BVM

GUN METAL SAFTY VALVE

Specification & Features:
Straight Pattern, Open Discharge,
Screwed Male Threads at Inlet to BS 21.
Angle Pattern, Enclosed Discharge, Screwed Male Threads
at Inlet and Screwed Female Ends at Outlet to BS 21.
These Valves start opening at the set pressure & open in
direct proportion to the increase, in order of set pressure.
These should be installed nearer to the pressure vessel they
protect. When installed, they should be one size smaller
than the pipeline size.

Forged Steel Check Valve CODE # GM-510

Forged Steel Check Valve CODE # GM-511

Materials of Construction:

S.No.	NAME OF PART	MATERIAL	STANDARD
1. 2. 3. 4. 5. 6. 7. 8.	Adjusting Screw Locking Nut Spring Chamber Spring Disc Spring Stem Disc Body	Bronze Brass Bronze Bronze Carbon Steel HT Brass Bronze Bronze	BS: 1982 CC491K BS: EN 12165 Gr. W617N BS: 1982 CC491K BS: 1982 CC491K EN 44 BS: 1982 CC491K BS: 1982 CC491K

TESTING:
Each Safety / Relief Valve is tested for Body and Seat Tightness at 300 Psig (Hyd.)

Sizes / Dimensions:

Sizes		Dimensions (mm)
Inches.	mm	H	L
1/2"	15	148	38
3/4"	20	160	39
1"	25	178	48
1.1/4"	32	180	50
1.1/2"	40	210	59
2"	50	255	59

Setting : The Safety / Relief Valve is normally pre-set at 5 Bar but is adjustable from 2 Bar to 10 Bar. To set the pressure, connect the male inlet end of the valve to the supply system which is fitted with a pressure gauge. Unscrew the locking Nut. Set the Adjusting Screw with a spanner by turning clockwise to increase the

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G.M. SAFETY VALWES / RELIEF VALVE

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