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GUIDE SPECIFICATIONS – HOOK–UP COMPONENTS
UNIONS
Manufacturer
Macon Balancing
Models UR, URP, US, UB.
Design and Material
.50" – 2.0" Brass O-ring type Union. EPDM
O-ring. Fixed End available in FNPT or SWT.
Tailpiece available in MNPT, FNPT, SWT or
Press End. Size reductions available.
Ground joint type not acceptable.
Minimum Ratings
600 PSIG @ 250°F
MANUAL AIR VENTS
Manufacturer
Macon Balancing
Models MAV, PTV.
Design and Material
MAV Brass body. Knurled slotted handle.
Blowout-proof stem. Side vent. 1/4"
NPT. Standard and Extended length.
PTV Brass body, EPDM core and O-rings.
Knurled handle and cap. Blowout-proof stem.
Side vent with 1/8" hose barb. 1/4" and 1/2”
NPT. Standard and Extended length.
Minimum Ratings
MAV 400 PSIG @ 250°F
PTV 250 PSIG @ 250°F
AUTOMATIC AIR VENTS
Manufacturer
Macon Balancing
Model AAV
Design and Material
Forged brass body, manual shut-off cap.
Polypropylene float. Body designed to be
disassembled for cleaning. Vent capacity
1 SCFM @ 60 PSIG.
Minimum Ratings
150 PSIG @ 250°F
Y-STRAINERS
Manufacturer
Macon Balancing
Models SV, SVF.
Design and Material
.50" – 2.0" Forged or cast brass body.
EPDM O-ring. Plated steel handle with vinyl grip.
Blow out-proof stem. Chrome plated ball with
Teflon seats. 20 mesh stainless steel screen with
removable cap. Fixed End available in FNPT, SWT
or Press End. Tailpiece available in MNPT, FNPT,
SWT or Press End. Size reductions available.
Strainer shall be fitted with a hose end blow
down valve with cap and chain.
2.5" – 12.0" Cast iron body. Fiber gasket.
Stainless steel strainer screen. ANSI 125#
Flanged. Lug type ductile iron butterfly valve
mounted on the inlet.
Minimum Rating
.50" – 2.0" 600 PSIG @ 250°F
2.5" – 12.0" 175 PSIG @ 250°F.
HOOK–UP COMPONENTS continued –
Form # GS-C1-03.14
Tunstall Corporation
118 Exchange Street
Chicopee, MA 01013