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home » snouts 101 » specifications & design guide

Specifications & Design Guide

1. PRODUCT NAME

The Snout® Oil & Debris Stop

U.S. Patent # 6126817. Foreign patents pending.

2. MANUFACTURER

Best Management Products, Inc.
53 Mt. Archer Rd.
Lyme CT 06371
Phone: (800) 504-8008 or (860) 434-0277
Fax: (410) 687-6757
E-mail: tjm@bmpinc.com
Web site: www.bmpinc.com

3. PRODUCT DESCRIPTION

Basic Application: The Snout Oil & Debris Stop is a plastic composite hooded outlet cover that attaches to the wall of a storm water catch basin over the outlet pipe in such a manner as to prevent the exit of floating debris and oil.

Advantages of the Snout Oil & Debris Stop:
  • Easy to install
  • Easy to clean
  • Very low head loss
  • Reduces pipe cleaning maintenance
  • Highly corrosion resistant
  • Lightweight
  • Converts existing structures into oil and debris trap
  • Prevents siphoning of trapped contaminants
  • Composition and Materials: The Snout is hand fabricated from marine grade fiberglass. The attachment hardware is 18-8 stainless steel, the anti-siphon device is schedule 40 PVC and the access hatch is ABS plastic.
  • These materials have proven to be extremely durable and maintenance free.
  • The Snout is adaptable to any type catch basin construction and is available in flat or curved back styles.

Sizes:
  • 12F and 12R for up to 11.9” pipe O.D. (R for 36”-48” I.D. manholes)
  • 18F and 18R for up to 17.9” pipe O.D. (R for 48”-60” I.D. manholes)
  • 24F and 24R for up to 23.9” pipe O.D. (R for 48”-60” I.D. manholes)
  • 30F and 30R for up to 29.9” pipe O.D. (R for 60”-72” I.D. manholes)
  • 36F for up to 35.9” pipe O.D.
  • 48F for up to 47.9” pipe O.D.
  • 54R/72 for up to 53.9” pipe O.D. (for a 72” I.D. structure only
  • 72F for up to 71.9” pipe O.D.
  • 96F for up to 95.9” pipe O.D.

Composition and Materials: The "Snout" is hand fabricated from marine grade fiberglass. The attachment hardware is 18-8 stainless steel, the anti-siphon device is schedule 40 PVC and the access hatch is ABS plastic. These materials have proven to be extremely durable and maintenance free. The "Snout" is adaptable to any type catch basin construction and is available in flat or curved back styles. F=(flat back, for square structures) and R= (round structures)

4. TECHNICAL DATA

The Snout Oil & Debris Stop components consist of:
  • Standard size composite hoods
  • Gasketed, screw down, water tight ,clean-out access port
  • Stainless steel mounting hardware
  • PVC SCH40 fittings and pipe for anti-siphon device
  • Pressure sensitive oil resistant foam rubber gasket
  • "Snout" composite components are hand and chopper gun laminations of these properties:

Physical Properties of Unsaturated Polyester Resin Reinforced Laminates
  • (33/66 Glass/Resin 1.5 oz mat Laminates .125in) Flexural Strength (psi) ASTM D-790 27,500
  • Flexural Modulus (psi) ASTM D-790 1,157,000
  • Tensile Strength (psi) ASTM D-638 16,700
  • Tensile Modulus (psi) ASTM D-638 1,457,000
  • Tensile Elongation (%) ASTM D-638 1.54
  • Hardness, Barcol 934.1 ASTM D-2583 55-60

Physical Properties of ISO Gel Coat
  • Room Temperature Cured for 45 hours
  • Post Cured at 50 degrees for 24 hours
  • Tensile Strength 6,218 6,581
  • Elongation, % 2.70 1.90
  • Flexural Strength, psi 11,363 11,329
  • Heat Distortion, °F 0.544 x 106 0.713 x 106
  • Mandrel Flex, Mandrel diameter in inches—1.0

Sample Specification for Snout Oil & Debris Stop
All new and / or existing catch basins or water quality structures shall be outfitted with the BMP, Inc. "Snout" Oil-Water-Debris Separator covering the exit pipe. The size and position of the Snout shall be determined by pipe style and sump depth per manufacturer's recommendations. The anti-siphon device shall extend above the flood level of the structure where practical (a 12” length of vent pipe is included in the installation kit.) The hood shall be securely attached to the catch basin wall with 3/8” stainless steel bolts and sealed to the structure with marine silicone adhesive or gasket material supplied in optional installation kit. The "Snout" Oil & Debris Separator is manufactured by Best Management Products, Inc. (800-504-8008, www.bmpinc.com)

5. INSTALLATION
  • Select the "Snout" Oil & Debris Separator of size and configuration to fit application.
  • Center the "Snout" directly over the exit pipe so that the entire pipe is covered.
  • Position the "Snout" so that the lower edge of the hood is at least 1/2 the pipe diameter below the lowest inside point of the pipe (minimum of 6” below invert).
  • Drill equally spaced 7/16" holes through the Snout flange. (Number of holes vary with size of Snout.)
  • Mark and drill catch basin and install the tamp-in lead anchors
  • Drill equally spaced 7/16" holes through the "Snout" flange.
  • Blow the hole clean of dust and other material.
  • Insert the anchor into the hole (Lead shield out).
  • Position the setting tool in the anchor. (The outer rim of the tool should seat onto the lead shield rim.)
  • Using the tool, set the anchor by driving the lead sleeve over the cone using several sharp hammer blows. (Be sure the anchor is at the required embedment depth.)
  • Position the fixture, insert screw or bolt and tighten.
  • Remove PSA backing and with firm pressure, attach gasket strip to back of flange and trim excess.
  • Remove backing and apply the supplied PSA gasket from kit to flange around back of "Snout".
  • Attach the "Snout" to the catch basin wall with 3/8" diameter stainless steel bolts in lead expansion anchors. Do not over tighten, 10-15 foot pounds should be sufficient.
  • Cut the anti-siphon vent stack to length and attach to hood with PVC cement.
  • Attach 90 degree fitting to vent stack with PVC cement. Ensure that fitting opening is accessible for maintenance and inspection.

Snout Installation Kit Items
  • (4-16) expansion anchors
  • (4-16) 3/8 x 1" stainless steel bolts
  • (4-16) stainless steel washers
  • (1) PSA backed gasket strip sized to unit
  • (1) 1" diameter 24 " length PVC pipe
  • (1) 90 degree elbow

6. AVAILABILITY AND COST

The "Snout" is manufactured by Best Management Products, Inc. and is available through them at:

Best Management Products, Inc.
53 Mt. Archer Rd.
Lyme CT 06371
800-504-8008
860-434-0277
860-434-3195fax
Email: tjm@bmpinc.com

Or from authorized distributors of quality wastewater products nationally and in Canada. For a list of some of our distributors, go to BMP Distributor Locator.

7. WARRANTY

Best Management Products, Inc. warrants for a period of one year from date of delivery to the original purchaser that the product is free from defects in material and workmanship. BMP, Inc. makes no other warrant of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose other than the warranty set forth above. Failure to follow the instructions for installation provided by BMP, Inc. will void this warranty.

8. MAINTENANCE

Normal maintenance consists of routine inspection and rinsing with a hose or pressure washer during the cleaning sequence of the catch basin and flushing the anti-siphon vent with water or air to verify that it is clear.

9. TECHNICAL SUPPORT

For technical consultation or additional information, and for custom design and fabrication services, please contact T. J. Mullen at (800) 504-8008 (tjm@bmpinc.com) or Lee Duran (888) 4340277 (duran@bmpinc.com)

Downloads
Snout Spec (dwg version)
Snout Spec (pdf)
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Bio-Skirt® Spec (pdf)
TrashScreenTM Spec (dwg version)
TrashScreenTM Spec (pdf)