Series 434, Steel Body - Diaphragm Operated Two-way

DESCRIPTION

The INVALCO Series 434 Valve can be used in any application that requires a steel bodied flanged valve. This could include high or low pressure separators, treaters, dehydrators, or any other pressure vessel.

The Series 434 is perfect for use on offshore vessels.

Specifications

Body Material	Steel WCB
End Connections	2” Flanges
Body Cover	Carbon Steel, Union
Diaphragm Opera	Carbon Steel, 65 sq. in. Nylon Reinforced Buna N Diaphragm, Maximum Recommended Operating Pressure 70 psi Maximum Recommended Operating Pressure 70 psiMaximum Containment Pressure 100 psi
Packing	Non-Lubricated Buna N
Maximum Working Pressure	Limited by Flange
Temperature Limits	-20°F to 250°F
Stem Material	303 Stainless Steel
Plug and Seat Material	See Schedule In PDF(page 2)

FEATURES

Hammer Union Construction - Reduced downtime for repair.
Quick Change Trim - Reduced cost for repair.
Steel Bodies - Meets all application requirements.
Nace Adaptable - Can be modified for use in sour service.

ADDITIONAL INFORMATION

Note: Dimensions -- Inches to the nearest tenth (millimeters to the nearest whole mm), each independently dimensioned from respective engineering drawings.

Files area

Series 434, Steel Body Manual

Explanation of Model # System

Images related to this product(parts)

Enlarge

Dimensions - Inches (mm)

Enlarge

Dimensions - Inches (mm)

Enlarge

Parts

Enlarge

Parts

Check	Part #	Description	Comments	Qty
	80008230	DFG-202-434 - 1/4" - 416 S.S.*
	80008231	DFG-202-434 - 1/4" - Carbide
	80008235	DFG-202-434 - 3/8" - 416 S.S.*
	80008236	DFG-202-434 - 3/8" - Carbide
	80008240	DFG-202-434 - 1/2" - 416 S.S.*
	80008241	DFG-202-434 - 1/2" - Carbide
	80003809	DFG-202-434 - 3/4" - 416 S.S.*
	80008250	DFG-202-434 - 3/4" - Carbide
	80008253	DFG-202-434 - 1" - 416 S.S.*
	80008254	DFG-207-434 - 1/4" - 416 S.S.*
	80008255	DFG-207-434 - 1/4" - Carbide
	80008259	DFG-207-434 - 3/8" - 416 S.S.*
	80008260	DFG-207-434 - 3/8" - Carbide
	80008264	DFG-207-434 - 1/2" - 416 S.S.*
	80008265	DFG-207-434 - 1/2" - Carbide
	80008274	DFG-207-434 - 3/4" - 416 S.S.*
	80008275	DFG-207-434 - 3/4" - Carbide
	80008278	DFG-207-434 - 1" - 416 S.S.*
	80008279	DFG-214-434 - 1/4" - 416 S.S.*
	80003810	DFG-214-434 - 1/4" - Carbide
	80008283	DFG-214-434 - 3/8" - 416 S.S.*
	80003812	DFG-214-434 - 3/8" - Carbide
	80008287	DFG-214-434 - 1/2" - 416 S.S.*
	80008288	DFG-214-434 - 1/2" - Carbide
	80008297	DFG-214-434 - 3/4" - 416 S.S.*
	80008298	DFG-214-434 - 3/4" - Carbide
	80008301	DFG-214-434 - 1" - 416 S.S.*
	80008302	DFG-214R-434 - 1/4" - 416 S.S.*
	80008303	DFG-214R-434 - 1/4" - Carbide
	80008307	DFG-214R-434 - 3/8" - 416 S.S.*
	80003811	DFG-214R-434 - 3/8" - Carbide
	80008311	DFG-214R-434 - 1/2" - 416 S.S.*
	80008312	DFG-214R-434 - 1/2" - Carbide
	80008320	DFG-214R-434 - 3/4" - 416 S.S.*
	80008321	DFG-214R-434 - 3/4" - Carbide
	80008324	DFG-214R-434 - 1" - 416 S.S.*
	80008325	DFG-236R-434 - 1/4" - 416 S.S.*
	80008326	DFG-236R-434 - 1/4" - Carbide
	80008330	DFG-236R-434 - 3/8" - 416 S.S.*
	80008331	DFG-236R-434 - 3/8" - Carbide
	80008335	DFG-236R-434 - 1/2" - 416 S.S.*
	80008336	DFG-236R-434 - 1/2" - Carbide
	80008345	DFG-236R-434 - 3/4" - 416 S.S.*
	80008346	DFG-236R-434 - 3/4" - Carbide
	80008349	DFG-236R-434 - 1" - 416 S.S.*
	80007971	DFA-202-434 - 1/4" - 416 S.S.*
	80007972	DFA-202-434 - 1/4" - Carbide
	80007976	DFA-202-434 - 3/8" - 416 S.S.*
	80007977	DFA-202-434 - 3/8" - Carbide
	80008081	DFA-202-434 - 1/2" - 416 S.S.*
	80007982	DFA-202-434 - 1/2" - Carbide
	80003710	DFA-202-434 - 3/4" - 416 S.S.*
	80007990	DFA-202-434 - 3/4" - Carbide
	80007993	DFA-202-434 - 1" - 416 S.S.*
	80007994	DFA-207-434 - 1/4" - 416 S.S.*
	80007995	DFA-207-434 - 1/4" - Carbide
	80007999	DFA-207-434 - 3/8" - 416 S.S.*
	80003712	DFA-207-434 - 3/8" - Carbide
	80008003	DFA-207-434 - 1/2" - 416 S.S.*
	80008004	DFA-207-434 - 1/2" - Carbide
	80003711	DFA-207-434 - 3/4" - 416 S.S.*
	80008013	DFA-207-434 - 3/4" - Carbide
	80008016	DFA-207-434 - 1" - 416 S.S.*
	80008017	DFA-214-434 - 1/4" - 416 S.S.*
	80008018	DFA-214-434 - 1/4" - Carbide
	80008022	DFA-214-434 - 3/8" - 416 S.S.*
	80003713	DFA-214-434 - 3/8" - Carbide
	80008026	DFA-214-434 - 1/2" - 416 S.S.*
	80008027	DFA-214-434 - 1/2" - Carbide
	80003714	DFA-214-434 - 3/4" - 416 S.S.*
	80008036	DFA-214-434 - 3/4" - Carbide
	80008039	DFA-214-434 - 1" - 416 S.S.*
	80008040	DFA-214R-434 - 1/4" - 416 S.S.*
	80003716	DFA-214R-434 - 1/4" - Carbide
	80008044	DFA-214R-434 - 3/8" - 416 S.S.*
	80003718	DFA-214R-434 - 3/8" - Carbide
	80008048	DFA-214R-434 - 1/2" - 416 S.S.*
	80008049	DFA-214R-434 - 1/2" - Carbide
	80008057	DFA-214R-434 - 3/4" - 416 S.S.*
	80008058	DFA-214R-434 - 3/4" - Carbide
	80008061	DFA-214R-434 - 1" - 416 S.S.*

Check	Part #	Description	Comments	Qty
	65000525	Screw 1/2-13x3 SQHSS
	65008551	Nut 1/2-13 Hex Jam
	45001858	Upper Spring Rest
	45002612	1/4" Bleeder Filter
	65001401	Nut 3/8-24 Flexloc
	45002776	Upper Diaphragm Plate
	67101725	O-Ring BUN-011-90
	45003460	Diaphragm
	45001789	Lower Diaphragm Plate
	45008406	Spring
	45004223	Sight Glass
	65003440	Screw 3/8-16x7/8 HHCS
	48004020	Upper Diaphragm Case
	45003129	Bushing
	45004315	Spring
	45003502	Travel Indicator
	48003459	Lower Diaphragm Case
	65001966	Nut 3/8-16 Hex
	67101263	O-Ring BUN-210-90
	67101299	O-Ring BUN-225-90