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 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 | ||
Add: No. 175, Lane 250, Fangde Road, Jiading District, Shanghai
Tel: +86-21-51863336
Fax: +86-21-34677003
E-mail: shldv@139.com
Web: Http://www.shldv.com
Fujian plant site：2233 Maosheng Road, Nan 'an City, Fujian Province
Factory telephone：+86-21-31007333
Shanghai Public Network Anbei: 31011402004337Sitemap
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