Yoshitake Japan GP-2000 Pressure Reducing Valve for Steam Applications.

  • Pilot operated diaghragm type
  • Superior capacity & performance
  • Accurate control
  • Valve leakage meets ANSI Class IV
Application Steam
Type Pilot operated diaphragm
Inlet Pressure 1 to 20 Bar
Reduced Pressure 0.2 to 14 Bar
Connection BSPT (ISO7.1 Rc)
Adjustable Reduced Pressure 85% or less of inlet pressure
Minimum Differential Pressure 0.5 Bar
Maximum Pressure Reduction Ratio 20:1
Temperature 0 to 220°C
Body Ductile Iron
Valve & Seat Stainless Steel
Pilot Valve & Seat Stainless Steel
Diaphragm Brass or Bronze


Flow Rate in Kilograms per Hour

P1(MPa) P2(MPa) 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
2 0.1-0.9 1260 1814 2746 3606 4737 8064
1 1232 1775 2687 3525 4634 7889
1.2 1136 1636 2477 3250 4273 7273
1.4 1012 1458 2207 2896 3808 6481
1.8 0.1-0.8 1140 1641 2485 3260 4286 7296
0.9 1113 1603 2426 3183 4185 7125
1 1067 1537 2327 3053 4014 6832
1.2 954 1374 2081 2730 3590 6111
1.4 803 1157 1751 2298 3021 5143
1.6 0.1-0.7 1020 1468 2223 2917 3835 6528
1 893 1286 1947 2554 3358 5716
1.3 664 956 1448 1900 2498 4253
1.4 0.1-0.6 900 1296 1962 2574 3384 5760
1 702 1011 1531 2009 2642 4497
1.1 620 893 1352 1773 2331 3969
1.2 0.1-0.5 780 1123 1700 2230 2932 4992
1 477 687 1040 1365 1795 3055
1 0.1-0.4 660 950 1438 1887 2481 4224
0.5 635 914 1385 1817 2388 4066
0.8 435 627 950 1246 1638 2789
0.9 0.1-0.4 600 864 1308 1716 2256 3840
0.5 551 793 1201 1576 2072 3528
0.7 413 595 901 1182 1554 2646
0.8 0.1-0.3 540 777 1177 1544 2030 3456
0.5 462 665 1007 1322 1738 2958
0.7 0.1-0.3 480 691 1046 1372 1804 3072
0.5 364 525 794 1042 1371 2333
0.6 0.1-0.2 420 604 915 1201 1579 2688
0.3 395 570 862 1132 1488 2533
0.5 248 357 541 710 934 1590
0.5 0.1-0.2 360 518 784 1029 1353 2304
0.3 308 443 671 881 1158 1972
0.4 228 329 498 653 859 1462
0.4 0.05-0.15 300 432 654 858 1128 1920
0.3 206 297 450 591 777 1323
0.3 0.05-0.1 240 345 523 686 902 1536
0.2 182 262 397 521 685 1166
0.2 0.05 180 259 392 515 677 1152
0.1 154 221 335 440 579 986
0.1 0.05 91 131 198 260 342 583

*P1 = inlet pressure, P2= Outlet pressure 

Size 1/2" to 2" BSPT
Body Ductile Iron
Application Steam
Inlet Pressure Range 1 to 20 Bar
Outlet Pressure Range 0.2 to 14 BAR
Temperature 0°C to 220°C

15mm to 40mm

GP-2000 Ductile Iron Pressure Reducing Valve Construction

Number Part Material Grade Qty
1 Body Ductile Cast Iron FCD450 1
2 Pilot Body Ductile Cast Iron FCD450 1
3 Spring Chamber Cast Iron FC200 1
4 Top Diaphragm Case Ductile Cast Iron FCD450 1
5 Bottom Diaphragm Case Ductile Cast Iron FCD450 1
6 Main Valve Stainless Steel SUS420J2 1
7 Main Valve Seat Stainless Steel SUS420J2 1
8 Gasket Copper C1100 1
9 Main Spindle Stainless Steel SUS403 1
10 Guide Stainless Steel SUS420J2 1
11 Retainer Brass or Bronze C3771 or CAC406 1
12 Main Diaphragm Stainless Steel SUS301 2
13 Spring Stainless Steel SUS304 1
14 Spring Plate Brass C3604 1
15 Screen Stainless Steel SUS304 1
16 Gasket Non Asbestos Non Asbestos 1 or 2
17 Pilot Valve Stainless Steel SUS420J2 1
18 Pilot Valve Seat Stainless Steel SUS420J2 1
19 Pilot Valve Spring Stainless Steel SUS304 1
20 Pilot Spring Plate Stainless Steel SUS304 1
21 Bolt Stainless Steel SUS 1
22 Gasket Copper C1100 1
23 Pilot Diaphragm Stainless Steel SUS301 2
24 Spring Plano Wire or Alloy Steel SWP or SWOSC 1
25 Top Spring Plate Brass C3604 1
26 Bottom Spring Plate Brass C3604 1
27 Adjusting Screw Rolled Steel SS400 1
28 Lock Nut Steel Steel 1
29 Plug Steel Steel 2
30 Joint Brass C3604 2
32 Elbow Brass C3771 1
33 Tee Brass C3771 1
34 Pipe Copper C1220 1
35 Pipe Copper C1220 1
36 Pipe Copper C1220 1
37 Bolt Carbon Steel SCM435 4
38 Bolt Carbon Steel SCM435 4
39 Stud Bolt Carbon Steel SCM435 4
40 Nut Steel Steel 4
41 Bolt Carbon Steel SCM435 1 set
42 Name Plate Stainless Steel SUS304 1
47 Gasket Non Asbestos Non Asbestos 0 or 1
49 Plug Steel Steel 3
53 E-Ring Stainless Steel SUS 1
55 Sensing Plate Copper C1220 1
56 Joint Brass C3604 2

GP-2000 Ductile Iron Pressure Reducing Valve for Steam Dimensions

Size L (mm) H (mm) Weight (kg) Cv value
1/2" BSPT 150 398 14 5
3/4" BSPT 150 398 14 7.2
1" BSPT 160 404 18.5 10.9
1-1/4" BSPT 180 434 21.5 14.3
1-1/2" BSPT 180 434 21.5 18.8
2" BSPT 230 498 33 32

Yoshitake Japan GP-2000 Pressure Reducing Valve for Steam Applications.

  • Pilot operated diaghragm type
  • Superior capacity & performance
  • Accurate control
  • Valve leakage meets ANSI Class IV
Application Steam
Type Pilot operated diaphragm
Inlet Pressure 1 to 20 Bar
Reduced Pressure 0.2 to 14 Bar
Connection BSPT (ISO7.1 Rc)
Adjustable Reduced Pressure 85% or less of inlet pressure
Minimum Differential Pressure 0.5 Bar
Maximum Pressure Reduction Ratio 20:1
Temperature 0 to 220°C
Body Ductile Iron
Valve & Seat Stainless Steel
Pilot Valve & Seat Stainless Steel
Diaphragm Brass or Bronze


Flow Rate in Kilograms per Hour

P1(MPa) P2(MPa) 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
2 0.1-0.9 1260 1814 2746 3606 4737 8064
1 1232 1775 2687 3525 4634 7889
1.2 1136 1636 2477 3250 4273 7273
1.4 1012 1458 2207 2896 3808 6481
1.8 0.1-0.8 1140 1641 2485 3260 4286 7296
0.9 1113 1603 2426 3183 4185 7125
1 1067 1537 2327 3053 4014 6832
1.2 954 1374 2081 2730 3590 6111
1.4 803 1157 1751 2298 3021 5143
1.6 0.1-0.7 1020 1468 2223 2917 3835 6528
1 893 1286 1947 2554 3358 5716
1.3 664 956 1448 1900 2498 4253
1.4 0.1-0.6 900 1296 1962 2574 3384 5760
1 702 1011 1531 2009 2642 4497
1.1 620 893 1352 1773 2331 3969
1.2 0.1-0.5 780 1123 1700 2230 2932 4992
1 477 687 1040 1365 1795 3055
1 0.1-0.4 660 950 1438 1887 2481 4224
0.5 635 914 1385 1817 2388 4066
0.8 435 627 950 1246 1638 2789
0.9 0.1-0.4 600 864 1308 1716 2256 3840
0.5 551 793 1201 1576 2072 3528
0.7 413 595 901 1182 1554 2646
0.8 0.1-0.3 540 777 1177 1544 2030 3456
0.5 462 665 1007 1322 1738 2958
0.7 0.1-0.3 480 691 1046 1372 1804 3072
0.5 364 525 794 1042 1371 2333
0.6 0.1-0.2 420 604 915 1201 1579 2688
0.3 395 570 862 1132 1488 2533
0.5 248 357 541 710 934 1590
0.5 0.1-0.2 360 518 784 1029 1353 2304
0.3 308 443 671 881 1158 1972
0.4 228 329 498 653 859 1462
0.4 0.05-0.15 300 432 654 858 1128 1920
0.3 206 297 450 591 777 1323
0.3 0.05-0.1 240 345 523 686 902 1536
0.2 182 262 397 521 685 1166
0.2 0.05 180 259 392 515 677 1152
0.1 154 221 335 440 579 986
0.1 0.05 91 131 198 260 342 583

*P1 = inlet pressure, P2= Outlet pressure 

Size 1/2" to 2" BSPT
Body Ductile Iron
Application Steam
Inlet Pressure Range 1 to 20 Bar
Outlet Pressure Range 0.2 to 14 BAR
Temperature 0°C to 220°C

GP-2000 Ductile Iron Pressure Reducing Valve for Steam Dimensions

Size L (mm) H (mm) Weight (kg) Cv value
1/2" BSPT 150 398 14 5
3/4" BSPT 150 398 14 7.2
1" BSPT 160 404 18.5 10.9
1-1/4" BSPT 180 434 21.5 14.3
1-1/2" BSPT 180 434 21.5 18.8
2" BSPT 230 498 33 32

15mm to 40mm

GP-2000 Ductile Iron Pressure Reducing Valve Construction

Number Part Material Grade Qty
1 Body Ductile Cast Iron FCD450 1
2 Pilot Body Ductile Cast Iron FCD450 1
3 Spring Chamber Cast Iron FC200 1
4 Top Diaphragm Case Ductile Cast Iron FCD450 1
5 Bottom Diaphragm Case Ductile Cast Iron FCD450 1
6 Main Valve Stainless Steel SUS420J2 1
7 Main Valve Seat Stainless Steel SUS420J2 1
8 Gasket Copper C1100 1
9 Main Spindle Stainless Steel SUS403 1
10 Guide Stainless Steel SUS420J2 1
11 Retainer Brass or Bronze C3771 or CAC406 1
12 Main Diaphragm Stainless Steel SUS301 2
13 Spring Stainless Steel SUS304 1
14 Spring Plate Brass C3604 1
15 Screen Stainless Steel SUS304 1
16 Gasket Non Asbestos Non Asbestos 1 or 2
17 Pilot Valve Stainless Steel SUS420J2 1
18 Pilot Valve Seat Stainless Steel SUS420J2 1
19 Pilot Valve Spring Stainless Steel SUS304 1
20 Pilot Spring Plate Stainless Steel SUS304 1
21 Bolt Stainless Steel SUS 1
22 Gasket Copper C1100 1
23 Pilot Diaphragm Stainless Steel SUS301 2
24 Spring Plano Wire or Alloy Steel SWP or SWOSC 1
25 Top Spring Plate Brass C3604 1
26 Bottom Spring Plate Brass C3604 1
27 Adjusting Screw Rolled Steel SS400 1
28 Lock Nut Steel Steel 1
29 Plug Steel Steel 2
30 Joint Brass C3604 2
32 Elbow Brass C3771 1
33 Tee Brass C3771 1
34 Pipe Copper C1220 1
35 Pipe Copper C1220 1
36 Pipe Copper C1220 1
37 Bolt Carbon Steel SCM435 4
38 Bolt Carbon Steel SCM435 4
39 Stud Bolt Carbon Steel SCM435 4
40 Nut Steel Steel 4
41 Bolt Carbon Steel SCM435 1 set
42 Name Plate Stainless Steel SUS304 1
47 Gasket Non Asbestos Non Asbestos 0 or 1
49 Plug Steel Steel 3
53 E-Ring Stainless Steel SUS 1
55 Sensing Plate Copper C1220 1
56 Joint Brass C3604 2

You May Also Like