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WILKINS 975 3/4-1" RELIEF VALVE UPPER PLUNGER

WKNS 975 3/4-1" RV UPR PLUNGER #972-34

Zurn

SKU:
972-34
UPC:
612052060767
Availability:
Items in stock ship same day if ordered by 3:30pm PST, Monday-Friday.
Model Series:
975 3/4" - 2"
Model Group:
975 3/4" - 2"
Model Size:
.75:3/4"
Model Series:
975 / XL / XL2 1/4" - 2"
Model Group:
975 XL / XL2 1/4" - 2"
Model Size:
1:1"
Spec Sheet:
Manufacturer Spec Sheet
Spec Sheet:
Manufacturer Spec Sheet 2
Packing Slip Description:
WKNS 975 3/4-1" RV UPR PLUNGER
PDP Heading:
WILKINS 975 3/4-1" RELIEF VALVE UPPER PLUNGER
Catalog Product Description:
RV Upper Plunger
Breakdown:
Repair Guide
Resources Ref Manual:
Reference Manual
Resources Repair Info:
Repair Info

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WILKINS 975 3/4-1" RELIEF VALVE UPPER PLUNGER

UPR PLNGR, 3/4" XL

Model Overview

This is a reduced pressure assembly. Production began in 1990. Starting in 2004 in sizes 3/8" and 1/2" a stainless steel body assembly was produced. The checks are similar to the one used in the 950 design. The 3/4"-2" size is a wye pattern poppet style check design with the disc holders made of a glass filled noryl. The relief valve has an internal relief valve sensing line. The body is constructed of bronze. In 2010 a 975XL2 was introduced which is made of lead free bronze. There are three versions of check seats available. The 975 version was discontinued in 1992 and had a non-replaceable check seat. The model 975A was discontinued in 1992 and had a replaceable bronze check seat. The model 975XL began production in 1993 and had a replaceable check seat made of glass filled noryl. A seat removal tool was needed to change the seats. The check discs in the 975XL were changed to silicon rubber. In 2001 the 975XL was made available with a stainless steel body in sizes 3/8"-1/2". The relief valve seat is replaceable. Checks and relief springs are not contained when the covers are removed.

Model Series:
975 3/4" - 2"
Model Series:
975 / XL / XL2 1/4" - 2"
Packing Slip Description:
WKNS 975 3/4-1" RV UPR PLUNGER
UPC:
612052060767
Brand:
Zurn

Reference Manual

Repair Info

Model Group:
975 3/4" - 2"
Model Size:
.75:3/4"
Model Group:
975 XL / XL2 1/4" - 2"
Model Size:
1:1"