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CN | EN

Single Seat Control Valve (electronic)

Technical Parameters

Nominal Size：DN15 ~ DN300

Pressure Rating：PN16/25/40/63/100;CL150(PN20)/300(PN50)/600(PN110)

Operateing Temperature：-196℃~ 593℃

Characteristics：Equal percentage, linear, quickly open

Rangeability：30:1、50:1、 100:1

Seat Leakage Class：ANSI B16.104: IV、V、VI

Body Material：WCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc.

Trim Material：630/316/316+ST/316nitriding/316+Ni60/316+WC etc.

Seal Material：PTFE+ graphite v-shaped packing, flexible graphite ring packing, graphite +PTFE braided packing etc.

Product Details

Product Overview

LD81 series are single-seat LD8 series pressure imbalance structure products, one of two basic guide plunger valve core, the floating sleeve compression type, from the seat structure, modular design, the flow capacity is big, high controlling precision, adjustable range, can achieve minimal flow control, structure is simple, reliable, good seal performance, the scene is easy to maintain. Is suitable for the pressure difference is not big, the seat leakage and high control precision.


Main connection dimensions                                      

DN（mm） 20 25 40 50 65 80 100 150 200 250 300
L（mm） PN1.6MPa 181 184 222 254 276 298 352 451 600 720 820
PN4.0MPa 194 197 235 267 292 317 368 473 600 760 850
PN6.4MPa 206 210 251 286 311 337 394 508 650 800 870
H1（mm） 67 72 87 92 105 110 127 174 209 300 350
Equipped with PSL H（mm） Common type 738 750 765 767 845 857 875 1025 1045 1252 1545
Heat sink type 888 900 930 937 1025 1042 1085 1285 1305 1805 1825
D（mm） 176 225
WT（KG） 15 17 24 29 49 61 82 150 211 370 570
Equipped with 361L H（mm） Common type 501 513 650 652 770 782 800 1080 1125 1345 1365
Heat sink type 651 663 815 822 950 967 1010 1340 1385 1625 1645
D（mm） 225 310
WT（KG） 23 24 39 44 64 76 97 203 264 418 618




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