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Vol <br />Hydraulic Quick Couplings <br />Couplers <br />Female Pipe Thread <br />Male Pipe Thread <br />=2 <br />High Flow Couplings <br />ST Series <br />Features <br />• The smooth, open bore with no valving in either half offers <br />minimal pressure drop and allows easy cleaning in applica- <br />tions where the same lines are used for more than one <br />media. <br />• ST couplers and nipples are machined from solid barstock, <br />providing a quality coupling that is durable. ST couplers are <br />available in brass and 303 stainless steel as standard <br />product materials. <br />• ST nipples are available in 303 stainless steel, brass and <br />zinc -plated steel. The ball locking grooves of the steel ST <br />nipples are case hardened for resistance to brinelling <br />where high cycle rates and pressure surges are <br />encountered. <br />• The ST is an "Interchange" coupling since it dimensionally <br />and functionally interchanges with similar couplings made <br />by other manufacturers. <br />Special Order Information <br />All sizes of ST Series can be furnished with locking sleeves. <br />Place suffix letters "SL" (Sleeve-Lok) after regular catalog <br />numbers. Example: SST-4MSL. Standard seal material is <br />Nitrile. Ethylene Propylene, Fluorocarbon, or Neoprene seals <br />are available upon request. See Fluid Compatibility Chart for <br />recommendations. <br />Body <br />Size <br />(in.) <br />Part No. <br />Brass <br />Wt. (LB.) <br />P/Piece <br />Part No. <br />Type 303 <br />Stainless <br />Wt. (LB.) <br />P/Piece <br />Thread <br />Size <br />NPTF <br />Overall <br />Length <br />Dimensions (in.) <br />Wrench <br />Flats <br />Largest <br />Diameter <br />A <br />B <br />C <br />1/8 <br />BST-1 <br />0.06 <br />SST-1 <br />0.05 <br />1/8-27 <br />1.06 <br />0.56 <br />0.69 <br />1/4 <br />BST-2 <br />0.17 <br />SST-2 <br />0.15 <br />1/4-18 <br />1.54 <br />0.81 <br />0.94 <br />3/8 <br />BST-3 <br />0.26 <br />SST-3 <br />0.24 <br />3/8-18 <br />1.59 <br />1.00 <br />1.16 <br />1/2 <br />BST-4 <br />0.59 <br />SST-4 <br />0.37 <br />1/2-14 <br />1.98 <br />1.13 <br />1.30 <br />3/4 <br />BST-6 <br />0.62 <br />SST-6 <br />0.57 <br />3/4-14 <br />2.15 <br />1.44 <br />1.66 <br />1 <br />BST-8 <br />0.99 <br />SST-8 <br />0.93 <br />1-111/2 <br />2.43 <br />1.75 <br />2.02 <br />1-1/4 <br />BST-10 <br />1.38 <br />- <br />- <br />1 1/4-11 1/2 <br />2.44 <br />2.00 <br />2.51 <br />1-1/2 <br />BST-12 <br />1.42 <br />- <br />- <br />1 1/2-11 1/2 <br />2.88 <br />2.50 <br />3.00 <br />Body <br />Size <br />(in.) <br />Part No. <br />Brass <br />Wt. (LB.) <br />P/Piece <br />Part No. <br />Type 303 <br />Stainless <br />Wt. (LB.) <br />P/Piece <br />Thread <br />Size <br />NPTF <br />Overall <br />Length <br />Dimensions (in.) <br />Wrench <br />Flats <br />Largest <br />Diameter <br />A <br />B <br />C <br />1/8 <br />BST- 1M <br />0.05 <br />SST-1M <br />0.05 <br />1/8-27 <br />1.06 <br />0.56 <br />0.69 <br />1/4 <br />BST-2M <br />0.16 <br />SST-2M <br />0.16 <br />1/4-18 <br />1.69 <br />0.81 <br />0.81 <br />3/8 <br />BST-3M <br />0.25 <br />SST-3M <br />0.21 <br />3/8-18 <br />1.75 <br />1.00 <br />1.16 <br />1/2 <br />BST-4M <br />0.34 <br />SST-4M <br />0.31 <br />1/2-14 <br />1.94 <br />1.13 <br />1.30 <br />3/4 <br />BST-6M <br />- <br />SST-6M <br />0.49 <br />3/4-14 <br />2.17 <br />1.44 <br />1.66 <br />1 <br />BST-8M <br />0.85 <br />SST-8M <br />0.08 <br />1-111/2 <br />2.53 <br />1.75 <br />2.02 <br />Quick Coupling Division <br />8145 Lewis Road • Minneapolis, MN 55427 <br />B-54 www.parker.com/quickcouplings <br />