High Pressure & High FlowDrastar Co., Ltd

DR70 Series

High Flow Pressure Reducing Regulators

Products Feature

High Flow and High Pressure Regulators(NPT or BSP 1/2″ 3/4″ 1″)

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

010

BASIS SERIES NUMBER	BODY MATERIAL	VALVE SEAT	CONTROLLED PRESSURE RANGE	INLET OUTLET PORTS	INLET OUTLET PORTS SIZE	SELF VENTING	HIGH TEMPE- RATURE
DR701 = Bolt Control DR702 = Knob Control	B = 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 = BSP	1 = 1/2" 2 = 3/4" 3 = 1"	V = Self- Venting Optional	H1 = 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
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.

[ Unit conversion program ]

	unit	unit conversion
atmosphere	atm
bar	bar
mbar	mbar
kg_f/cm^2	kg_f/cm^2
Pound per Squire Inch	PSI (= lb/in^2)
dyne per square centimeter	dyne/cm^2

Pascal	Pa
Newton per square meter	N/m^2
Hecto Pascal	hPa
Kilo Pascal	kPa
Mega Pascal	MPa

수주(水柱)밀리미터	mm H_2O (= mm Aq)
수주(水柱)인치	in H_2O (= in Aq)
수은주(水銀柱)밀리미터	mm Hg (= Torr)
수은주(水銀柱)인치	in Hg