logo-art-240x160.jpgYour small, hometown-attitude company
Keith Specialty Store
6791 Rt 119 Hwy N,  Marion Center, PA 15759
US callers: 800-705-8838
FAX: 724-397-2228
Outside the US: 724-397-8838
8:00am-6:00pm  M-F, 8:00am-3:00pm Sat. (ET)


Latest Customer Review: May 20, 2020: (Armstrong 57W79 (old 45695-004) pressure switch) I could not find the part I was looking for at any of the local HVAC stores. One quick online search brought me to Keith's and using the website made it extremely easy to find the part. I called the store and they were very helpful. I got the part from Keith's delivered to my house before I could get a call back from one of the stores on whether not the part was available for me to order. I will use this store for all future purchases. Good work! Eric


COVID-19 Update: (May 6, 2020) We are now allowing walk-in customers. Please wear your mask! You may also have your order shipped to you by placing your order here. God bless and stay well!


Qest Compression Fittings

Qest compression fittings  by Zurn can be used to connect gray polybutylene, PEX, CPVC or copper tubing in any combination.  These are one of the few fittings that can be used with gray polybutylene plastic tubing.  Polybutylene was often used in manufactured homes.

Fitting sizes listed are for the inside diameter of the tubing.  IE: The 1/2 Qest coupling is for 1/2 inside diameter tubing which is 5/8 outside diameter.

  • 18-109.jpg
    Qest 3/8 compression coupling sku: 18-108, ($8.10) Qest 1/2 compression coupling sku: 18-109, ($9.20) Qest 3/4 compression coupling sku: 18-110, ($13.52) Qest 1 compression coupling sku: 18-111, ($17.20)
  • 18-134.jpg
    Qest 3/8 x 1/4 compression coupling sku: 18-130, ($8.10) Qest 1/2 x 1/4 compression coupling sku: 18-131, ($8.66) Qest 1/2 x 3/8 compression coupling sku: 18-132, ($8.66) Qest 3/4 x 1/2 compression coupling sku: 18-134, ($12.88)
  • Qest 3/4 compression x male adapter, NOT lead free-heating only sku: 18-101, ($17.00) Qest 1 compression x male adapter, NOT lead free-heating only sku: 18-102, ($22.00)
  • 18-105.jpg
    Qest 1/2 compression x female adap sku: 18-105, ($7.92) Qest 3/4 compression x female adapter sku: 18-106, ($11.04)
  • 18-115.jpg
    Qest 3/8 compression 90 ell sku: 18-114, ($9.57) Qest 1/2 compression 90 ell sku: 18-115, ($11.23) Qest 3/4 compression 90 ell sku: 18-116, ($17.20) Qest 1 compression 90 ell sku: 18-117, ($21.62)
  • 18-120.jpg
    Qest 3/8 compression tee sku: 18-119, ($9.79) Qest 1/2 compression tee sku: 18-120, ($12.88) Qest 3/4 compression tee sku: 18-121, ($19.50)
  • 18-122.jpg
    Qty:
  • 18-150.jpg
    Qest 1/2 compression valve sku: 18-150, ($27.97) Qest 3/4 compression valve sku: 18-151, ($27.88)
  • 18-174.jpg
    Qest 1/4 nut assembly sku: 18-170, ($3.87) Qest 3/8 nut assembly sku: 18-171, ($4.51) Qest 1/2 nut assembly sku: 18-172, ($4.56) Qest 3/4 nut assembly sku: 18-173, ($6.16) Qest 1 nut assembly sku: 18-174, ($6.88)
  • 50-pex-crimpxpolybutylene
    1/2 PEX crimp x Polybutylene adapter with rings, lead free sku: 62-34F, ($1.86) 3/4 PEX crimp x Polybutylene adapter with rings, lead free sku: 62-34G, ($2.68)