韩国DRASTAR,气体调压阀,Core Valve
韩国DRASTAR,气体调压阀,Core Valve
韩国DRASTAR,气体调压阀,Core Valve
Manifolds Diaphragm and Bellows Valve
DRASTAR Core Valve is an advanced concept of valve that Drastar developed for ultra-high purity specialty gases extensively used in the semiconductor manufacturing line, bulk gas line and other facility lines. Core valves have integrated and improved all the merits of diaphragm valve, bellows valve and needle valve to best work (Drastar Patent #10-1510987).
◈ Surface finishes to AP or B.A. 25Ra E.P. 10Ra or 5Ra
◈ Improved for micro and precise adjustment
◈ Pull and lock device (Drastar’s patent #10-1370537) prevents the knob’s self-turning
◈ Easy operation
◈ Applicable for 20bar(290psig) ~ max 750bar(11,000psig)
With DRASTAR’s patented (patent #10-1370537) “ push and lock type handle ”, you can operate it easily and stably; “locking” by pushing down the handle will prevent any slight change of pre-set pressure value, which could possibly be caused by any vibration from gas pipeline or ambient applications and the other way “unlocking” by pulling it back enables you to adjust the pressure value freely again.
Ordering Information.
DVS-020-VH-AP4
BASIC
SERIES
NUMBERBODY
MATERIALWORKING
PRESSURECONNECTION
BODY
POLISHING
BODY
SIZE
20, 50bar
PCTFE
250, 500
750bar
Vesple S = STS 316L
Single melt
D = STS 316L
Double melt
020 = 20bar
050 = 50bar
250 = 250bar
500 = 500bar
750 = 750bar
VH = VCR Male
VM = VCR Male
Rotatable
VF = VCR Female
Rotatable
TS = Tube Butt
weld
LO = Lock
NP = NPT
PT = PT AP = AP(Ry ≤ 25㎛)
BA = BA(Ry ≤ 3.0㎛)
EP = EP(Ry ≤ 0.7㎛)
4 = 1/4"
8 = 3/8"
2 = 1/2"
3 = 3/4"
Specification.
Ports Size 1/4" 1/2" 3/4" Cv Value 0.4 1.2 2.8 Design Proof Pressure 150% maximun rated Grade AP (Ry ≤ 25㎛)
BA (Ry ≤ 3.0㎛)
EP (Ry ≤ 0.7㎛) Seat Material(DISK) PCTFE / VESPEL Body Material Stainless Steel 316L
or
Stainless Steel 316L Double melt Handle Material Aluminum Max. Working
Pressure Range 20bar, 50bar, 250bar, 500bar, 750bar Operating Temperature -40°C ~ +70°C (-40°F ~ +165°F) Standard
+250°C ~ +500°C (+328°F ~ +1000°F) Optional