Y44H/Y Bellows Steam Pressure Reducing Valve (PRV)

Image of Y44H/Y Bellows Steam Pressure Reducing Valve (PRV)
Y44H/Y Bellows Steam Pressure Reducing Valve (PRV)

The Y44H/Y Direct acting bellows pressure reducing valve changes lower stream pressure through the bellows and drives the plug.

Performance

Nominal Pressure (MPa) 0.6 1.0 1.6
Casing Body Test Pressure (MPa) 0.9 1.5 2.4
Sealing Test Pressure (MPa) 0.6 1.0 1.6
Max. Inlet Pressure (MPa) 0.6 1.0 1.6
Outlet Pressure Range (MPa) 0.05 - 0.4 0.1 - 0.8 0.1 - 1.0
Min. Pressure Difference (MPa) 0.1 0.15 0.15

Materials

Name of Part Materials
Body, Bonnet WCB
Bottom WCB
Seat, Plug 410 S.S.
Bellows 321 S.S.
Gasket 410 S.S.
Spring ASTM 6150
Adjust Spring UNS G92600

Flow factor ( Cv )

DN 15 20 25 32 40 50 65 80 100
Cv 1 2.5 4 6.5 9 16 25 36 64

Dimensions

Dimensions of Y44H/Y Bellows Steam Pressure Reducing Valve (PRV)
Y44H/Y Bellows Steam Pressure Reducing Valve (PRV)
Nominal Diameter DN Dimensions
L H H1 PN 0.6 MPa PN 1.0 MPa PN 1.6 MPa
    D K n-ф d C D K n-ф d C D K n-ф d C
15 140 140 290 90 80 55 4-12 40 12 95 65 4-14 45 12 95 65 4-14 45 14
20 140 140 295 98 90 65 4-12 50 12 105 75 4-14 55 14 105 75 4-14 55 14
25 160 160 295 110 100 75 4-12 60 14 115 85 4-14 65 14 115 85 4-14 65 14
32 180 180 295 110 120 90 4-14 70 14 135 100 4-18 78 16 135 100 4-18 78 16
40 200 200 325 125 130 100 4-14 80 14 145 110 4-18 85 16 145 110 4-18 85 16
50 230 230 325 125 140 110 4-14 90 14 160 125 4-18 100 16 160 125 4-18 100 16
65 280 325 130 160 130 4-14 110 14 180 145 4-18 120 18 180 145 4-18 120 18
80 310 380 160 185 150 4-18 125 16 195 160 4-18 135 18 195 160 8-18 135 20
100 350 380 170 205 170 4-18 145 16 215 180 8-18 155 20 215 180 8-18 155 20