Gate valve 502

DN40-1200, PN6-100

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Comprehensive Documentation

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Technical Specifications

Nominal diameter DN 40-1200
Nominal pressure PN 6-1000
Medium temperature -196 °C ... +540 °C
Types of Valve End Connections Welded, Flanged, Socket
Leakage Class «А»
Warranty Period 12 months
Mounting Position Any, except for downward-driven devices
Types of Control — manual (lever)
— manual (handwheel)
— pneumatic actuation 
— electric actuation
Average Service Life 10 000 cycles
Guaranteed Service Life Not less than 5000 cycles

Technical Drawings and Dimensions

Nominal diameter PN16

Table of Basic Dimensions

DN, mm	D, mm	D1, mm	D2, mm	L, mm	b, mm	f, mm	n-ød, mm
50	165	125	102	250	16	3	4-18
65	135	145	122	270	18	3	4-18 / 8-18
80	200	160	138	280	20	3	8-18
100	220	180	158	300	20	3	8-18
125	250	210	188	325	22	3	8-18
150	285	240	212	350	24	3	8-22
200	340	295	268	400	26	3	12-22
250	405	355	320	450	30	3	12-26
300	460	410	378	500	30	4	12-26
350	520	470	438	550	31	4	16-26
400	580	525	490	600	36	4	16-30
450	640	585	550	650	40	4	20-30
500	715	650	610	700	44	4	20-33

Product Description

Wedge gate valve model 502 is designed for regulating and shutting off flow in installations where high tightness and durability are required.

Thanks to a wide selection of body materials and seals, the valves can be precisely adapted to various operating conditions, including contact with chemically aggressive media and operation at high temperatures. The reinforced, ribbed cover construction provides increased mechanical strength and operational stability even under extreme temperature conditions. The possibility to choose between solid and flexible wedges allows optimal adjustment of the valve to the specifics of the particular technological application.

Design features of the model:

Designed for high-pressure applications
Wide range of body materials, seals, and sealing inserts
Reinforced, ribbed cover — suitable for cryogenic and high-temperature conditions
Option for solid or flexible wedge (depending on operating conditions)

Working medium:

Non-aggressive liquids
(water, steam, mineral oils, glycols, low concentration salt solutions, e.g., NaCl)
Aggressive, corrosive or chemically active liquids
(sulfuric acid – H₂SO₄, hydrochloric acid – HCl, industrial wastewater, ammonia – aqueous or anhydrous)
Petroleum products and fuels
(crude oil, gasoline, oil, liquid fuels)
Technical and industrial gases
(hydrogen – H₂, hydrogen sulfide – H₂S, biogas)

Body materials:

🔹 Carbon steels

ASTM A216 WCB (1.0619, GP240GH)

🔹 Low-temperature carbon steels

A352LCB / A352LCC

🔹 Special-purpose alloy steels

ASTM A217 WC6 / WC9

🔹 Stainless steels (corrosion resistant)

ASTM A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
ASTM A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)
A351 CF3 (1.4306) / AISI 304L / A182 F304L
A351 CF3M (1.4409) / AISI 316L (1.4404)
AISI 316Ti (1.4571)
AISI 904L (1.4539)

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