Y43H/Y Piston Steam Reducing Valve (PRV)

Image of Y43H Piston Steam Reducing Valve
Y43H Piston Steam Reducing Valve
Image of Y43Y Piston Steam Reducing Valve
Y43Y Piston Steam Reducing Valve

This series PRV is pilot piston type pressure reducing valve for steam, mainly composed of main valve and pilot valve. The main valve consists of valve seat, main valve disc, piston, cylinder sleeve, and spring. The piston valve consists of valve seat, plug, membrane, spring and adjusting spring. Set the outlet pressure through adjusting spring, sense the change of pressure of outlet with membrane, adjust the flow area of throttling part of main valve through open and close of pilot valve and drive the piston, to realize the function of reducing and regulating valve. The product is mainly applied on steam piping, to reduce and regulate the pressure.

Live Photo of Y43H/Y Piston Steam Reducing Valve

Materials

Name of Parts Materials
Body, Bonnet GG-20, WCB, 304 S.S.
Up Plug, Up Seat, Down Plug, Down Seat, Diaphragm, Piston 304 S.S.
Spring G61500
Adjusting Spring 92600
Piston Ring Iron–nickel Alloy

Dimensions

Dimensions of Y43H/Y Piston Steam Reducing Valve
Dimensions of Y43H/Y Piston Steam Reducing Valve
Nominal Pressure PN (MPa) Nominal Diameter DN (mm) Dimensions (mm)
L H1 H2
1.6 20 160 89 312
25 180 101 315
32 200 107 320
40 220 113 325
50 250 120 335
65 260 125 340
80 310 140 360
100 350 150 390
125 400 190 415
150 450 205 440
200 500 220 475
250 600 270 545
300 800 335 575
350 850 390 650
400 900 430 705
2.5 25 200 101 315
32 200 107 320
40 220 113 325
50 250 120 335
65 260 125 340
80 310 140 360
100 350 150 390
125 400 190 425
150 450 210 445
200 500 245 485
250 600 270 545
300 800 335 575
350 850 390 650
400 900 430 710
4.0 25 200 101 315
32 220 107 320
40 240 113 325
50 270 120 335
65 280 140 365
80 330 150 385
100 380 150 385
125 450 190 425
150 500 210 445
200 560 245 485
6.3 (6.4) 25 200 110 370
32 220 125 380
40 240 130 395
50 270 135 405
65 300 145 410
80 330 170 445
100 380 175 455
125 450 245 504
150 500 280 555
200 560 310 581