Home » Walther Couplings » Manual Couplings: Clean Break » BF Series Couplings - Ball Face Couplings

BF Series (Ball Face) Couplings

Low pressure, clean break coupling

Link to .pdf brochure for BF-005, BF-009, BF-012

Link to .pdf brochure for BF-025 & BF-050

The BF Series (ball face) couplings were developed primarily for chemical industry applications. They are a high clean break coupling which can be used for both non-lubricating media, such as demineralized water, process liquids, "dry" gases and solvents or lubricating media, such as oils or soap solutions. Design features provide for easily cleanable surfaces.

The BF Series couplings are available in small bore sizes (above left) of 5mm, 9mm and 12mm and larger bore sizes (above right) of 25mm and 50mm. Made of stainless steel (other materials available), the BF Series connect/disconnect process is totally squirt-free, allowing minimal spillage or air inclusion.

Technical data:

Type (click for complete part numbers)	BF-005	BF-009	BF-012	BF-025	BF-050
Nominal bore size: (mm)	5	9	12	25	50
Working pressure: (psi) Connected and disconnected static at 68°F	930	930	930	580	232
Working temperature:	14°F - 392°F	14°F - 392°F	14°F - 392°F	14°F - 392°F	14°F - 392°F
Cv value:Coupling to AdapterAdapter to Coupling	0.72...0.810.70...0.84	3.37...5.043.24...5.11	5.36...8.225.65...9.30	17	60
Coupling forces: (lbs) without pressure	approx 15.4	approx 24.2	approx 35.2	minimal	minimal
Displaced volume: until start of flowAdapter:Coupling:	0.001 cu.in0.008 cu.in	0.007 cu.in0.012 cu.in	0.098 cu.in0.110 cu.in	--	--
Displaced volume: at full couple stroke	0.046 cu.in	0.378 cu.in	0.964 cu.in	--	--
Connectable up to increases in pressure: (psi) of the Adapter side to: of the Coupling side to: Coupling counterpart w/o pressure and based on 300N coupling force	930360	17590	10044	580580	232232
Inclusion volume during connection:	0.001 cu.in	0.005 cu.in	0.008 cu.in	--	--
Theoretical spillage volume during disconnection: for incompressible liquids	0.001 cu.in	0.006 cu.in	0.009 cu.in	0.061 cu.in	0.153 cu.in

Seals:: PTFE used in combination with Viton (FPM), EPDM or Perfluorine Elastomers (FFPM).
Material:: Stainless steel 1.4404 and/or 1.4571 (AISI 316I or 316ti); (other materials available, e.g Hastelloy, titanium)
End Fitting:: BSPP standard. (BSPP to NPT adaptors available)

Features:

clean break/squirt free during connection/disconnection with minimal spillage and air inclusion
automatic locking with simple "push to connect" operation
compatible with both non-lubricating and lubricating media
easy cleanable surfaces
BF-025/BF-050 only- lever controlled valve operation
BF-025/BF-050 only- mechanical locking is possible with closed valves only