SECTION 15525

STEAM AND STEAM CONDENSATE SPECIALTIES

PART 1 GENERAL

WORK INCLUDED

Steam traps.

Steam air vents.

Flash tanks.

Blow down tanks.

Deaerators.

Boiler feed units.

Condensate return units.

Receivers.

Condensate pumps.

Vacuum pumping units.

Pressure reducing valves.

Steam safety valves.

Steam condensate meters.

RELATED WORK

Section 15121 - Expansion Compensation.

Section 15170 - Motors.

Section 15260 - Piping Insulation.

Section 15280 - Equipment Insulation.

Section 15520 - Steam and Steam Condensate Piping.

Section 15561 - Packaged Steel Fire Tube Boilers.

REFERENCES

ANSI/ASTM - Boilers and Pressure Vessels Code.

ASTM A105 - Forgings, Carbon Steel, for Piping Components.

ASTM A126 - Gray Iron Castings for Valves, Flanges, and Pipe Fittings.

ASTM A216 - Steel Casings, Carbon, Suitable for Fusion Welding, for High Temperature Service.

ASTM A395 - Ferric Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures.

ASME B31.9 - Building Services Piping.

REGULATORY REQUIREMENTS

Conform to ASME B31.9 - Building Services Piping.

QUALITY ASSURANCE

Manufacturer: For each product specified, provide components by same manufacturer throughout.

SUBMITTALS

Submit [shop drawings and] product data under provisions of Section [01300.] [01340.]

Submit [shop drawings and] product data for manufactured products and assemblies required for this project.

Include product description, model, dimensions, component sizes, rough-in requirements, service sizes, and finishes.

Submit schedule indicating manufacturer, model number, size, location, rated capacity, and features for each specialty.

Submit manufacturer's installation instructions under provisions of Section [01300.] [01340.]

OPERATION AND MAINTENANCE DATA

Submit operation and maintenance data under provisions of Section [01700.] [01730.]

EXTRA STOCK

Provide [two] [_____] service kits for each size and type of steam trap under provisions of Section [01700.] [01750.]

PART 2 PRODUCTS

ACCEPTABLE MANUFACTURERS - STEAM TRAPS

[______________________________________.]

[______________________________________.]

[______________________________________.]

Substitutions: Under provisions of Section [01600.] [01630.]

INVERTED BUCKET TRAPS

Cast iron [or semi-steel] body and bolted cover for 250 psig (1 720 kPa) WSP; provide access to internal parts without disturbing piping; with top test plug and bottom drain plugs, [brass] [or] [stainless steel] bucket, stainless steel seats and plungers, and stainless steel lever mechanism with knife edge operating surfaces, [integral inlet strainer of [brass,] [monel,] [stainless steel,]] [integral inlet check valve][;][.] [integral bi-metal air vent][;][.] [Model [__________] manufactured by [______________________________________________.]]

FLOAT AND THERMOSTATIC TRAPS

ASTM A126, cast iron [or semi-steel] body and bolted cover for [125 psig (860 kPa)] [250 psig (1 720 kPa)] WSP; provide access to internal parts without disturbing piping; with bottom drain plug, stainless steel or bronze bellows type air vent, stainless steel or copper float, stainless steel lever and valve assembly[,][;][.] [gage glass with shut-off cocks][;][.] [Model [__________] manufactured by [____________________________________.]]

THERMODYNAMIC TRAPS

Stainless steel body, disc, and cap, for [300 psig (2 070 kPa)] [600 psig (4 140 kPa)] WSP, [stainless steel insulating cap,] [1/4 inch (6 mm) steel blow down valve,] [integral strainer][;][.] [Model [__________] manufactured by [_________________________________.]]

THERMOSTATIC TRAPS

Pressure balanced type with [ASTM A395 cast iron] [brass] [ASTM A216 WCB cast steel] body and bolted or screwed cover[,] [and integral ball joint union,] for [125 psig (860 kPa)] [225 psig (1 550 kPa)] [300 psig (2 070 kPa)] [600 psig (4 140 kPa)] WSP; [phosphor bronze] [monel] [stainless steel] bellows, stainless steel valve and seat; [integral stainless steel strainer][;][.] [Model [__________] manufactured by [_________________________.]]

Freeze proof type with cast iron body for 300 psig (2 070 kPa) WSP, bronze bellows, stainless steel valve and seat, external adjustment[;][.] [Model [__________] manufactured by [______________________________________.]]

Bi-metallic type with ASTM A105 forged steel body and cover, for 300 psig (2 070 kPa) WSP, bi-metal element with stainless steel components, integral Type 304 stainless steel strainer screen, [1/4 inch (6 mm) blow down valve][;][.] [Model [__________] manufactured by

[________________________________________.]]

ACCEPTABLE MANUFACTURERS - STEAM AIR VENTS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

STEAM AIR VENTS

Balanced pressure type with [cast brass] [ASTM A126 cast iron] body and cover for [125 psig (860 kPa)] [225 psig (1 550 kPa)] WSP; provide access to internal parts without disturbing piping; [stainless steel] [phosphor bronze] bellows, stainless steel valve and seat.

ACCEPTABLE MANUFACTURERS - FLASH TANKS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

FLASH TANKS

Closed type, welded steel construction, tested and stamped in accordance with Section 8D of ANSI/ASME Boilers and Pressure Vessels Code for [100] [125] [_____] psig ([690] [860] [_____] kPa) working pressure; cleaned, prime coated, and supplied with steel support legs. Construct with nozzles and tappings for installation of accessories and piping connections.

ACCEPTABLE MANUFACTURERS - BLOW DOWN TANKS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

BLOW DOWN TANKS

Closed type, welded steel construction, tested and stamped in accordance with Section 8D of ANSI/ASME Boilers and Pressure Vessels Code for [100] [125] [_____] psig ([690] [860] [_____] kPa) working pressure; cleaned, prime coated, and supplied with steel support legs. Construct with nozzles and tappings for installation of accessories and piping connections.

ACCEPTABLE MANUFACTURERS - DEAERATORS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

DEAERATORS

Deaerator System: Consists of storage tank, surge tank, boiler feed pumps, transfer pumps, float switches, control panel and accessories.

Deaerator Storage Tank: Horizontal welded steel, ASME Code stamped construction for [50 psig (350 kPa)] [125 psig (860 kPa)] working pressure, with 11 x 15 inch (275 x 375 mm) manhole, and elevated, fabricated steel base.

Storage Tank Accessories: [_____] inch ([_____] mm) inlet water regulating valve with external float control assembly, steam pressure reducing valve, water level gage glass, manual and automatic vent valves, pressure relief valve, thermometer, pressure gage, adjustable inlet spray valve, overflow drain, manual drain valve, pressure gages on pump discharge, bronze isolation valves [and strainers] between boiler feed pumps and tanks, double pole high and low level alarm float switches.

Surge Tank: Horizontal welded steel, ASME Code stamped construction for [50 psig (350 kPa)] [125 psig (860 kPa)] working pressure, with 11 x 15 inch (275 x 375 mm) manhole, and elevated, fabricated steel base.

Surge Tank Accessories: [_____] inch ([_____] mm) float actuated inlet water regulating valve, water level gage glass, pressure relief valve, thermometer, pressure gage, inlet diffuser, overflow drain, manual drain valve, pressure gages on pump discharge, bronze isolation valves [and strainers] between transfer pumps and tank, double pole low level alarm float switch.

Boiler Feed Pumps: Two stage, vertical design, bronze fitted with stainless steel shaft, one enclosed and one axial flow bronze impeller, bronze straightening vanes, renewable bronze case ring, mechanical shaft seal, close coupled to 3500 rpm motor. Refer to Section 15170.

Transfer Pumps: Vertical design, bronze fitted with stainless steel shaft, enclosed bronze impeller, renewable bronze case ring, mechanical shaft seal, close coupled to motor. Refer to Section 15170.

Control Cabinet: NEMA II enclosure, UL listed, with piano hinged door, grounding lug, combination magnetic starters with overload relays, circuit breakers and cover interlock, [electric alternator, 'Auto-Off' switch,] [selector 'lead-off-lag' switches,] test buttons, terminal strip, alarm lights, acknowledge button, alarm horn, and fusible control circuit transformer.

Control Sequence: Operate transfer pumps on high level[,][;] [alternating after each cycle;] operate second transfer pump upon failure of first pump and alarm. Operate boiler feed pumps from boiler controls; refer to Section 15561.

Unit Capacity: Deaerator tank and surge tank capacities of [_____ - _____] gallons ([_____ - _____] L) to overflow; size [_____] inch ([_____] mm) diameter by [_____] inch ([_____] mm) long; [one] [two] [three] boiler feed pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor; [one] [two] [three] transfer pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor; make-up water supply pressure of [_____] psig ([_____] kPa).

ACCEPTABLE MANUFACTURERS - BOILER FEED UNITS

[______________________________________.]

[______________________________________.]

[______________________________________.]

Substitutions: Under provisions of Section [01600.] [01630.]

LOW PRESSURE BOILER FEED UNITS

Boiler Feed Units: Consist of receiver, inlet strainer, pumps, water make-up assembly, electric control components and accessories.

Condensate Receiver: Cast iron, equipped with water level gage, dial thermometer, pressure gages on pump discharge, bronze isolation valves [and strainer] between pumps and receiver, and lifting eye bolts.

Inlet Strainer: Cast iron, with vertical self-cleaning bronze screen and large dirt pocket, mounted on receiver. Screen shall be easily removable for cleaning.

Water Make-up Assembly: Consists of level control switch and solenoid valve of capacity equal to one boiler feed pump, mounted on receiver. Valve shall be packless, piston pilot operated type with cushioned closing and epoxy resin molded waterproof coil; with strainer, and manual bypass.

Pumps: Vertical design, bronze fitted with stainless steel shaft, enclosed bronze impeller, renewable bronze case ring, mechanical shaft seal, close coupled to motor.

Refer to Section 15170.

Unit Capacity: Receiver capacity of [_____] gallons ([_____] L); [one] [two] [three] boiler feed pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor.

[Model: [____________] manufactured by [_____________.]]

HIGH PRESSURE BOILER FEED UNITS

Boiler Feed Units: Consist of receiver, inlet strainer, pumps, water make-up assembly, electric controls and NEMA II control cabinet, and accessories.

Condensate Receiver: Horizontal welded steel construction with cradles, inlet cascade baffle and dished heads.

Inlet Strainer: With self-cleaning bronze screen and large dirt pocket on receiver. Screen shall be vertically removable for cleaning.

Water Make-up Assembly: Consists of level control switch and solenoid valve of capacity equal to one boiler feed pump; mounted on receiver. Valve shall be packless, piston pilot operated type with cushioned closing and epoxy resin molded waterproof coil; with strainer, and manual bypass.

Accessories: Water level gage, dial thermometer, companion flanges, low water cut-off switch, pressure gages on pump discharge, bronze isolation valves [and strainer] between pumps and receiver.

Pumps: Two stage, vertical design, bronze fitted with stainless steel shaft, one enclosed and one axial flow bronze impeller, bronze straightening vanes, renewable bronze case ring, mechanical shaft seal, close coupled to 3500 rpm motor. Refer to Section 15170.

Unit Capacity: Receiver capacity of [_____] gallons ([_____] L); size [_____] inch ([_____] mm) diameter by [_____] inch ([_____] mm) long; [one] [two] [three] boiler feed pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor; make-up water supply pressure of [_____] psig ([_____] kPa).

[Model: [___________] manufactured by [_______________.]]

ACCEPTABLE MANUFACTURERS - CONDENSATE RETURN UNITS

[______________________________________.]

[______________________________________.]

[______________________________________.]

Substitutions: Under provisions of Section [01600.] [01630.]

LOW PRESSURE CONDENSATE RETURN UNITS

Condensate Return Units: Consist of receiver, inlet strainer, pumps, float switches, control panel and accessories.

Condensate Receiver: Cast iron, equipped with externally adjustable float switches, water level gage, dial thermometer, pressure gages on pump discharge, bronze isolation valves [and strainer] between pumps and receiver, and lifting eye bolts.

Inlet Strainer: Cast iron with vertical self-cleaning bronze screen and large dirt pocket, mounted on receiver. Screen shall be easily removable for cleaning.

Pumps: [One] [Two] stage, vertical design, bronze fitted with stainless steel shaft, one enclosed [and one axial flow] bronze impeller, bronze straightening vanes, renewable bronze case ring, mechanical shaft seal, close coupled to 3500 rpm motor. Refer to Section 15170.

Control Cabinet: NEMA II enclosure, UL listed, with piano hinged door, grounding lug, combination magnetic starters with overload relays, circuit breakers and cover interlock, electric alternator, 'Auto-Off' switch, test button, terminal strip, high level alarm light, acknowledge button, alarm horn, and fusible control circuit transformer.

Control Sequence: Operate pumps on high level, alternating after each cycle; operate second pump upon failure of first pump and alarm.

Unit Capacity: Receiver capacity of [_____] gallons ([_____] L); [one] [two] boiler feed pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor.

[Model: [__________] manufactured by [_________________.]]

HIGH PRESSURE CONDENSATE RETURN UNITS

Condensate Return Units: Consist of receiver, pumps, float switches, control panel and accessories.

Condensate Receiver: Horizontal welded steel, ASME Code stamped construction for 125 psig (860 kPa) working pressure with elevated, fabricated steel base.

Accessories: Air vent valve, water level gage glass, pressure relief valve, dial thermometer, pressure gage, corrosion inhibitor anode, inlet baffle, drain valve, pressure gages on pump discharge, bronze isolation valves between pumps and receiver, double pole float switches.

Pumps: Two stage, vertical design, bronze fitted with stainless steel shaft, one enclosed and one axial flow bronze impeller, bronze straightening vanes, renewable bronze case ring, mechanical shaft seal, close coupled to 3500 rpm motor. Refer to Section 15170.

Control Cabinet: NEMA II enclosure, UL listed, with piano hinged door, grounding lug, combination magnetic starters with overload relays, circuit breakers and cover interlock, [electric alternator, 'Auto-Off' switch,] [selector 'lead-off-lag' switches,] test buttons, terminal strip, high level alarm light, acknowledge button, alarm horn, and fusible control circuit transformer.

Control Sequence: Operate pumps on high level[,][;] [alternating after each cycle;] operate second pump upon failure of first pump and alarm.

Unit Capacity: Receiver capacity of [_____] gallons ([_____] L); size [_____] inch ([_____] mm) diameter by [_____] inch ([_____] mm) long; [one] [two] [three] boiler feed pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor; make-up water supply pressure of [_____] psig ([_____] kPa).

[Model: [__________] manufactured by [_________________.]]

ACCEPTABLE MANUFACTURERS - RECEIVERS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

RECEIVERS

Condensate Receiver: Cast iron, equipped with tappings for mounting float switches, water level gage, thermometers, pump suction fittings, condensate inlet, and lifting eye bolts.

****** [OR] ******

Condensate Receiver: Horizontal welded steel, ASME Code stamped construction for 125 psig (860 kPa) working pressure with elevated, fabricated steel base and equipped with tappings for mounting float switches, water level gage, thermometers, pump suction fittings, condensate inlet, and lifting eye bolts.

ACCEPTABLE MANUFACTURERS - CONDENSATE PUMPS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

CONDENSATE PUMPS

Pumps: Vertical design, bronze fitted with stainless steel shaft, enclosed bronze impeller, renewable bronze case ring, mechanical shaft seal, close coupled to motor.

Refer to Section 15170.

****** [OR] ******

Pumps: Two stage, vertical design, bronze fitted with stainless steel shaft, one enclosed and one axial flow bronze impeller, bronze straightening vanes, renewable bronze case ring, mechanical shaft seal, close coupled to 3500 rpm motor. Refer to Section 15170.

Capacity: [One] [Two] [Three] pumps with capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor.

ACCEPTABLE MANUFACTURERS - VACUUM PUMPING UNITS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

VACUUM PUMPING UNITS

Vacuum Pumping Units: Consist of receiver on which are mounted inlet strainer, pumps, discharge valve assemblies, vacuum and float controls, electric controls and accessories.

Receiver: Two compartment cast iron with multi-jet vacuum producers, centerline of inlet no higher than eight inches (200 mm) from floor.

Accessories: Vacuum gage, thermometer, water level gage, lifting eye bolts, and vacuum breaker.

Inlet Strainer: Cast iron with vertical self-cleaning bronze screen and large dirt pocket, mounted on receiver. Screen shall be vertically removable for cleaning.

Condensate Discharge: Control with hydraulically operated positive acting discharge valves with bronze bellows and float operated pilot valves.

Pumps: Vertical design, flange mounted, bronze fitted with stainless steel shaft, enclosed bronze impeller, renewable bronze case ring, mechanical shaft seal, close coupled to motor. Refer to Section 15170.

Control Cabinet: NEMA II enclosure with piano hinged door, grounding lug, combination magnetic starters with overload relays, circuit breakers and cover interlock, selector switches "off", "float only", "float & vacuum", "continuous", electric alternator, test buttons, terminal strip, and fusible control circuit transformer.

Unit Capacity: Receiver capacity of [_____] gallons ([_____] L); [one] [two] vacuum pumps with air capacity of [_____] cfm ([_____] L/sec) with [_____] inches HG ([_____] kPa vacuum; water capacity of [_____] gal/min ([_____] L/sec) with [_____] psig ([_____] kPa) head, [_____] hp motor.

ACCEPTABLE MANUFACTURERS - PRESSURE REDUCING VALVES

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

PRESSURE REDUCING VALVES

Cast iron body, stainless steel valve spring, stem, and trim, phosphor bronze diaphragm, [direct acting,] [pilot operated,] threaded up to 2 inches (50 mm), flanged over 2 inches (50 mm).

ACCEPTABLE MANUFACTURERS - SAFETY RELIEF VALVES

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

SAFETY RELIEF VALVES

Bronze body, stainless steel valve spring, stem, and trim, direct pressure actuated, capacities ASME certified and labelled.

ACCEPTABLE MANUFACTURERS - STEAM AND STEAM CONDENSATE METERS

[___________________________________________.]

[___________________________________________.]

[___________________________________________.]

Substitutions: Under provisions of section [01600.] [01630.]

STEAM CONDENSATE METERS

Cast iron body, stainless steel rotor and gears, tungsten carbide bearings, bronze trim, vortex type meter with vaned rotor.

Standard meter registers in gallons (liters), calibrated for water at 200 degrees F (93 degrees C), with temperature correction chart, maximum totalization [1,000,000] [10,000,000] gallons ([4 546 000] [45 460 000] liters).

PART 3 EXECUTION

INSTALLATION AND APPLICATION

Install specialties in accordance with manufacturer's instructions.

Install thermostatic steam traps to drain condensate from steam radiation units, convectors, and other similar terminal heating units.

Install float and thermostatic traps to drain condensate from unit heaters, convertors, heating coils, steam separators, flash tanks, steam jacketed equipment, and direct steam injected equipment.

Install inverted bucket steam traps to drain condensate from steam main headers and branch lines.

Size steam traps to handle minimum of two times maximum condensate load of apparatus served.

Traps used on steam mains and branches shall be minimum 3/4 inch (20 mm) size.

Install steam traps with union or flanged connections at both ends.

Provide gate valve and strainer at inlet, and gate valve [and check valve] at discharge of steam traps.

Provide minimum 10 inch (250 mm) long dirt pocket of same pipe sizes as apparatus return connection between apparatus and steam trap.

Remove thermostatic elements from steam traps during temporary and trial usage, and until system has been operated and dirt pockets cleaned of sediment and scale.

Provide pressure reducing stations with pressure reducing valve, valved bypass, strainer and pressure gage on upstream side, relief valve and pressure gage on downstream side of pressure reducing valve.

Pressure reducing station shall be one or two stages as [required,] [indicated,] to produce flat reduced pressure curve over range of capacity.

Rate relief valves for pressure upstream of pressure reducing station, for full operating capacity. Set relief at maximum 20 percent above reduced pressure.

Terminate relief valves to outdoors.	Provide drip pan elbow with drain connection to nearest floor drain.

When several relief valve vents are connected to a common header, header cross section area shall equal sum of individual vent outlet areas.

STEAM TRAP SCHEDULE

Drawing_Code	T-1	T-2	T-3	T-4

Manufacturer

Model No.

Type

Capacity

BOILER FEED UNITS SCHEDULE

Drawing_Code	BF-1	BF-2	BF-3	BF-4

Manufacturer

Model No.

Location

Service

Receiver Capacity

Pump Capacity

Pump Head

Motor Size

CONDENSATE RETURN UNITS SCHEDULE

Drawing_Code	CR-1	CR-2	CR-3	CR-4

Manufacturer

Model No.

Location

Service

Receiver Capacity

Pump Capacity

Pump Head

Motor Size

RECEIVER SCHEDULE

Drawing_Code	P-1	P-2	P-3	P-4

Manufacturer

Model No.

Location

Service

Capacity

Diameter

Length

PUMP SCHEDULE

Drawing_Code	P-1	P-2	P-3	P-4

Manufacturer

Model No.

Location

Service

Capacity

Head

Minimum Efficiency

Motor Size

VACUUM PUMPING UNITS SCHEDULE

Drawing_Code	VP-1	VP-2	VP-3	VP-4

Manufacturer

Model No.

Location

Service

Receiver Capacity

Pump Air Capacity

Pump Vacuum

Pump Water Capacity

Pump Head

Motor Size

END OF SECTION