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INSTALLATION, OPERATION
&
MAINTENANCE INSTRUCTIONS
1455 Kleppe Lane Sparks, NV 89431-6467 (775) 359-4712 Fax (775) 359-7424
E-mail: haws@hawsco.com website: www.hawsco.com
NOTE TO INSTALLER: Please leave this information with the Maintenance Department.
HAWS® warrants that all of its products are guaranteed against defective material or poor
workmanship for a period of one year from date of shipment. HAWS liability under this
warranty shall be discharged by furnishing without charge F.O.B. HAWS Factory any goods,
or part thereof, which shall appear to the Company upon inspection to be of defective
material or not of first class workmanship, provided that claim is made in writing to company
within a reasonable period after receipt of the product. Where claims for defects are made,
the defective part or parts shall be delivered to the Company, prepaid, for inspection. HAWS
will not be liable for the cost of repairs, alterations or replacements, or for any expense
connected therewith made by the owner or his agents, except upon written authority from
HAWS, Sparks, Nevada. HAWS will not be liable for any damages caused by defective
materials or poor workmanship, except for replacements, as provided above. Buyer agrees
that Haws has made no other warranties either expressed or implied in addition to those
above stated, except that of title with respect to any of the products or equipment sold
hereunder and that HAWS shall not be liable for general, special, or consequential damages
claimed to arise under the contract of sale.
The emergency equipment manufactured by HAWS is warranted to function if installation
and maintenance instructions provided are adhered to. The units also must be used for the
purpose, which they were intended. This product is intended to supplement first-aid
treatment. Due to widely varying conditions HAWS cannot guarantee that the use of this
emergency equipment will prevent serious injury or the aggravation of existing or prior
injuries.
NO OTHER WARRANTIES EXPRESSED OR IMPLIED ARE AUTHORIZED,
PROVIDED OR GIVEN BY HAWS.
SHOULD YOU EXPERIENCE DIFFICULTY WITH THE INSTALLATION OF THIS
MODEL PLEASE CALL:
TECHNICAL SUPPORT: 1-800-766-5612
FOR CUSTOMER SERVICE: 1-888-640-4297
Model MK81A
Freeze Proof Valve
LIMITED WARRANTY
No. 2080289(10)
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SUPPLY LINE: The minimum recommended line size is 1-1/4” IPS with 30-90 psi (2-6 ATM)
pressure. Where sediment or mineral content is a problem, an inlet filter is recommended.
PLUMBING CONNECTIONS: Inlet supply is female 1-1/4" NPT.
INSTALLATION: A minimum of 5.0 cubic feet of porous gravel fill around check valve. Flush
line before attaching valve.
TROUBLESHOOTING
PROBLEM
1. Low flow/valve won't shut off. 1.
2. Valve won't shut off. 2. a. Check to see if stem seats on valve.
b. Check to see if stem packing is
c. High water pressure. Shim spring to
3. Valve leaks/won't shut off. 3. Remove valve stem, check O-ring and
REPAIR CHECKLIST
Remove valve stem, check for debris.
Clean valve and flush line.
There should be clearance between
flag and top valve nut in closed
position. Adjust if necessary.
excessive. Excessive pressure will not
allow spring to counter water pressure.
Adjust as needed.
counter water pressure.
rubber washer for damage. Replace as
needed using VRKMK81A repair kit.
For more information about Haws products, see our website: www.hawsco.com
© 2010 Haws
HAWS
®
®
Corporation – All Rights Reserved
and other trademarks used in these materials are the exclusive property of Haws Corporation.
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