The key number refers to the number on the schematic above.

Key # - Item Name	Item #	Price	Qty
1 - Filter Locknut Assembly view picture	550-7500	$61.64	QTY
2 - Lid O-Ring	805-0460	$15.26	QTY
3 - Lid Handle view picture	519-7601	$9.74	QTY
3a - #12 x 3/4" SS Phillips Head Screw view picture	819-9002	$0.59	QTY
4 - Pressure Gauge view picture	830-4000SS	$21.50	QTY
4a - O-Ring - Gauge	805-0136	$0.81	QTY
4b - Gauge - Fitting Adapter view picture	519-7431	$7.74	QTY
4c - O-Ring - Adapter view picture	805-0116EP	$2.69	QTY
5 - Air Relief Plug with O-Ring Replaces 600-0200 view picture	600-0200	$5.92	QTY
5a - O-Ring - Air Relief	805-0207	$2.43	QTY
Lid Assembly (Small)	519-7410	$146.67	QTY
6 - Lid Assembly (Large)	519-7407	$161.15	QTY
7 - Gauge Lock-Nut view picture	519-7441	$14.72	QTY
8 - Filter Cartridge - 75 sq. ft - 17-3/8" Long Replaces 817-0075P view picture	55897	$64.25	QTY
8 - Filter Cartridge - 100 sq. ft.- 17-3/8" Long Replaces 817-0100P view picture	4792	$63.89	QTY
8 - Filter Cartridge - 125 sq. ft. - 23-3/8" Long Replaces 817-0125N view picture	4794	$80.30	QTY
8 - Filter Cartridge - 150 sq. ft. - 23-3/8" Long Replaces 817-0150N view picture	60977	$95.18	QTY
8 - Filter Cartridge - 200 sq. ft. - 23-3/8" Long Replaces 817-0200N	60978	$138.20	QTY
9 - Filter Body	515-7250	$343.49	QTY
10 - Coupling view picture	419-7241	$13.96	QTY
11 - Base Fasteners (4 required) view picture	429-7221	$1.74	QTY
12 - ClearWater II Base view picture	672-7401	$107.16	QTY
13 - O-Ring view picture	805-0224	$2.42	QTY
15 - O-Ring view picture	805-0224	$2.42	QTY
16 - Drain Assembly - Complete view picture	500-5300	$8.18	QTY
16 - Drain Cap Assembly w/ Gasket view picture	505-2030	$7.34	QTY

  The key number refers to the number on the schematic above.