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SERIES BYS & SYS
BRASS OR STAINLESS STEEL Y-STRAINERS
Cost Effective, Excellent Filtration, High Flow
Strainers
Valves, Globe /
SYSBYS ++
The Series BYS & SYS Brass or Stainless Steel Y-Strainers are a cost effective
option for use in any type of industrial application. Versatile Y conguration and
availability in a wide range of sizes allow for many different uses. Body, cap, and plug
are made from either a high quality brass or stainless steel to ensure reliability. The
seal is constructed of PTFE to ensure long service life. The stainless steel strainer
provides excellent ltration to help prevent damage to valves, meters, etc. from rust
and dirt, without sacricing high ow characteristics.
BENEFITS/FEATURES
• Cost effective
• Stainless steel strainer
APPLICATIONS
• Ideal for installations upstream to proect pumps, control valves, regulators, etc from
rust, pipe scale dirt
DWYER INSTRUMENTS, LLC | dwyer-inst.com430
NPT
CONNECTION
BYS DIMENSIONS
NPT
SizeAin [mm]
1/4˝
1-31/32 [50.04]
3/8˝
1-31/32 [50.04]
1/2˝
1-31/32 [50.04]
3/4˝
2-23/64 [59.94]
1˝
2-41/64 [67.06]
1-1/4˝
3-3/16 [81.03]
1-1/2˝
3-7/16 [87.12]
2˝
4-19/64 [108.97]
SYS DIMENSIONS
NPT
SizeAin [mm]
B
1/4˝
2-33/64 [64.00]
3/8˝
2-33/64 [64.00]
1/2˝
2-33/64 [64.00]
3/4˝
3-1/16 [78.00]
1˝
3-35/64 [90.00]
1-1/4˝
4-11/64 [106.00]
1-1/2˝
4-11/16 [119.00]
2˝
5-33/64 [140.00]
SPECIFICATIONS
Service: Gases, steam and liquids compatible with wetted materials.
End Connections: Female NPT.
Pressure Limits: See model chart.
Temperature Limits: -10 to 250°F (-23 to 121°C).
Wetted Materials: BYS: Valve body: Cast brass; Cap and plug: Brass; Screen: SS;
Seal: PTFE; SYS: Valve body and cap: Cast 316 SS (CF8M); Plug and screen: 316
SS; Seal: PTFE.
MODEL CHART
Model Pipe Size Max. Pressure Model Pipe Size Max. Pressure
BYS-00
BYS-01
BYS-02
BYS-03
BYS-04
BYS-05
BYS-06
BYS-07
1/4˝
3/8˝
1/2˝
3/4˝
1˝
1-1/4˝
1-1/2˝
2˝
++USA: California Proposition 65
WARNING: This product can expose you to chemicals including Lead, which is known to the State
of California to cause cancer and birth defects or other reproductive harm. For more information go
to www.P65Warnings.ca.gov.
400 psi (27.6 bar)
400 psi (27.6 bar)
400 psi (27.6 bar)
400 psi (27.6 bar)
300 psi (20.7 bar)
300 psi (20.7 bar)
300 psi (20.7 bar)
300 psi (20.7 bar)
SYS-00
SYS-01
SYS-02
SYS-03
SYS-04
SYS-05
SYS-06
SYS-07
1/4˝
3/8˝
1/2˝
3/4˝
1˝
1-1/4˝
1-1/2˝
2˝
B
in [mm]
2-11/16 [68.07]
2-11/16 [68.07]
2-11/16 [68.07]
3-59/64 [99.57]
4-17/32 [115.06]
5-25/64 [136.91]
6-17/64 [159.00]
7-31/64 [189.99]
B
in [mm]
1-27/32 [46.99]
1-27/32 [46.99]
1-27/32 [46.99]
2-15/64 [56.90]
2-41/64 [67.06]
2-53/64 [71.88]
3-5/32 [80.01]
3-21/32 [92.96]
800 psi (55.2 bar)
800 psi (55.2 bar)
800 psi (55.2 bar)
800 psi (55.2 bar)
800 psi (55.2 bar)
800 psi (55.2 bar)
800 psi (55.2 bar)
800 psi (55.2 bar)
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