Supporting the nation's essential services - Read our COVID-19 statement

Fig 500F High Lift Safety Valve

Buy Online Price from £312.60 (ex vat)

The NABIC 500F is ideal for use on unvented hot water heating systems, where a high capacity, emergency steam relief capability is required.

All wetted parts are manufactured from dezincification resistance materials. Designed and tested to BS EN ISO 4126 -1.

High degree of seat tightness
Diaphragm protected parts

Pressure Equipment Directive - PED 2014/68/EU

Product Features -
Downloads +
Discharge Capabilities +
Buy Online +

Product Features +

Medium: Hot water, steam, compressed air and inert gasses, Co2 (to 20°C), ethylene glycol, potable water

Size Range: DN20 - DN65

Pressure: 0.4 - 12.5 bar

Material: Gunmetal

Temperature: -20 to 195°C

Connection: Flanged inlet & screwed outlet

Pipe Connections

Flanged inlet connections size DN20 upwards. Threaded outlet connections, Rp parallel to BS EN 10226-1. Most flange standards can be accommodated.

Testing

All valves are shell and seat tested (to confirm set pressure) before leaving the factory and all valves are supplied pre-set with a tamper proof seal. Pressure Test Certificate and Letters of Conformity available on request.

Product Extras

Available with Viton seat design
Padlock available. (complies with M&E3)
Pressure setting locked and sealed
Drain plug fitted on DN32 and above allows fitting of a pressure gauge

Materials

Ref No	Name of Part	Material
1	Thrust Washer	Brass, BS EN 12164 CW609N
2	Grubscrew	Steel
3	Test Lever	Brass, BS EN 1982 CC754S
4	Spring	Chrome Vandium Alloy Steel, BS 2803 735 A50 HS (Stainless Steel, BS 2056 302S26 Opt)
5	Label	Yellow kapton
6	Spring Cover	Bronze, BS EN 1982 CC491K
7	Piston	Brass, BS EN 12164 CW609N
8	Diaphragm	Silicon Rubber
9	Seat Seal Holder	Bronze, BS EN 1982 CC491K / Brass BS EN 12164 CW602N (DZR)
10	Seat Seal	PTFE (Viton Opt)
11	Starlock Washer	Stainless Steel
12	Body	Bronze, BS EN 1982 CC491K
13	Lever Pin	Steel
14	Lead Seal (Not shown)	Lead
15	Adjusting Screw	Brass, BS EN 12164 CW609N
16	Spring Plate	Brass, BS EN 12164 CW609N
17	Spindle	Brass, BS EN 12164 CW721R
18	Seat Seal Retaining Plate	Bronze, BS EN 1982 CC491K / Brass BS EN 12164 CW602N (DZR)
19	O-Ring	Viton

Dimensional Drawing

Dimensions & Weights

SIZE DN	Inlet	Rp BSP Outlet	A (mm)	B (mm)	C (mm)	Weight (Kg)
20	Flanged	1"	39	52	162	1.70
25	Flanged	1 1/4"	45	60	185	2.45
32	Flanged	1 1/2"	54	64	231	3.87
40	Flanged	2"	64	73	273	4.60
50	Flanged	2 1/2"	76	83	303	10.10
65	Flanged	3"	90	96	366	15.00

Downloads +

Discharge Capabilities +

Buy Online +

Online ordering is only available in the UK and Northern Ireland
Customers can only order up to 5 of any one product line. For larger orders please call us on 01462 443 278
Please note: if ordering a stock product with a longer lead time product (e.g. 7 to 10 days or 3 to 4 weeks) they will be sent as a combined shipment when ready, unless purchased as separate orders.

View Delivery, Returns & Refund Details

Part Number	Size	Ex Vat	Stock Status	More
N-500F-020	DN20	£ 312.60	7 - 10 days	+
3/4" Flanged Inlet x 1" BSPP Female Outlet to BS21 - PTFE to Metal Seat
N-500F-025	DN25	£ 380.10	7 - 10 days	+
1" Flanged Inlet x 1.1/4" BSPP Female Outlet to BS21 - PTFE to Metal Seat
N-500F-032	DN32	£ 511.34	7 - 10 days	+
1.1/4" Flanged Inlet x 1.1/2" BSPP Female Outlet to BS21 - PTFE to Metal Seat
N-500F-040	DN40	£ 679.96	7 - 10 days	+
1.1/2" Flanged Inlet x 2" BSPP Female Outlet to BS21 - PTFE to Metal Seat
N-500F-050	DN50	£ 974.34	7 - 10 days	+
2" Flanged Inlet x 2.1/2" BSPP Female Outlet to BS21 - PTFE to Metal Seat
N-500F-065	DN65	£ 1,289.12	7 - 10 days	+
2.1/2" Flanged Inlet x 3" BSPP Female Outlet to BS21 - PTFE to Metal Seat

Set Required Pressure

Please type your required set pressure from 0.4 to 12.5. Pressure settings can be in 0.1 increments.
Please check set pressure charts on Discharge Capabilities section.

Fig 500F Fluids

Test Certificate Test certificates are included free of charge for this product

Price £312.60

You must select a value for all options provided.

Quantity

The reason I went to NABIC was because we have to meet certain water regulations. After a chat with Northumbrian Water, they suggested looking into NABIC products as they are WRAS approved and suitable to use on all potable water applications.

I went direct and bought 4 pipe interrupters with next day delivery, which have been installed in our on-site laboratory. My user experience was great and I liked the fact that site has all the necessary specifications and prices easily to hand.

Peter Bauckham - Managing Director, Argos Inspection

Fig 500F High Lift Safety Valve

Fig 500F High Lift Safety Valve

What our customers say