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  Our Catalog   Hydraulics, Pneumatics & Plumbing   Valves   Diaphragm Valves

Diaphragm Valves - 510 - On Sale Now! Save up to 10%


On Sale! Up to 10% off on Diaphragm Valves at In The National Interest. Top brands include Hayward Flow Control, Asco, Rain Bird, Dexter, PondMaster, Richdel Irritrol, Zurn, & Studor. Hurry! Limited time offers. Offers valid only while supplies last.



Hayward DAB1005UFF Series DAB True Union PVC with FPM Diaphragm Valve, Socket/Threaded End, FPM Seals, 1/2'' Size
Hayward DAB1005UFF Series DAB True Union PVC with FPM Diaphragm Valve, Socket/Threaded End, FPM Seals, 1/2" Size
In Stock
$146.95

mpn: DAB1005UFF,

Diaphragm Valves-DAB Series • Max. pressure: 150 psi Temp. range: 40° to 140°F Handle corrosive slurries and abrasives in high-purity/sanitary applications. Stroke adjustment allows precise flow control. Clear beacon-type position indicator. Use ...


ASCO 8222G094 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 1/2'' Pipe Size, 2-Way Normally Closed, PTFE Sealing, 5/8'' Orifice, 4 Cv Flow, 120V/60 Hz, 110V/50
ASCO 8222G094 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 1/2" Pipe Size, 2-Way Normally Closed, PTFE Sealing, 5/8" Orifice, 4 Cv Flow, 120V/60 Hz, 110V/50
By Asco
In Stock
$284.00

mpn: 8222G094 -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 1/2" Pipe Size. Brass body materia...


Rain Bird 208143 100-PEB 1'' Irrigation Valve Diaphragm Assembly
Rain Bird 208143 100-PEB 1" Irrigation Valve Diaphragm Assembly
In Stock
$58.78

mpn: 208143,

This is the diaphragm assembly used on the 100 PEB Series Valve.Rain Bird 208143 100-PEB 1" Irrigation Valve Diaphragm Assembly. ...


10 Pcs Dexter Diaphragm 9118-049-001 (W7438)
10 Pcs Dexter Diaphragm 9118-049-001 (W7438)
In Stock
$29.99

mpn: 9118-049-001, ean: 0317991180490,

Diaphragm for Dexter 9118-049-001...


ASCO 8210G009HW -120/60,110/50 Brass Body Hot Water Pilot Operated Diaphragm Valve, 125 psi Maximum Hot Water Operating Pressure, 3/4'' Pipe Size, 2-Way Normally Closed, EPDM Sealing, 3/4'' Orifice, 5 C
ASCO 8210G009HW -120/60,110/50 Brass Body Hot Water Pilot Operated Diaphragm Valve, 125 psi Maximum Hot Water Operating Pressure, 3/4" Pipe Size, 2-Way Normally Closed, EPDM Sealing, 3/4" Orifice, 5 C
By Asco
In Stock
$197.30

mpn: 8210G009HW -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 3/4" Pipe Size. Brass body materia...


Pondmaster Replacement Diaphragm Kit for AP-100
Pondmaster Replacement Diaphragm Kit for AP-100
In Stock
$12.93
$11.94
You Save: 8%
The Pondmaster Replacement Diaphragm Kit for the AP-100 Air Pump includes (2) diaghragms and (2) flapper valves...


Replacement Diaphragm for ALL Irritrol/Richdel 2400 & 2600 Valves
Replacement Diaphragm for ALL Irritrol/Richdel 2400 & 2600 Valves
In Stock
$14.99
$13.95
You Save: 7%

mpn: Irritrol richdel hardie, ean: 0612052039169,



ASCO 8220G409-120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 3/4'' Pipe Size, 2-Way Normally Closed, EPDM/PTFE Sealin
ASCO 8220G409-120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 3/4" Pipe Size, 2-Way Normally Closed, EPDM/PTFE Sealin
By Asco
In Stock
$332.79
$301.00
You Save: 10%

mpn: 8220G409 -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 3/4" Pipe Size. Brass body materia...


Zurn P6000-LL-CP Outside Brass Cover for Aquavantage and Aquaflush Exposed Flush Valves, Chrome-Plated
Zurn P6000-LL-CP Outside Brass Cover for Aquavantage and Aquaflush Exposed Flush Valves, Chrome-Plated
By Zurn
In Stock
$21.94

mpn: P6000-LL-CP, ean: 0670240413375,

Zurn aquavantage flush valves feature a chemical and clog-resistant triple filter diaphragm, ensuring that the contaminants in your water won't clog the diaphragm over time. Like all Zurn diaphragms, these are made from Zurn go Blue! thermoplastic el...


Studor 20396 Trap-Vent, Integrated Trap and Air Admittance Valve, 1-1/2'' Outlet, White
Studor 20396 Trap-Vent, Integrated Trap and Air Admittance Valve, 1-1/2" Outlet, White
In Stock
$39.99
$39.16
You Save: 2%

mpn: 20396, ean: 0764651203967,

1-1/2" Trap-Vent Assembly (Integrated Trap & Air Admittance Valve).Easy installation in minutes and Replaces conventional lavatory P-trap. Trap-Vent is for use in a bathroom lavatory installation venting up to 6 DFU. Maintains required 2" trap seal w...


ASCO 8220G411 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 1'' Pipe Size, 2-Way Normally Closed, EPDM/PTFE Sealing,
ASCO 8220G411 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 1" Pipe Size, 2-Way Normally Closed, EPDM/PTFE Sealing,
By Asco
In Stock
$572.28
$563.43
You Save: 2%

mpn: 8220G411 -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 1" Pipe Size. Brass body material....


ASCO 8220G027 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 1-1/4'' Pipe Size, 2-Way Normally Closed, EPDM Sealing,
ASCO 8220G027 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 1-1/4" Pipe Size, 2-Way Normally Closed, EPDM Sealing,
By Asco
In Stock
$703.71
$637.20
You Save: 9%

mpn: 8220G027 -120/60,110/50,

4.7 out of 5 stars with 60 reviews
Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 1-1/4" Pipe Size. Brass body mater...


ASCO 8220G009 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 50 psi Maximum Steam Operating Pressure, 1-1/4'' Pipe Size, 2-Way Normally Closed, EPDM Sealing, 1
ASCO 8220G009 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 50 psi Maximum Steam Operating Pressure, 1-1/4" Pipe Size, 2-Way Normally Closed, EPDM Sealing, 1
By Asco
In Stock
$506.88

mpn: 8220G009 -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 1-1/4" Pipe Size. Brass body mater...


ASCO 8220G011 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 50 psi Maximum Steam Operating Pressure, 1-1/2'' Pipe Size, 2-Way Normally Closed, EPDM Sealing, 1
ASCO 8220G011 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 50 psi Maximum Steam Operating Pressure, 1-1/2" Pipe Size, 2-Way Normally Closed, EPDM Sealing, 1
By Asco
In Stock
$625.44

mpn: 8220G011 -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 1-1/2" Pipe Size. Brass body mater...


ASCO 8220G029 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 1-1/2'' Pipe Size, 2-Way Normally Closed, EPDM Sealing,
ASCO 8220G029 -120/60,110/50 Brass Body Hot Water and Steam Pilot Operated Diaphragm and Piston Valve, 125 psi Maximum Steam Operating Pressure, 1-1/2" Pipe Size, 2-Way Normally Closed, EPDM Sealing,
By Asco
In Stock
$799.90

mpn: 8220G029 -120/60,110/50,

Hot Water and Steam valves are built with rugged materials to stand up to the harsh media and the environmental conditions of water/steam applications.Two-way (2/2) normally closed (opens when energized) operations. 1-1/2" Pipe Size. Brass body mater...



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