SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
4. Blowdown Connection: Threaded.
5. Size: Match system flow capacity.
2.7 BUFFER TANK
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
1. Lochinvar Corporation.
2. Taco.
B. Tank: Welded steel; vertical construction; ASME constructed and labeled for 125-psig
minimum working pressure and 375 deg F maximum operating temperature. Tank shall be
constructed with a built in baffle to ensure adequate mixing of the fluids inside the tank. Tank
shall include anchor clips to attach tank to concrete pad.
C. Tank shall be furnished with two 2-1/2” flanged connections in the lower portion of the tank, a
¾” plugged air vent tapping, 1” relief valve tapping, and a 1” drain tapping.
D. Tank shall be factory equipped with a spray foam insulation with a minimum R-12 rating with a
UV resistant coating.
E. Tank sizes, configuration, and accessories shall be as Scheduled on Drawings.
2.8 CHEMICAL TREATMENT
A. Propylene Glycol: Industrial grade with corrosion inhibitors and environmental-stabilizer
additives for mixing with water in systems indicated to contain antifreeze or glycol solutions.
2.9 HYDRONIC PIPING SPECIALTIES
A. Y-Pattern Strainers:
1. Body: NPS 2 and smaller, ASTM B 584 or B 62 bronze with threaded cover and bottom
drain connection. NPS 2-1/2 and larger, ASTM A 126, Class B, cast iron with bolted
cover and bottom drain connection.
2. End Connections: Threaded ends for NPS 2 and smaller; flanged ends for NPS 2-1/2 and
larger.
3. Strainer Screen: 40-mesh startup strainer, and 20-mesh type 304 stainless steel screen.
4. CWP Rating: 125 psig.
B. Spherical, Rubber, Flexible Connectors:
1. Body: NPT 1-1/2” and smaller, single sphere, Kevlar –reinforced EPDM rubber body.
NPT 2” and larger Double sphere, kevlar-reinforced EPDM rubber body.
2. End Connections: Steel flanges drilled to align with Classes 150 and 300 steel flanges
for sizes 2” and larger, for sizes 1-1/2” and smaller, brass threaded union or flange
fittings, or sweat ends for copper tubing.
3. Performance: Capable of misalignment.
Contract 44577 KW Annex – Rev. E 44577-CSI-SPEC-001 232113 - 7