Skip to content
Login for the best B2B Wholesale Experience.
Login for the best B2B Wholesale Experience.
B-3BS4-B-SL Breco by Foster | Hose Stem w/ Sleeve Lock | B Series | 3/8" Socket x 1/2" Hose Stem | Straight | Brass

B-3BS4-B-SL Breco by Foster | Hose Stem w/ Sleeve Lock | B Series | 3/8" Socket x 1/2" Hose Stem | Straight | Brass

Save $8.54 Save $8.54
$27.15
$27.15 - $27.15
$27.15
$18.61
$18.61 - $18.61
$18.61

Foster Quick Disconnects - 3 & B Series 3/8" 1-Way Automatic Sockets - Breco
Specifications for Variant SKU: B-3BS4-B-SL ZSi-Foster
Brand: Breco
Series: B Series
Shape (Orientation): Straight
Material(s): Brass
Seal Material(s): Buna-N/Nitrile Rubber
Features:
  • High flow metal valves.
  • Precision molded seals form a "bubble tight" seal for reliable operation within rated working pressures. Nitrile (Buna-N) seals are standard. EPDM, Viton and Neoprene seals are available as options.
  • Proven ball locking mechanism with large numbers of stainless steel locking balls evenly distribute the load to resist wear and provide positive connections and allow a swiveling action to reduce hose torque.
  • Integral sleeve guard protects the sleeve and resists accidental disconnects for the "SG" series.
  • Knurling and/or grooves on the sleeve provide a gripping surface for ease of operation.
  • Wide range of body sizes, materials, options and end terminations are available to meet specific needs.
  • Accepts Industrial Interchange Plug.
  • Operation: Sleeve type couplings are widely used to connect air and low pressure fluid lines. Their compact and economical design uses a ball locking mechanism consisting of captive stainless steel balls that engage the locking groove on the mating plug. The sliding spring loaded sleeve on the socket must be manually retracted in order to connect or disconnect the plug.
  • Working Pressure: 300 PSIG; vacuum to 26" Hg
  • Interchangeability: Complies with ANSI/NFPA T3.20.14-1990 & IS0 6150-B
Specifications Body Size
1/4" 3/8" 1/2"
Rated Pressure (psi) 300 300 300
Temp. Range (Buna-N Seal) -40 deg. to +250 deg. F
Locking Device Stainless Steel Balls
Vacuum Data (inches Hg)
-- Disconnected (coupler only) Not Recommended
-- Connected 27.4 27.4 27.4
Approximate CFM at 100 (psi) 37 70 150
Female CouplerPart Number Brand Male PlugPart Number Size Description
FM4604 Foster 46-4 1/4" Brass
B-3BS2-B Breco B-B3S2-S 1/4" Steel
SL4604 Foster - 1/4" Sleeve Lock Brass
FM4704 Foster 47-4 5/16" Brass
SL4704 Foster - 5/16" Sleeve Lock, Brass
FM4804 Foster 48-4 3/8" Brass
B-3BS3-B Breco B-B3S3-S 3/8" Brass
SL4804 Foster - 3/8" Sleeve Lock Brass
B-3BS3-B-SL Breco - 3/8" Brass with Sleeve Lock
FM4804H Foster - 3/8" For Heat, Viton Seal
FM4804W Foster - 3/8" For Water, Brass/SS, Buna-N Seal
FM4904 Foster 49-4 1/2" Brass
B-3BS4-B Breco B-B3S4-S 1/2" Brass
SL4904 Foster - 1/2" Sleeve Lock Brass
B-3BS4-B-SL Breco - 1/2" Brass with Sleeve Lock
FM4904W Foster - 1/2" For Water, Brass/SS, Buna-N Seal
Requires Hose Clamp [1] Swivel Plugs - Eliminates hose twist on end drop applications such as blow guns, air tools, etc. [2] Ball Lock (BL) - Locks manual socket against accidental disconnect. [3] Sleeve Lock (SL) - Locks 1 way Automatic Socket against accidental disconnect.

ZSi Foster

ZSi-Foster is a leading manufacturer and supplier of highly engineered, mission critical clamping and coupling devices as well as USA-manufactured strut and strut accessories. Our clamping products are specified for the most demanding environments and applications to eliminate damage due to vibration, shock, surge and corrosion and to eliminate unwanted noise. Our coupler products provide the highest quality connections for pipe, tube and hose in hydraulic and pneumatic applications.

Shop Parts by ZSi Foster