49	224	130	6.7
Cast Stainless Steel Flange JIS 10K	15	207	63	210	130	8.3
	20	211	63	210	130	8.7
	25	211	63	210	130	9.3