The poppet in this miniature shuttle valve is biased so that the emergency port (E) is normally closed and the normal (N) and service (S) ports are connected. It is ideal for applications with flow rates up to 6 GPM. Integral safety screens are included for added protection against rogue contamination or debris.
- Type: Spring-Biased
- Diameter: 0.281 inches
- Lohm Rate: 180 Lohms max.
- Maximum Working Pressure: Up to 4000 psi
General Performance
- Normal Flow Rate (N to S or S to N): 180 Lohms max.
- Emergency Flow Rate (E to S): 180 Lohms max.
- Maximum Rated Flow: 6.0 GPM
- Shuttling Pressure: 15 psid (min.) 40 psid (max.)
- Maximum Leakage: (N to E or E to N at 4000 psid): 5 Drops / Hour after 2 Minute wait
- Screen Hole Size: 0.008 inches Nominal
- Nominal System Pressure: up to 4000 psi
- Nominal Weight: 5.0 grams
- Test Fluid: MIL-PRF-83282 at 85°F
Materials
- Body – Rear: 304L CRES (AMS 5647)
- Body – Front: 15-5PH CRES (AMS 5659)
- Pin: 303 CRES (QQ-S-763C)
- Spring: 17-7PH CRES (AMS 5678)
- Poppet: 440C CRES (AMS 5630)
- Nose Seal: 6061-T6 Al (AMS 4117)
- Barrel Screen: 15-5PH CRES (AMS 5659)
- Screens: 304L CRES (QQ-S-766)
- Base Washers: 304L CRES (QQ-S-766)
- Braze: (AMS 4774)
Finish: All CRES parts passivated. Pins are pre-waxed. Do not degrease. Do not lubricate.
Replacement Parts & Accessories
- CUTA2810137C: Installation / Extraction Tool Set
- PRFA2810003A: Replacement Pin
- SVBA2810009B: Replacement Nose Seal
Key Product Facts
- Type: Spring-Biased
- Diameter: 0.281 inches
- Lohm Rate: 180 Lohms max.
- Maximum Working Pressure: Up to 4000 psi
Cross Section View, Dimensional View, Installation Hole Details: See images in the gallery for reference. All dimensions are in inches.
Installation Procedure: PS J2374 Rev A: Installation of 3-Port Inserts
Installation & Manufacturing Tools: CUTA2810137C: Installation and Extraction Tool Set Drawing
CAD Envelope: 281 Screened Spring-Biased Shuttle Valve Model (downloadable from the site)
Handbook Reference: Technical Hydraulic Handbook of Aerospace, Energy, and Motorsport Solutions Page G10-G11
Technical Specifications:
- Normal Flow Rate (N to S or S to N): 180 Lohms max.
- Emergency Flow Rate (E to S): 180 Lohms max.
- Maximum Rated Flow: 6.0 GPM
- Shuttling Pressure: 15 psid (min.) 40 psid (max.)
- Maximum Leakage: (N to E or E to N at 4000 psid): 5 Drops / Hour after 2 Minute wait
- Screen Hole Size: 0.008 inches Nominal
- Nominal System Pressure: up to 4000 psi
- Nominal Weight: 5.0 grams
- Test Fluid: MIL-PRF-83282 at 85°F