Relief / Back Pressure Reducing Regulators- 077 Low Pressure – MAKGIL - HỆ THỐNG CUNG CẤP VẬT TƯ CÔNG NGHIỆP SỐ 1 VIỆT NAM
Danh mục sản phẩm

Relief / Back Pressure Reducing Regulators- 077 Low Pressure

Mã sản phẩm: 077 Low Pressure
Nhà sản xuất: Drastar
Giá liên hệ
  • Vận chuyển: Phí vận chuyển tùy thuộc vào đơn hàng

Products Feature

Relief / Back Pressure Regulators(NPT 1/4”) 

077 Series is a 1/4” NPT type relief/back-pressure regulator suitable for water, chemical, liquid, gas, etc. Regulator’s body is made of brass (077B) or stainless steel 316L (077S) and 077 Series can be used for very low pressure of 0.3bar (5psig) up to 20 bar(290 psig). 

★ 1/4” NPT type back-pressure regulator 
★ Push and lock type handle (DRASTAR patent #10-1086199) mounted 
★ Controlled pressure ranges: 0.2bar~2bar, 0.5bar~5bar, 1bar~10bar, 2bar~25bar 
★ Panel mounting nut or wall mounting bracket as option 
★ Design proof pressure: 150% of maximum rated 
★ Applicable for water, chemical, liquid, gas, etc. 
★ W077S-0000x-1S: W model is only for liquid or water 

With DRASTAR’s patented (patent #1086199) “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. 

[DRASTAR Regulators are Oil-free] 
DRASTAR’s all pressure regulators are assembled, cleaned, inspected, and packed in clean-rooms 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.

(W) 077S-002A-1SH-H1
077 SeriesS = Stainless 
     Steel 316L

002 = 2bar(30psi) 

005 = 5bar(72psi) 

010 = 10bar(145psi) 

025 = 25bar(362psi)  


A = 2Ports 
L = 3Ports 
C = 4Ports 
R = 3Ports 
M = 4Ports 

2 = 2Ports 
3 = 3Ports 



1S = NPT1/4" 
Cv = 0.2 Standard 


NP4 = NPT1/4"  

steel 316L 

H = C22 



H1 = 120°C 

H2 = 250°C 

H3 = 350°C



※ Note: 1) (W) model is only for liquid and water. 
               2) H1, H2, H3 option is not available for brass products.




 NPT 1/4" Female 
 077S-xxxA-1S   2-Ports 
 077S-xxxL-1S   3-Ports 
 077S-xxxC-1S  4-Ports

 Design Proof Pressure

 150% maximun rated

 Leak Rate  Certification

 to 2 x 10 -8 atm cc/sec Helium available.

 Body Materials

 077S-xxxA-1S   Stainless steel 316L 
 077B-xxxA-1S   Nickel Plated Brass

 Bonnet Material

 Nickel Plated Brass (077SS / Stainless steel 316L Optional)


 077S-xxxA-1S   Stainless steel 316L 
 077S-xxxA-1SH   Hastelloy-C22 Optional

 Main Valve

 Stainless steel 316L

 Valve Spring

 Stainless steel 316L

 Valve Seat

 Teflon (Kel-F, Polyimide, etc.. Optional)

 Outlet Pressure  Ranges

 077S-002x-1S   2bar(25psi) 
 077S-005x-1S   5bar(70psi) 
 077S-010x-1S   10bar(145psi) 
 077S-025x-1S   25bar(362psi)  

 Operating  Temperature

 -40°C ~ +70°C (-40°F ~ +165°F)   Standard 
 077S-002x-1S-H1 +120°C   Optional 
 077S-002x-1S-H2 +250°C   Optional 
 077S-002x-1S-H3 +350°C   Optional 
 +250°C ~ +540°C (+328°F ~ +1000°F)   Optional

 Flow Capacity

 Cv=0.2 Standard  

 Standard Optional

 Inlet and Outlet Gauge etc..



Each product is manufactured into consideration of the best safety and easy manipulation. However in order to use the regulator in most safe, effective, precise and smooth way and prolong its life time, you are recommended to use the actual pressure within the range of 25% ~ 75% of its rated pressure.


[ Unit conversion program ]

unitunit conversion
Pound per Squire InchPSI (= lb/in^2)
dyne per square centimeterdyne/cm^2
Newton per square meterN/m^2
Hecto PascalhPa
Kilo PascalkPa
Mega PascalMPa
수주(水柱)밀리미터mm H_2O (= mm Aq)
수주(水柱)인치in H_2O (= in Aq)
수은주(水銀柱)밀리미터mm Hg (= Torr)
수은주(水銀柱)인치in Hg
PDF Catalogue