Skip to content

Newest Products

  • John Guest PI250808S Stem Barb Connector - 1/4" OD Stem x 1/4" ID Barb STEM TO HOUSE BARB Grey Acetal JOHN GUEST 10 Pack
    John Guest PI250808S Stem Barb Connector - 1/4" OD Stem x 1/4" ID Barb STEM TO HOUSE BARB Grey Acetal JOHN GUEST 1 Pack
    Save up to 18% % Off
    $1.69 - $13.89
    ($1.69 each)
    $1.98 - $16.99
    $1.98 - $16.99
    $1.98
    $1.69 - $13.89
    $1.69

    John Guest PI250808S Stem Barb Connector - 1/4" OD Stem x 1/4" ID Barb

    JOHN GUEST
    PI250808S

    John Guest PI250808S TUBE TO HOSE STEM 1/4" STEM OD 1/4" HOSE ID Features: Push-fit technology ensures reliable, leak-free connections Stem des...

    View full details
    $1.69 - $13.89
    ($1.69 each)
    $1.98 - $16.99
    $1.98 - $16.99
    $1.98
    $1.69 - $13.89
    $1.69
    Save up to 18% % Off
  • John Guest PI4512F6S Gray Acetal Flare Female Connector 3/8 x 3/8 FFL faucet connector JOHN GUEST
    Save up to 31% % Off
    $3.38 - $31.79
    ($3.38 each)
    $4.89 - $31.79
    $4.89 - $31.79
    $4.89
    $3.38 - $31.79
    $3.38

    John Guest PI4512F6S Female Adapter Flare - 3/8" x 3/8" Flare

    JOHN GUEST
    PI4512F6S

    John Guest PI4512F6S Female Adapter Flare - 3/8 x 3/8 Flare Features: Push-fit technology ensures secure, reliable, and leak-free connections C...

    View full details
    $3.38 - $31.79
    ($3.38 each)
    $4.89 - $31.79
    $4.89 - $31.79
    $4.89
    $3.38 - $31.79
    $3.38
    Save up to 31% % Off
  • John Guest FemalePI4512F4S Adapter Flare - 3/8 x 1/4 Flare faucet connector JOHN GUEST
    Save up to 15% % Off
    $3.25 - $39.00
    ($3.90 each)
    $5.99 - $45.99
    $5.99 - $45.99
    $5.99
    $3.25 - $39.00
    $3.25

    John Guest PI4512F4S Female Adapter Flare - 3/8" x 1/4" Flare

    JOHN GUEST
    PI4512F4S

    John Guest PI4512F4S Female Adapter Flare - 3/8 x 1/4 Flare Features: Push-fit technology provides secure, reliable, and leak-free connections ...

    View full details
    $3.25 - $39.00
    ($3.90 each)
    $5.99 - $45.99
    $5.99 - $45.99
    $5.99
    $3.25 - $39.00
    $3.25
    Save up to 15% % Off
  • John Guest PI451222S Female Adapter NPTF - 3/8 x 1/4 NPTF faucet connector JOHN GUEST
    Save up to 12% % Off
    $4.00 - $38.00
    ($4.00 each)
    $6.99 - $42.99
    $6.99 - $42.99
    $6.99
    $4.00 - $38.00
    $4.00

    John Guest PI451222S Female Adapter NPTF - 3/8 x 1/4 NPTF

    JOHN GUEST
    PI451222S

    John Guest PI451222S Female Adapter NPTF - 3/8 x 1/4 NPTF Features: Push-fit technology provides secure, reliable, and leak-free connections De...

    View full details
    $4.00 - $38.00
    ($4.00 each)
    $6.99 - $42.99
    $6.99 - $42.99
    $6.99
    $4.00 - $38.00
    $4.00
    Save up to 12% % Off
  • John Guest PI450822S Female Adapter NPTF - 1/-4 x 1/4 NPTF faucet connector JOHN GUEST
    Save up to 39% % Off
    $4.25 - $37.50
    ($4.25 each)
    $6.99 - $39.99
    $6.99 - $39.99
    $6.99
    $4.25 - $37.50
    $4.25

    John Guest PI450822S Female Adapter NPTF - 1/-4 x 1/4 NPTF

    JOHN GUEST
    PI450822S

    John Guest PI450822S Female Adapter NPTF - 1/-4 x 1/4 NPTF Features: Push-fit technology ensures secure, reliable, and leak-free connections De...

    View full details
    $4.25 - $37.50
    ($4.25 each)
    $6.99 - $39.99
    $6.99 - $39.99
    $6.99
    $4.25 - $37.50
    $4.25
    Save up to 39% % Off
  • John Guest CI3212U7S Faucet Connector UNS - 3/8" x 7/16" UNS FAUCET CONNECTOR UNS Grey Acetal JOHN GUEST 10-Pack
    John Guest CI3212U7S Faucet Connector UNS - 3/8" x 7/16" UNS FAUCET CONNECTOR UNS Grey Acetal JOHN GUEST 1-PC
    Save up to 22% % Off
    $4.25 - $38.99
    ($4.25 each)
    $5.99 - $49.99
    $5.99 - $49.99
    $5.99
    $4.25 - $38.99
    $4.25

    John Guest CI3212U7S Faucet Connector UNS - 3/8" x 7/16" UNS

    JOHN GUEST
    CI3212U7S

    John Guest CI3212U7S Faucet Connector UNS - 3/8" x 7/16" UNS Features: Push-fit technology ensures quick, reliable, and leak-free connections D...

    View full details
    $4.25 - $38.99
    ($4.25 each)
    $5.99 - $49.99
    $5.99 - $49.99
    $5.99
    $4.25 - $38.99
    $4.25
    Save up to 22% % Off
  • John Guest CI3208U7S Faucet Connector UNS - 1/4" x 7/16" UNS FAUCET CONNECTOR UNS Grey Acetal JOHN GUEST 10-Pack
    John Guest CI3208U7S Faucet Connector UNS - 1/4" x 7/16" UNS FAUCET CONNECTOR UNS Grey Acetal JOHN GUEST 1-PC
    Save up to 24% % Off
    $3.98 - $34.99
    ($3.98 each)
    $5.99 - $45.99
    $5.99 - $45.99
    $5.99
    $3.98 - $34.99
    $3.98

    John Guest CI3208U7S Faucet Connector UNS - 1/4" x 7/16" UNS

    JOHN GUEST
    CI3208U7S

    John Guest CI3208U7S Faucet Connector UNS - 1/4 x 7/16 UNS Features: Push-fit technology ensures quick, reliable, and leak-free connections Des...

    View full details
    $3.98 - $34.99
    ($3.98 each)
    $5.99 - $45.99
    $5.99 - $45.99
    $5.99
    $3.98 - $34.99
    $3.98
    Save up to 24% % Off
  • John Guest PI121208S Bulkhead Union - 3/8 x 1/4 REDUCING BULKHEAD UNION Grey Acetal JOHN GUEST 10-Pack
    John Guest PI121208S Bulkhead Union - 3/8 x 1/4 REDUCING BULKHEAD UNION Grey Acetal JOHN GUEST 1-PC
    Save up to 29% % Off
    $6.40 - $57.75
    ($6.40 each)
    $8.99 - $57.75
    $8.99 - $57.75
    $8.99
    $6.40 - $57.75
    $6.40

    John Guest PI121208S Bulkhead Union - 3/8 x 1/4

    JOHN GUEST
    PI121208S

    John Guest PI121208S Bulkhead Union - 3/8 x 1/4 Features: Push-fit technology provides quick, reliable, and leak-free connections Designed to c...

    View full details
    $6.40 - $57.75
    ($6.40 each)
    $8.99 - $57.75
    $8.99 - $57.75
    $8.99
    $6.40 - $57.75
    $6.40
    Save up to 29% % Off
  • John Guest PI1216S Bulkhead Union - 1/2 x 1/2 BULKHEAD UNION Grey Acetal JOHN GUEST 10-Pack
    John Guest PI1216S Bulkhead Union - 1/2 x 1/2 BULKHEAD UNION Grey Acetal JOHN GUEST 1-PC
    Save up to 48% % Off
    $8.99 - $40.99
    ($8.99 each)
    $11.98 - $78.99
    $11.98 - $78.99
    $11.98
    $8.99 - $40.99
    $8.99

    John Guest PI1216S Bulkhead Union - 1/2 x 1/2

    JOHN GUEST
    PI1216S

    John Guest PI1216S Bulkhead Union - 1/2 x 1/2 Features: Push-fit technology ensures quick, reliable, and leak-free connections Designed to conn...

    View full details
    $8.99 - $40.99
    ($8.99 each)
    $11.98 - $78.99
    $11.98 - $78.99
    $11.98
    $8.99 - $40.99
    $8.99
    Save up to 48% % Off
  • John Guest PI1212S Bulkhead Union - 3/8 x 3/8 BULKHEAD UNION Grey Acetal JOHN GUEST 10-Pack
    John Guest PI1212S Bulkhead Union - 3/8 x 3/8 BULKHEAD UNION Grey Acetal JOHN GUEST 1-PC
    Save up to 18% % Off
    $6.30 - $49.30
    ($6.30 each)
    $8.99 - $59.99
    $8.99 - $59.99
    $8.99
    $6.30 - $49.30
    $6.30

    John Guest PI1212S Bulkhead Union - 3/8 x 3/8

    JOHN GUEST
    PI1212S

    John Guest PI1212S Bulkhead Union - 3/8 x 3/8 Features: Constructed from gray acetal copolymer for strength and durability Equipped with Nitril...

    View full details
    $6.30 - $49.30
    ($6.30 each)
    $8.99 - $59.99
    $8.99 - $59.99
    $8.99
    $6.30 - $49.30
    $6.30
    Save up to 18% % Off
  • John Guest PI1208S Bulkhead Union - 1/4 x 1/4 BULKHEAD UNION Grey Acetal JOHN GUEST 10-Pack
    John Guest PI1208S Bulkhead Union - 1/4 x 1/4 BULKHEAD UNION Grey Acetal JOHN GUEST 1-PC
    Save up to 23% % Off
    $4.85 - $38.50
    ($4.85 each)
    $7.99 - $49.99
    $7.99 - $49.99
    $7.99
    $4.85 - $38.50
    $4.85

    John Guest PI1208S Bulkhead Union - 1/4 x 1/4

    JOHN GUEST
    PI1208S

    John Guest PI1208S Bulkhead Union - 1/4 x 1/4 Features: Push-fit technology ensures quick, reliable, and leak-free connections Designed to conn...

    View full details
    $4.85 - $38.50
    ($4.85 each)
    $7.99 - $49.99
    $7.99 - $49.99
    $7.99
    $4.85 - $38.50
    $4.85
    Save up to 23% % Off
  • John Guest PI061612S Reducer Stem - 3/8 x 1/2 Stem STEM REDUCER Grey Acetal JOHN GUEST 10-Pack
    John Guest PI061612S Reducer Stem - 3/8 x 1/2 Stem stem reducer JOHN GUEST
    Save up to 16% % Off
    $4.09 - $38.49
    ($4.09 each)
    $5.98 - $45.99
    $5.98 - $45.99
    $5.98
    $4.09 - $38.49
    $4.09

    John Guest PI061612S Reducer Stem - 3/8 x 1/2 Stem

    JOHN GUEST
    PI061612S

    John Guest PI061612S Reducer Stem - 3/8 x 1/2 Stem Features: Push-fit technology ensures reliable, leak-free connections Stem design allows eas...

    View full details
    $4.09 - $38.49
    ($4.09 each)
    $5.98 - $45.99
    $5.98 - $45.99
    $5.98
    $4.09 - $38.49
    $4.09
    Save up to 16% % Off
  • John Guest PI061208S Reducer Stem - 1/4 x 3/8 Stem STEM REDUCER Grey Acetal JOHN GUEST 10-Pack
    John Guest PI061208S Reducer Stem - 1/4 x 3/8 Stem stem reducer JOHN GUEST
    Save up to 7% % Off
    $2.98 - $28.75
    ($2.98 each)
    $3.19 - $25.99
    $3.19 - $25.99
    $3.19
    $2.98 - $28.75
    $2.98

    John Guest PI061208S Reducer Stem - 1/4 x 3/8 Stem

    JOHN GUEST
    PI061208S

    John Guest PI061208S Reducer Stem - 1/4 x 3/8 Stem Features: Push-fit technology provides secure, reliable, leak-free connections Stem inserts easi...

    View full details
    $2.98 - $28.75
    ($2.98 each)
    $3.19 - $25.99
    $3.19 - $25.99
    $3.19
    $2.98 - $28.75
    $2.98
    Save up to 7% % Off
  • John Guest PI051624S Stem Adapter NPTF - 1/2 x 1/2 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 10-Pack
    John Guest PI051624S Stem Adapter NPTF - 1/2 x 1/2 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 1-PC
    Save up to 14% % Off
    $2.00 - $18.00
    ($2.00 each)
    $3.99 - $20.99
    $3.99 - $20.99
    $3.99
    $2.00 - $18.00
    $2.00

    John Guest PI051624S Stem Adapter NPTF - 1/2 x 1/2 NPTF

    JOHN GUEST
    PI051624S

    John Guest PI051624S Stem Adapter NPTF - 1/2 x 1/2 NPTF Features: Push-fit technology ensures secure, reliable, and leak-free connections Easy ...

    View full details
    $2.00 - $18.00
    ($2.00 each)
    $3.99 - $20.99
    $3.99 - $20.99
    $3.99
    $2.00 - $18.00
    $2.00
    Save up to 14% % Off
  • John Guest PI051623S Stem Adapter NPTF - 1/2 x 3/8 NPTF STEM ADAPTER Grey Acetal JOHN GUEST
    John Guest PI051623S Stem Adapter NPTF - 1/2 x 3/8 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 1 pc
    Save up to 14% % Off
    $2.00 - $18.00
    ($2.00 each)
    $3.99 - $20.99
    $3.99 - $20.99
    $3.99
    $2.00 - $18.00
    $2.00

    John Guest PI051623S Stem Adapter NPTF - 1/2 x 3/8 NPTF

    JOHN GUEST
    PI051623S

    John Guest PI051623S Stem Adapter NPTF - 1/2 x 3/8 NPTF Features: Push-fit technology ensures secure, reliable, and leak-free connections ...

    View full details
    $2.00 - $18.00
    ($2.00 each)
    $3.99 - $20.99
    $3.99 - $20.99
    $3.99
    $2.00 - $18.00
    $2.00
    Save up to 14% % Off
  • John Guest PI051223S Stem Adapter NPTF - 3/8 x 3/8 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 10-Pack
    John Guest PI051223S Stem Adapter NPTF - 3/8 x 3/8 NPTF stem adapter JOHN GUEST
    Save up to 20% % Off
    $1.25 - $11.20
    ($1.25 each)
    $2.99 - $13.99
    $2.99 - $13.99
    $2.99
    $1.25 - $11.20
    $1.25

    John Guest PI051223S Stem Adapter NPTF - 3/8 x 3/8 NPTF

    JOHN GUEST
    PI051223S

    John Guest PI051223S Stem Adapter NPTF - 3/8 x 3/8 NPTF Features: Advanced push-fit technology provides secure, reliable, and leak-free co...

    View full details
    $1.25 - $11.20
    ($1.25 each)
    $2.99 - $13.99
    $2.99 - $13.99
    $2.99
    $1.25 - $11.20
    $1.25
    Save up to 20% % Off
  • John Guest PI051222S Stem Adapter NPTF - 3/8 x 1/4 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 10 Pack
    John Guest PI051222S Stem Adapter NPTF - 3/8 x 1/4 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 1 Pack
    Save up to 20% % Off
    $1.89 - $15.99
    ($1.89 each)
    $2.39 - $19.99
    $2.39 - $19.99
    $2.39
    $1.89 - $15.99
    $1.89

    John Guest PI051222S Stem Adapter NPTF - 3/8 x 1/4 NPTF

    JOHN GUEST
    PI051222S

    John Guest PI051222S Stem Adapter NPTF - 3/8 x 1/4 NPTF Features: Push-fit technology ensures secure, reliable, and leak-free connections Stem inse...

    View full details
    $1.89 - $15.99
    ($1.89 each)
    $2.39 - $19.99
    $2.39 - $19.99
    $2.39
    $1.89 - $15.99
    $1.89
    Save up to 20% % Off
  • John Guest PI050822S Stem Adapter NPTF - 1/4 x 1/4 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 10-Pack
    John Guest PI050822S Stem Adapter NPTF - 1/4 x 1/4 NPTF stem adapter JOHN GUEST
    Save up to 39% % Off
    $1.12 - $9.80
    ($1.12 each)
    $1.99 - $15.99
    $1.99 - $15.99
    $1.99
    $1.12 - $9.80
    $1.12

    John Guest PI050822S Stem Adapter NPTF - 1/4 x 1/4 NPTF

    JOHN GUEST
    PI050822S

    John Guest PI050822S Stem Adapter NPTF - 1/4 x 1/4 NPTF Features: Push-fit technology delivers reliable, leak-free connections Easy stem insert...

    View full details
    $1.12 - $9.80
    ($1.12 each)
    $1.99 - $15.99
    $1.99 - $15.99
    $1.99
    $1.12 - $9.80
    $1.12
    Save up to 39% % Off
  • John Guest PI050821S Stem Adapter NPTF - 1/4 x 1/8 NPTF STEM ADAPTER Grey Acetal JOHN GUEST 10-Pack
    John Guest PI050821S Stem Adapter NPTF - 1/4 x 1/8 NPTF stem adapter JOHN GUEST
    Save up to 19% % Off
    $0.66 - $6.29
    ($0.66 each)
    $1.25 - $7.75
    $1.25 - $7.75
    $1.25
    $0.66 - $6.29
    $0.66

    John Guest PI050821S Stem Adapter NPTF - 1/4 x 1/8 NPTF

    JOHN GUEST
    PI050821S

    John Guest PI050821S Stem Adapter NPTF - 1/4 x 1/8 NPTF Features: Push-fit technology ensures secure, reliable, and leak-free connections Stem inse...

    View full details
    $0.66 - $6.29
    ($0.66 each)
    $1.25 - $7.75
    $1.25 - $7.75
    $1.25
    $0.66 - $6.29
    $0.66
    Save up to 19% % Off
  • John Guest PI201612S Reducing Union - 1/2" x 3/8" REDUCING UNION Grey Acetal JOHN GUEST 10-Pack
    John Guest PI201612S Reducing Union - 1/2" x 3/8" REDUCING UNION Grey Acetal JOHN GUEST 1-PC
    Save up to 20% % Off
    $4.69 - $39.99
    ($4.69 each)
    $6.89 - $49.99
    $6.89 - $49.99
    $6.89
    $4.69 - $39.99
    $4.69

    John Guest PI201612S Reducing Union - 1/2" x 3/8"

    JOHN GUEST
    PI201612S

    John Guest PI201612S Reducing Union - 1/2" x 3/8" Features: Push-fit technology provides fast, reliable, and leak-free connections Connects tub...

    View full details
    $4.69 - $39.99
    ($4.69 each)
    $6.89 - $49.99
    $6.89 - $49.99
    $6.89
    $4.69 - $39.99
    $4.69
    Save up to 20% % Off
  • John Guest PI201210S Reducing Union - 3/8 x 5/16 REDUCING UNION Grey Acetal JOHN GUEST 10 pack
    John Guest PI201210S Reducing Union - 3/8 x 5/16 REDUCING UNION Grey Acetal JOHN GUEST 1-PC
    Save up to 32% % Off
    $3.49 - $27.20
    ($3.49 each)
    $5.99 - $39.99
    $5.99 - $39.99
    $5.99
    $3.49 - $27.20
    $3.49

    John Guest PI201210S Reducing Union - 3/8 x 5/16

    JOHN GUEST
    PI201210S

    John Guest  PI201210S  Reducing Union - 3/8 x 5/16 Features: Push-fit technology ensures fast, reliable, and leak-free connections Connects tub...

    View full details
    $3.49 - $27.20
    ($3.49 each)
    $5.99 - $39.99
    $5.99 - $39.99
    $5.99
    $3.49 - $27.20
    $3.49
    Save up to 32% % Off
  • John Guest PI201208S Reducing Union - 3/8 x 1/4 REDUCING UNION Grey Acetal JOHN GUEST 10 Pack
    John Guest PI201208S Reducing Union - 3/8 x 1/4 REDUCING UNION Grey Acetal JOHN GUEST 1 Pack
    Save up to 10% % Off
    $2.98 - $26.99
    ($2.98 each)
    $3.98 - $29.99
    $3.98 - $29.99
    $3.98
    $2.98 - $26.99
    $2.98

    John Guest PI201208S Reducing Union - 3/8 x 1/4

    JOHN GUEST
    PI201208S

    John Guest PI201208S Reducing Union – 3/8" x 1/4" Brand: John Guest Fitting Type: Straight Reducing Connector Fitting Side A (Tube OD): 3/8" ...

    View full details
    $2.98 - $26.99
    ($2.98 each)
    $3.98 - $29.99
    $3.98 - $29.99
    $3.98
    $2.98 - $26.99
    $2.98
    Save up to 10% % Off
  • John Guest PI201008S Reducing Union - 5/16" x 1/4" REDUCING UNION Grey Acetal JOHN GUEST 10-Pack
    John Guest PI201008S Reducing Union - 5/16" x 1/4" REDUCING UNION Grey Acetal JOHN GUEST 1 -PC
    Save up to 12% % Off
    $2.80 - $22.00
    ($2.80 each)
    $4.75 - $24.99
    $4.75 - $24.99
    $4.75
    $2.80 - $22.00
    $2.80

    John Guest PI201008S Reducing Union - 5/16" x 1/4"

    JOHN GUEST
    PI201008S

    John Guest PI201008S Reducing Union - 5/16" x 1/4" Push-Fit Technology for reliable, leak-free connections Connects OD tubing of different size...

    View full details
    $2.80 - $22.00
    ($2.80 each)
    $4.75 - $24.99
    $4.75 - $24.99
    $4.75
    $2.80 - $22.00
    $2.80
    Save up to 12% % Off
  • John Guest PI0416S Union Connector - 1/2 UNION CONNECTOR Grey Acetal JOHN GUEST 10 Pack
    John Guest PI0416S Union Connector - 1/2 UNION CONNECTOR Grey Acetal JOHN GUEST 1 Pack
    Save up to 36% % Off
    $4.00 - $32.00
    ($4.00 each)
    $7.99 - $49.99
    $7.99 - $49.99
    $7.99
    $4.00 - $32.00
    $4.00

    John Guest PI0416S Union Connector - 1/2

    JOHN GUEST
    PI0416S

    John Guest PI0416S Union Connector - 1/2 Features & Benefits: Two 1/2" OD push-fit connections for easy tubing integration Constructed from...

    View full details
    $4.00 - $32.00
    ($4.00 each)
    $7.99 - $49.99
    $7.99 - $49.99
    $7.99
    $4.00 - $32.00
    $4.00
    Save up to 36% % Off