A DIN 3202 F5 NRS Resilient Seated Gate Valve is a heavy-duty isolation valve designed according to German industrial standards. The "F5" designation refers to the Long Series face-to-face dimension, which provides a longer body compared to the "F4" version, often preferred in specific infrastructure projects for its robust build and ease of maintenance.
1. Key Technical Breakdown
DIN 3202 F5: This specifies the body length (Face-to-Face). Because it is the "Long Series" (EN 558 Series 15), it is easier to replace older metal-seated valves that used this same longer footprint.
NRS (Non-Rising Stem): The stem threads are internal. When you turn the handwheel, the wedge moves up or down, but the stem itself does not rise. This makes it perfect for buried service or installations with low overhead clearance.
Resilient Seated: The gate (wedge) is fully encapsulated in high-grade rubber (EPDM or NBR). This ensures a 100% leak-proof seal even if there are small solids or sand in the water.
Technical Attributes
1,Design Standard,DIN 3352-4 / EN 1074-1 & 2 / EN 1171
2,Face-to-Face Length,DIN 3202 F5 (Long Series) / EN 558 Series 15
3,Stem Type,NRS (Non-Rising Stem)
4,Pressure Class,PN10 / PN16 / PN25 (Standard: PN16)
5,Body Material,Ductile Iron GGG50 (EN-GJS-500-7)
6,Bonnet Material,Ductile Iron GGG50
7,Wedge Material,Ductile Iron + Full Elastomer Encapsulation
8,Resilient Seat Material,EPDM (Standard) or NBR (Optional)
9,Stem Material,Stainless Steel AISI 420 (Standard) / 304 / 316
10,Stem Nut,Brass (MS58) or Bronze
11,Coating,"Fusion Bonded Epoxy (FBE), Blue RAL 5005/5017"
12,Coating Thickness,≥ 250 Microns (Internal & External)
13,Sealing Type,Triple O-Ring (NRS Stem Seal)
14,Flow Configuration,"Full Bore (Straight through, no pocket)"
15,Flange Drilling,EN 1092-2 / DIN 2501
16,Test Pressure (Shell),"1.5×PN (e.g., 24 Bar for PN16)"
17,Test Pressure (Seat),"1.1×PN (e.g., 17.6 Bar for PN16)"
18,Operation,"Handwheel, Square Nut, or Extension Spindle"
19,Temperature Range,−10°C to +80°C
20,Medium,"Potable water, Neutral liquids, Sewage"
21,Drive Interface,ISO 5211 (Optional for Actuator mounting)
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
