Model BSL & BESL: Brass Silencer and Muffler

Brass Silencer/Muffler Dimensions (Units in mm)
Part No.	Part No.	Port (NPT)	A	B (hex)	C	D (hex)	E (closed)
BSL N1/8	BESL N1/8	1/8"	22.7	12	25	12	9.7
BSL N1/4	BESL N1/4	1/4"	28.5	15	25.3	14	11.7
BSL N3/8	BESL N3/8	3/8"	35.7	18	29.6	17	15.8
BSL N1/2	BESL N1/2	1/2"	39.3	21	35.8	21	21.1
Dimensions for Reference Use Only: Imperial fittings in mm, Metric fittings in mm, U.S.O.

Brass Fitting Operating Guide

• Installation of Pipe Fittings
  • Apply an appropriate sealant to the thread, tighten the fitting by hand, then turn it 2 to 3 turns with a wrench until it reaches the desired torque listed below.

    Recommendation of Torque for Tightening Fittings
    Fitting Thread Size	Torque, lb-ft	Torque, kgf/cm
    NPT 1/8, R1/8	5 - 6.5	70 - 90
    NPT 1/4, R1/4	8.5 - 10	120 - 140
    NPT 3/8, R3/8	16 - 17.5	220 - 240
    NPT 1/2, R1/2	20 - 21.5	280 - 300

• Installation of Tubing into Fitting:
  • Slowly push a clean and perpendicularly cut tube into the fitting until it comes to a dead stop.
  • Gently pull the tubing back until the Collet of the fitting grips onto the tubing and has a good seal.
  • Use Polyethylene, Polypropylene, Polyurethane, or Nylon tubing designed for instant fittings. Hard metal tubing, such as Stainless Steel tubing can be used if the tubing is grooved first.


• Removal of Tubing from Fitting:
  • Push in evenly on the two sides of the Release Button.
  • Pull out the tube while depressing the Release Button.
  • To reuse the tubing, cut off the lodged portion of the previously used tubing in an even and perpendicular fashion.


• Recommended Tubing Material, Size, and Hardness Requirements:

  Tubing Material	Specified Size	Tubing Size Tolerance
  Polyurethane	+/- 0.004" max.	+/-0.1 mm max.
  Polyethylene	+/- 0.006" max.	+/-0.15 mm max.
  Polypropylene	+/- 0.004" max.	+/-0.1 mm max.
  Nylon	+/- 0.004" max.	+/-0.1 mm max.
  Pre-grooved Metal Tubing	+/- 0.004" max.	+/-0.1 mm max.

• Storage:
  • Store fittings in a dry, cool place and away from sunlight.


• Specifications, Materials of Construction, and Schematic of Typical Construction:

  Specifications
  Operating Pressure Range	0 - 250 PSI (0 - 1650 kpa)
  Vacuum	0 - 29.5" Hg (750 mm Hg)
  Operating Temperature	5 - 230°F (-15 - 110°C)
  Recommended Tubing Material	Polyurethane, Nylon, Polyethylene, Polypropylene. Hard metal tubing can be used if tubing is grooved first.
  Materials of Construction
  Metal Body	Nickel-Plated Brass
  One piece combination Release Button & Collet	Nickel-Plated Brass
  O-Ring/Packing	NBR