Series 21 Poppet Valves for Line Mounting
Single Solenoid Pilot Controlled
2/2 Valves
2/2 Normally Open (NO)2/2 Normally Closed (NC)
Port Type H Type O Avg. C
Valve Model Number
Dimensions inches (mm)
V
Weight
Size NC NO NC NO NC NO A B C lb (kg)
1/4 2171B2001 2172B2001 2171B2002 2172B2002 2.3 2.3 3.6 (90) 3.0 (76) 7.0 (178) 3.0 (1.4)
3/8 2171B3001 2172B3001 2171B3002 2172B3002 3.8 3.3 3.6 (90) 3.0 (76) 7.0 (178) 3.0 (1.4)
1/2 2171B4011 2172B4011 2171B4012 2172B4012 4.0 3.5 3.6 (90) 3.0 (76) 7.0 (178) 3.0 (1.4)
1/2 2171B4001 2172B4001 2171B4002 2172B4002 7.7 6.5 4.6 (116) 3.0 (76) 7.7 (196) 3.3 (1.5)
3/4 2171B5001 2172B5001 2171B5002 2172B5002 9.0 7.3 4.6 (116) 3.0 (76) 7.7 (196) 3.3 (1.5)
1 2171B6011 2172B6011 2171B6012 2172B6012 9.0 7.9 4.6 (116) 3.0 (76) 7.7 (196) 3.3 (1.5)
1 2171B6001 2172B6001 2171B6002 2172B6002 24 21 6.6 (168) 4.1 (104) 10.5 (266) 7.5 (3.4)
1¼ 2171B7001 2172B7001 2171B7002 2172B7002 29 20 6.6 (168) 4.1 (104) 10.5 (266) 7.5 (3.4)
1½ 2171B8011 2172B8011 2171B8012 2172B8012 29 21 6.6 (168) 4.1 (104) 10.5 (266) 7.5 (3.4)
3/2 Valves
3/2 Normally Open (NO)3/2 Normally Closed (NC)
Valve Model Number
Port Sizes Type H Type O Avg. C
In-Out Exh. NC NO NC NO NC NO A B C lb (kg)
1/4 1/2 2173B2001 2174B2001 2173B2002 2174B2002 2.8 2.5 3.6 (90) 3.6 (90) 7.3 (186) 3.0 (1.4)
3/8 1/2 2173B3001 2174B3001 2173B3002 2174B3002 4.0 3.0 3.6 (90) 3.6 (90) 7.3 (186) 3.0 (1.4)
1/2 1/2 2173B4011 2174B4011 2173B4012 2174B4012 3.8 3.0 3.6 (90) 3.6 (90) 7.3 (186) 3.0 (1.4)
1/2 1 2173B4001 2174B4001 2173B4002 2174B4002 7.8 7.2 4.6 (116) 4.6 (117) 8.0 (203) 3.3 (1.5)
3/4 1 2173B5001 2174B5001 2173B5002 2174B5002 9.4 7.2 4.6 (116) 4.6 (117) 8.0 (203) 3.3 (1.5)
1 1 2173B6011 2174B6011 2173B6012 2174B6012 10 7.2 4.6 (116) 4.6 (117) 8.0 (203) 3.3 (1.5)
1 1½ 2173B6001 2174B6001 2173B6002 2174B6002 29 21 6.6 (168) 6.6 (168) 10.5 (266) 7.5 (3.4)
1¼ 1½ 2173B7001 2174B7001 2173B7002 2174B7002 31 22 6.6 (168) 6.6 (168) 10.5 (266) 7.5 (3.4)
1½ 1½ 2173B8011 2174B8011 2173B8012 2174B8012 31 21 6.6 (168) 6.6 (168) 10.5 (266) 7.5 (3.4)
Dimensions inches (mm)
V
Weight
4/2 Valves
Port Sizes Valve Model Avg. Dimensions inches (mm) Weight
In-Out Exh. Number C
1/4 1/2 2176B2001 2176B2002 2.5 3.8 (97) 3.9 (99) 7.7 (196) 3.0 (1.4)
3/8 1/2 2176B3001 2176B3002 3.6 3.8 (97) 3.9 (99) 7.7 (196) 3.0 (1.4)
1/2 1/2 2176B4011 2176B4012 3.7 3.8 (97) 3.9 (99) 7.7 (196) 3.0 (1.4)
1/2 1 2176B4001 2176B4002 6.9 5.2 (132) 4.6 (104) 9.7 (246) 5.8 (2.6)
3/4 1 2176B5001 2176B5002 8.2 5.2 (132) 4.6 (104) 9.7 (246) 5.8 (2.6)
1 1 2176B6011 2176B6012 8.9 5.2 (132) 4.6 (104) 9.7 (246) 5.8 (2.6)
1 1½ 2176B6001 2176B6002 23 8.2 (208) 6.5 (165) 11.1 (282) 12.0 (5.4)
1¼ 1½ 2176B7001 2176B7002 24 8.2 (208) 6.5 (165) 11.1 (282) 12.0 (5.4)
1½ 1½ 2176B8011 2176B8012 25 8.2 (208) 6.5 (165) 11.1 (282) 12.0 (5.4)
STANDARD SPECIFICATIONS: See page 7.
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
8 © 2009, ROSS CONTROLS®.
V
All Rights Reserved.
A B C lb (kg)
Series 21 Poppet Valves for Line Mounting
Single Pressure Controlled
2/2 Valves
2/2 Normally Open (NO)
Weight
Valve Model Number
Port Type H Type O Avg. C
2/2 Normally Closed (NC)
Dimensions inches (mm)
V
Size NC NO NC NO NC NO A B C lb (kg)
1/4 2151B2001 2152B2001 2151B2002 2152B2002 2.3 2.3 3.6 (90) 3.7 (94) 3.0 (94) 1.8 (0.8)
3/8 2151B3001 2152B3001 2151B3002 2152B3002 3.8 3.3 3.6 (90) 3.7 (94) 3.0 (94) 1.8 (0.8)
1/2 2151B4011 2152B4011 2151B4012 2152B4012 4.0 3.5 3.6 (90) 3.7 (94) 3.0 (94)) 1.8 (0.8)
1/2 2151B4001 2152B4001 2151B4002 2152B4002 7.7 6.5 4.6 (116) 4.4 (112) 3.0 (94) 4.5 (2.0)
3/4 2151B5001 2152B5001 2151B5002 2152B5002 9.0 7.3 4.6 (116) 4.4 (112) 3.0 (94) 4.5 (2.0)
1 2151B6011 2152B6011 2151B6012 2152B6012 9.0 7.9 4.6 (116) 4.4 (112) 3.0 (94) 4.5 (2.0)
1 2151B6001 2152B6001 2151B6002 2152B6002 24 21 6.6 (168) 7.5 (190) 4.1 (104) 11.0 (5.0)
1¼ 2151B7001 2152B7001 2151B7002 2152B7002 29 20 6.6 (168) 7.5 (190) 4.1 (104) 11.0 (5.0)
1½ 2151B8011 2152B8011 2151B8012 2152B8012 29 21 6.6 (168) 7.5 (190) 4.1 (104) 11.0 (5.0)
3/2 Valves
3/2 Normally Closed (NC)
Valve Model Number
Port Sizes Type H Type O Avg. C
Dimensions inches (mm)
V
In-Out Exh. NC NO NC NO NC NO A B C lb (kg)
1/4 1/2 2153B2001 2154B2001 2153B2002 2154B2002 2.8 2.5 3.6 (90) 4.0 (101) 3.1 (79) 1.8 (0.8)
3/8 1/2 2153B3001 2154B3001 2153B3002 2154B3002 4.0 3.0 3.6 (90) 4.0 (101) 3.1 (79) 1.8 (0.8)
1/2 1/2 2153B4011 2154B4011 2153B4012 2154B4012 3.8 3.0 3.6 (90) 4.0 (101) 3.1 (79) 1.8 (0.8)
1/2 1 2153B4001 2154B4001 2153B4002 2154B4002 7.8 7.2 4.6 (116) 4.7 (120) 3.6 (91) 4.5 (2.0)
3/4 1 2153B5001 2154B5001 2153B5002 2154B5002 9.4 7.2 4.6 (116) 4.7 (120) 3.6 (91) 4.5 (2.0)
1 1 2153B6011 2154B6011 2153B6012 2154B6012 10 7.2 4.6 (116) 4.7 (120) 3.6 (91) 4.5 (2.0)
1 1½ 2153B6001 2154B6001 2153B6002 2154B6002 29 21 6.6 (168) 7.5 (190) 4.8 (123) 11.0 (5.0)
1¼ 1½ 2153B7001 2154B7001 2153B7002 2154B7002 31 22 6.6 (168) 7.5 (190) 4.8 (123) 11.0 (5.0)
1½ 1½ 2153B8011 2154B8011 2153B8012 2154B8012 31 21 6.6 (168) 7.5 (190) 4.8 (123) 11.0 (5.0)
3/2 Normally Open (NO)
Weight
4/2 Valves
Port Sizes Valve Model Avg. Dimensions inches (mm) Weight
In-Out Exh. Number C
V
A B C lb (kg)
1/4 1/2 2156B2001 2156B2002 2.5 3.8 (97) 7.7 (196) 3.9 (99) 3.0 (1.4)
3/8 1/2 2156B3001 2156B3002 3.6 3.8 (97) 7.7 (196) 3.9 (99) 3.0 (1.4)
1/2 1/2 2156B4011 2156B4012 3.7 3.8 (97) 7.7 (196) 3.9 (99) 3.0 (1.4)
1/2 1 2156B4001 2156B4002 6.9 5.2 (132) 9.7 (246) 4.6 (104) 5.8 (2.6)
3/4 1 2156B5001 2156B5002 8.2 5.2 (132) 9.7 (246) 4.6 (104) 5.8 (2.6)
1 1 2156B6011 2156B6012 8.9 5.2 (132) 9.7 (246) 4.6 (104) 5.8 (2.6)
1 1½ 2156B6001 2156B6002 23 8.2 (208) 11.1 (282) 6.5 (165) 12.0 (5.4)
1¼ 1½ 2156B7001 2156B7002 24 8.2 (208) 11.1 (282) 6.5 (165) 12.0 (5.4)
1½ 1½ 2156B8011 2156B8012 25 8.2 (208) 11.1 (282) 6.5 (165) 12.0 (5.4)
STANDARD SPECIFICATIONS: For valves on this page.
Ambient/Media Temperatures:
Type H: 0° to 300°F (-17° to 150°C).
Type O: -40° to 175°F (-40° to 80°C).
For temperatures below 40°F (4°C) air must be free of water vapor
Flow Media: Filtered air; 5 micron recommended.
Inlet Pressure: 30 to 150 psig (2 to 10 bar).
Pilot Pressure: Must be equal to or greater than inlet pressure.
Threads: Model numbers above specify NPT pressure port threads.
For other threads, consult ROSS.
to prevent formation of ice.
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
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