Dome Bias Semi-Automatic Manifold

GM1
GM1 inside
Title:
Dome Bias Semi-Automatic Manifold
GM1 Series

GM1 series dome-bias semi- automatic manifold system is designed to provide an uninterrupted gas supply. It consists of a primary bank and a reserve bank of cylinders. When the pressure in the primary cylinder bank reduces the preset value, the changeover takes place automatically to provide continuous supply of gas from the reserve bank. The priority handle should be manually switched during cylinder change.

 

Features

Semi-automatic Changeover System

• Fully enclosed, dust-proof metal cabinet

• Pressure gauge indicates gas source and outlet pressure

• Secondary regulator for consisent pressure and flow delivery to the pipeline

• Relief valve at outlet for protecting downstreampiping

• Pressure switch port is available

• Mechanical dome-dias changeover design

• Prior indicator valve

• Suitable for high flow systems; rated for 120m3/h (4200SCFH)* to 170m3/h (6000 SCFH)**

* When delivery pressure is 50 psi

** When delivery pressure is 180 psi

Pipeline

Silver brazing on piping joints for maximum leak prevention

System is designed to accommodate future expanison needs

Optional external filter provides easy replacement of filter element

Optional master shutoff valves

Headers have been tested to withstand high cylinder pressure

• Wall or floor mount available

GM1-AL- O2- U- ( 5L - 5R- S2 )
SeriesDelivery PressureGas ServiceStandard Code

Number of Cylinders

Manifold System Layout

Cylinder Valve Spacing
GM1-A

USA Standard   

L: 55 psi (380 MPa)

M: 100 psi (690 MPa) 

H: 185 psi (1270 MPa) 

 

EN Standard 

L: 72.5 psi (5 bar)

M: 116 psi (8 bar)

H: 145 psi (10 bar)

O2: Oxygen

AIR: Air

CO2: Carbon Dioxide

IN: Argon, Helium, Nitrogen

E: ISO 32

U: NFPA 99 (USA)

1L-2R: One cylinder on the left, Two cylinders on the right

5L-5R: Five cylinders on the left, Five cylinders on the Right

0-0: Left and Right side each with filter and master shutoff valve

Note: Direction of piping (Right or Left) is indicated by facing the manifold.

S: Standard layout

L: "L" Shape layout

U: "U" shape layout

D: Crossover layout

X: Staggered layout

1: 5" (127 mm)

2: 10" (254 mm)

3: 13" (330 mm)

4: 18" (457 mm)

Example: GM1-AL-O2-U-(5Lx5R-S2) indicates a 5*5 oxygen cylinder semi-automatic manifold system. Distance between two cylinders is 10” on standard horizontal layout. GM1-AL-O2-U-(0x0) indicates an oxygen changeover system with filters and master shutoff valves. GM1-AL-O2-U indicates an oxygen changeover system only.

 

SeriesGas ServiceMax. Inlet Pressure psi (bar)Delivery Pressure psi (bar)Max. Delivery Flow SCFH (m3/h)Outlet ConnectionPigtail Specifications
GM1-AL-O2Oxygen3000 (207)10~145 (0.69~10)4200 (120)3/4" NPT (M)Pigtail, CGA540
GM1-AM-INInert Gas3000 (207)10~230 (0.69~15.86)6000 (170)3/4" NPT (M)Pigtail, CGA580
GM1-AM-CO2Carbon Dioxide2175 (150)4.4~125 (0.3~8.62)1060 (30)3/4" NPT (M)Pigtail, CGA320
GM1-AH-AIRAir3000 (207)10~203 (0.69~14)5300 (150)3/4" NPT (M)Pigtail, CGA346

* Connections can be changed to meet DIN, BS or other standards

 

• 24" or 36" flexible high pressure stainless steel braided pigtails with check valve

• Rigid copper pigtails are standard when gas service is oxygen

• Carbon Dioxide manifold systems are provided with H900G electric gas heater

• Siphon-type cylinder should not be used in the manifold system

Gas ServiceW in.(mm)H1 in.(mm)H2 in.(mm)
Oxygen, Air, Argon, Nitrogen, Helium41.3 (1050)15.8 (400)55.1 (1400)
Carbon Dioxide56.3 (1430)15.8 (400)55.1 (1400)

 

Standard Layout"L" Shape Layout"U"Shape LayoutCrossover LayoutStaggered Layout