DR70 Series is a NPT or BSP type single-stage high flow pressure reducing regulator suitable for pipeline application where high flow of water, chemical, liquid and gases are being used. Drop-preventing function of DR70 series enables stable and precise regulation of outlet pressure even facing with wide pressure variation at P1.
◈ 1/2”, 3/4”, 1” NPT or BSP type available
◈ Drop-preventing function is built in
◈ Suitable for the industrial control
◈ Inlet pressures are 420bar(6000psi) or 100bar(1450psi) and outlet pressures are 10bar(145psig), 25bar(360psig), 50bar(720psig), 70bar(1000psig), 150bar(2100psig), 250bar(3600psig), and 350bar(5000psig)
◈ Panel mounting and wall mounting bracket available as option
◈ Design proof pressure: 150% of maximum rated
[DRASTAR Regulators are Oil-free]
※ DRASTAR’s all pressure regulators are assembled, cleaned, inspected, and packed in clean-room equipped with clean bench, helium detector, particle counter, ultrasonic cleaner, ultrapure water system, vacuum packaging machine, etc. through oxygen cleaning procedure in compliance with process and regulations indicated in CGA 4.1. and or ASTM G-93 and are free of any grease or oils.
※ Caution: Filtering (gas 7㎛ ~ 15㎛, water 15㎛ ~ 80㎛) is a MUST to use in the general gas application other than high purity gases. Otherwise, it may cause a failure to the regulators. It is strongly recommended to install filter for extension of life span and saving the maintenance expense.
Ordering Information.
DR702-SP-010-NP2-V-H1BASIS
SERIES
NUMBERBODY
MATERIALVALVE
SEATCONTROLLED
PRESSURE
RANGEINLET
OUTLET
PORTSINLET
OUTLET
PORTS SIZESELF
VENTINGHIGH
TEMPE-
RATUREDR701 =
Bolt Control
DR702 =
Knob ControlB = Brass
100bar (1500psi)
S = STS 316L
200bar (3000psi)
SH = STS 316L
420bar (6000psi)P = Teflon
V = Vespel
SH model
Vespel
Standard
010=10bar(145psi)
025=25bar (362psi)
050=50bar(725psi)
070=70bar(1000psi)
SH model ONLY
150=150bar(2100psi)
250=250bar(3600psi)
350=350bar(5000psi)
NP = NPT
BS = BSP1 = 1/2"
2 = 3/4"
3 = 1"V = Self-
Venting
OptionalH1 = 120°C
H2 = 250°C
H3 = 320°C
Optional ※Note : Self-venting option (V) is not applicable for high pressure of 150bar/250bar/350bar for safety reasons.
Specification
Ports
3/4", 1" Female NPT & BSP
DR702-xx-0xx-NPx NPT
DR702-xx-0xx-BSx BSP
With Pressure gauge, Filter, Male connect (Optional)
Design Proof Pressure
150% maximun rated
Leak Rate Certification
to 2 x 10-8 atm cc/sec Helium available.
Body Materials
DR702-Sx-010-NP3 Stainless steel 316L
DR702-Bx-010-NP3 Nickel Plated Brass
Bonnet Material
Nickel Plated Brass (Stainless steel 316L Optional)
Diaphragm
Stainless steel 316L
Main Valve
Stainless steel 316L
Valve Spring
Stainless steel 316L
Valve Seat
Teflon Standard
Vespel Optional
DR70x-SHV-xxx-xxx model Only Vespel
Outlet Pressure Ranges
DR702-Sx-010-xxx 10bar(145psi)
DR702-Sx-025-xxx 25bar(360psi)
DR702-Sx-050-xxx 50bar(7205psi)
DR702-Sx-070-xxx 70bar(1000psi)
DR702-SHV-150-xxx 150bar(2100psi) SH model Only
DR702-SHV-250-xxx 250bar(3600psi) SH model Only
DR702-SHV-350-xxx 350bar(5000psi) SH model Only
Operating Temperature
-40°C ~ +70°C (-40°F ~ +165°F) Standard
DR702-Sx-010-NP3-H1 +120°C Optional
DR702-Sx-010-NP3-H2 +250°C Optional
DR702-Sx-010-NP3-H3 +320°C Optional
+400°C ~ +540°C (+750°F ~ +1000°F) Optional
Flow Capacity
Cv=3.5 Standard
Standard Optional
Panel mounting bracket
Outlet Gauge etc..
Weight
5.4kg
Recommendations to Use
Each product is manufactured since being taken into consideration of the best safety and easy manipulation. However in order to use the regulator in most safe and effective way, you are recommended to use the actual pressure within the range of its 25% ~ 75%. For making precise, smooth movement and to prolong product life, strongly recommended to make a use within above mentioned range.