11_A_3730_9511_EN_1107
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Transcript of 11_A_3730_9511_EN_1107
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8/6/2019 11_A_3730_9511_EN_1107
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ERHARD RKVE Needle Valves PN 25of ductile cast iron,
with travelling-nut type gaerbox and electric actuator1)
Range of application: water2)
Materials / Equipment
Prod. No.3730 9511 with vaned ring3732 9511 with slotted cylinder and collar bush
Corrosion protection EKB epoxy coating, blue
Body inlet and outlet Ductile cast iron EN-JS1050
Piston guide on rails Special brass
Piston, slotted cylinder Stainless steel
Seals Elastomer
Shaft, slide crank, slide rod, bolts Stainless steel
Vaned ring / seat ring Bronze/stainless steel
Collar bush Stainless steel
Gearbox case Injected cast iron EN-JL1040
Gearbox crank Stainless steel
Gearbox stem Stainless steel
Stem nut Special brass
Gearbox arrangement On the right seen in flow direction3)
1) Pneumatic, hydraulic, weight-loaded actuators or handwheel on request.
2) Other sizes, pressure ratings, and flow media on request.
3) Dimesions of the electric actuator depend on make according to seperate dimensioned sheet.
4) These datas are valid for needle valve with vaned ring and 25 bars differential pressure:
For needle valve with slotted cylinder and other differential pressures these datas can change.
Dimensions3):
Size Face-to-face
dimension
Flangedia.
Height Space requirement Stemturns per
travel
Weightwithout
actuator
approx
Volume
DN L D h1 h2 h3 e1 e2 e3
mm mm mm mm mm mm mm mm approx4) kg m3
500 800 730 300 372 297 310 460 65 42 595 0,70
600 900 845 380 451 336 310 545 98 43 1065 1,21
700 1100 960 460 550 416 440 640 84 43 1930 1,77
800 1300 1085 535 644 465 510 720 86 57 2465 2,44
900 1350 1185 610 719 470 585 800 80 52 3695 3,43
1000 1600 1320 700 828 430 655 670 112 58 4800 4,88
1200 1620 1530 785 932 430 735 950 120 60 6800 6,75
Size Pressure rating Hydrostatic test pressurein bars for
Max. adm. working pressure inbars at a working temperature
of up to 40 CDN2) PN2)
bodywater
seatwater
500 - 1200 25 37,5 27,5 25
When placing the order, please specify application, kind of water, maximum and minimum flow rates,pressure upstream and downstream of the Needle Valve as well as installation conditions. For theelectric actuator, specify kind of current and voltage.
FlangesB, DN 500 - 1200, PN 25, DI, type 21, DIN EN 1092-2
3730 95113732 9511
Kunststoffbeschichtung
EKBKunststoffbeschichtung
3730 9511 with vaned ring
3732 9511 with slotted cylinder
Kunststoffbeschichtung
EKBKunststoffbeschichtung
epoxy coating
epoxy coating
ERHARD GmbH & Co. KGPostfach 1280 D-89502 Heidenheim Phone (07321) 3200 Fax (07321) 320525http://www.erhard.de E-Mail: [email protected] corresponding to the latest level of development, modifications reserved. G19/1107/7/11A
