Fushiman PPD41-3 Pressure Reducing Valves

Manufacturer: Fushiman Co.,LTD.
Model: PPD41-3

Model	Nominal Diameter	Primary Pressure	Secondary Pressure Range	Maximum Operating Temperature	Body Material	Connection
PPD41-3	15〜25	MAX. 1.6MPa	0.03～0.7MPa	220℃	FCD,SCPH,SCS	Threaded, Flange

Compact design, suitable for low flow rates.
The valve body is designed with a free ball structure and uses wear-resistant materials.
The diaphragm is made of heat-resistant synthetic rubber, allowing it to respond sensitively to pressure changes.

Specifications and Materials

Fluid	Pressure MPa		Temperature (°C)	Main Component Materials					Pipe Connection
Fluid	Primary Side	Secondary Side Setting Range	Temperature (°C)	Valve Body	Spring Protector	Valve Body & Seat	Bottom Cover	Diaphragm	Pipe Connection
Steam	0.05-1.6	0.03-0.15 0.1-0.7	Saturation ~ 220	Spheroidal Graphite Cast Iron	Spheroidal Graphite Cast Iron	Stainless Steel	Brass	Heat-resistant Synthetic Rubber	JIS Rc Threaded Type
	0.05-1.0			Spheroidal Graphite Cast Iron			Brass		Flange JIS 10K Full Face
	0.05-1.6			Cast Steel			Stainless Steel		Flange JIS 20K Flat Face
	0.05-1.0			Stainless Steel Cast Steel			Stainless Steel		Flange JIS 10K Full Face

Note:

ASME Class 150 and 300 flange-type valve bodies made of cast steel are also available.
Versions for a primary pressure of 4.0 MPa can also be manufactured.
Diaphragms made of stainless steel for high-temperature use are also available.

Performance

Minimum Set Differential Pressure	0.02 MPa
Offset	Within 10% of the maximum set pressure
Shut-off Pressure Rise	0.02 MPa or less
Minimum Adjustable Flow Rate	0.35 kg/h
Seat Leakage	0.05% or less of the rated flow rate

Cv Value

Nominal Diameter	15	20・25
CV	0.4	1

Structure and Dimensions

Cast Iron, Threaded Type	Cast Iron, Flange Type	Cast Steel, Stainless Steel Cast Steel, Flange Type

Dimensions and Mass

(mm, kg)

Valve Box Material	Nominal Diameter	Main Dimensions					Mass	Pipe Connection
Valve Box Material	Nominal Diameter	d	L	Hi	h2	E	Mass	Pipe Connection
Ductile Cast Iron	15	1/2	95	51	165	100	2.6	JIS Rc Threaded Type
	20	3/4	130	65	222	130	5.8
	25	1	130	65	222	130	5.8
Ductile Cast Iron	15	—	170	62	162	100	4.7	Flange JIS 10K Full Face
	20	—	215	75	218	130	8
	25		215	75	218	130	9
Cast Steel	15	—	211	73	213	130	8.3	Flange JIS 20K Flat Face
	20	—	215	73	213	130	8.7
	25	—	215	73	213	130	9.3
Stainless Steel Cast Steel	15	—	207	73	210	130	8.3	Flange JIS 10K Full Bore
	20	—	211	73	210	130	8.7
	25	—	211	73	210	130	9.3

Call Route Selection

Please select the appropriate call route according to the call route selection chart.

If the nominal diameter is too small, the required flow rate cannot be obtained. However, if it is too large, hunting may occur, leading to abnormal wear.

When the primary-side pressure and the set pressure are constant, if there is a range, select a nominal diameter that minimizes the differential pressure. Choose the nominal diameter based on the primary-side pressure and set pressure. Additionally, the minimum adjustable flow rate of the reducing valve must be at least 0.35 kg/h.